---
title: "Claude Opus 5.5 vs DeepSeek V4.1 Flash — Claude Opus 5.5 scores higher, DeepSeek V4.1 Flash costs less · Undominated.ai"
canonical: https://undominated.ai/compare/anthropic__claude-opus-5.5--vs--deepseek__deepseek-v4.1-flash/
description: "LMArena general score: Claude Opus 5.5 1515.5 ±7.5, DeepSeek V4.1 Flash 1462.5 ±6.3. On a balanced workload (3 tokens in per 1 out), Claude Opus 5.5 costs $8.00 and DeepSeek V4.1 Flash $0.182 (price under confirmation since 2026-10-12) per 1M tokens. Neither is both better and cheaper."
---

# Claude Opus 5.5 vs DeepSeek V4.1 Flash — Claude Opus 5.5 scores higher, DeepSeek V4.1 Flash costs less · Undominated.ai

> LMArena general score: Claude Opus 5.5 1515.5 ±7.5, DeepSeek V4.1 Flash 1462.5 ±6.3. On a balanced workload (3 tokens in per 1 out), Claude Opus 5.5 costs $8.00 and DeepSeek V4.1 Flash $0.182 (price under confirmation since 2026-10-12) per 1M tokens. Neither is both better and cheaper.

Model comparison · accepted catalogue facts 2026-10-21

# Claude Opus 5.5 vs DeepSeek V4.1 Flash

Neither model has both an equal-or-higher measured score and an equal-or-lower estimated price in this pair. Retaining your current model is a valid outcome.

Editorial comparison: Flagship capability vs high-speed tier: Claude Opus 5.5 (Anthropic) vs DeepSeek V4.1 Flash (DeepSeek) Inclusion does not recommend either model.

 [Technical deep dive](#deep-dive-heading)[Interactive decision workspace](#workspace)[All published comparisons](https://undominated.ai/compare/#catalogue-heading)
 [Claude Opus 5.5](https://undominated.ai/models/anthropic__claude-opus-5.5/)

LMArena general · Elo · higher is better

Scale starts at 1040 Elo

 **

1515.5

Balanced effective USD / 1M tokens · lower is better

 **

$8.00/M

 [DeepSeek V4.1 Flash](https://undominated.ai/models/deepseek__deepseek-v4.1-flash/)

LMArena general · Elo · higher is better

Scale starts at 1040 Elo

 **

1462.5

Balanced effective USD / 1M tokens · lower is better

 **

$0.182/M

 Price under confirmation since Oct 12, 2026

In-Depth Analysis

## Claude Opus 5.5 vs DeepSeek V4.1 Flash: Measured Technical Breakdown

Comprehensive comparison across measured human-preference evaluation, effective production token costs, architectural limits, and migration trade-offs.

 Measured Capability (LMArena) **Claude Opus 5.5** leads by **53.0 Elo**

Claude Opus 5.5: **1515.5** ±7.52 · DeepSeek V4.1 Flash: **1462.5** ±6.29 Statistically significant preference separation

### Cost Comparison Across Canonical Production Workloads

Rates represent effective cost per 1M tokens under standard token blends. Cached prompt reads are factored according to workload context reuse.

| Workload & Ratio | Claude Opus 5.5 | DeepSeek V4.1 Flash | Cost Difference | Advantage |
| --- | --- | --- | --- | --- |
| Balanced 3 tokens in per 1 out | $8.00 /1M tokens | $0.182 /1M tokens | $7.82 (98% diff) | DeepSeek V4.1 Flash costs less |
| Summarise Huge input, tiny output | $3.72 /1M tokens | $0.067 /1M tokens | $3.65 (98% diff) | DeepSeek V4.1 Flash costs less |
| Chat Long cached system prompt | $9.26 /1M tokens | $0.247 /1M tokens | $9.01 (97% diff) | DeepSeek V4.1 Flash costs less |
| Code gen Output dominates | $13.30 /1M tokens | $0.360 /1M tokens | $12.94 (97% diff) | DeepSeek V4.1 Flash costs less |
| Agentic Context replayed each turn | $4.14 /1M tokens | $0.105 /1M tokens | $4.03 (97% diff) | DeepSeek V4.1 Flash costs less |

### Architectural & Operational Specifications

| Specification | Claude Opus 5.5 | DeepSeek V4.1 Flash | Operational Note |
| --- | --- | --- | --- |
| Context window | 1,000,000 tokens | 1,048,576 tokens | — |
| Max output generation | 128,000 tokens | 943,718 tokens | DeepSeek V4.1 Flash allows longer single-turn completions |
| Base input price | $4.00 / 1M tokens | $0.053 / 1M tokens | DeepSeek V4.1 Flash input rate is cheaper |
| Base output price | $20.00 / 1M tokens | $0.570 / 1M tokens | DeepSeek V4.1 Flash output rate is cheaper |
| Cached input price | $0.200 / 1M tokens | $0.010 / 1M tokens | DeepSeek V4.1 Flash offers lower cached prompt cost |
| Reasoning & thinking tokens | Supported; standard rates | Supported; standard rates | — |
| Input modalities | text, image, file | text, image | — |
| Tool calling / function use | Supported | Supported | — |
| Open weights & licence | Proprietary (API-only) | Proprietary (API-only) | DeepSeek V4.1 Flash allows independent hosting or local deployment |
| Provider & reseller market | Anthropic · 11 provider offers | DeepSeek · 31 provider offers (11.19× spread) | — |

#### When to Choose Claude Opus 5.5

 - Higher measured general capability (1515.5 Elo on human evaluation).
 - Broader multimodal input support: text, image, file.
 - Direct integration with Anthropic tooling and API features.
 Risks when moving from DeepSeek V4.1 Flash → Claude Opus 5.5: - Context window: 1,048,576 → 1,000,000 tokens.
- Output limit: 943,718 → 128,000 tokens.

#### When to Choose DeepSeek V4.1 Flash

 - Larger context window (1,048,576 tokens) for long-document or repo-level context.
 - Higher maximum completion limit (943,718 tokens).
 - Direct integration with DeepSeek tooling and API features.
 Risks when moving from Claude Opus 5.5 → DeepSeek V4.1 Flash: - file input is not supported by the candidate.

### Detailed Evidence Passports & Independent Audits

 [Claude Opus 5.5 Full model card, pricing ladder & provider offers →](https://undominated.ai/models/anthropic__claude-opus-5.5/) [DeepSeek V4.1 Flash Full model card, pricing ladder & provider offers →](https://undominated.ai/models/deepseek__deepseek-v4.1-flash/) [Alternatives to Claude Opus 5.5 Better-and-cheaper dominance audit →](https://undominated.ai/check/anthropic__claude-opus-5.5/) [Alternatives to DeepSeek V4.1 Flash Better-and-cheaper dominance audit →](https://undominated.ai/check/deepseek__deepseek-v4.1-flash/)

Compare · model decision

## Choose two or three models

Inspect the differences, estimate your workload and keep the evidence. All standard catalogue models are available, including unrated ones.

Catalogue facts **2026-10-21**

 A · Current or starting model Choose a model Aion 3.5 · Aion Labs · unrated Aion 3.5 Mini · Aion Labs · unrated Aion-2.0 · Aion Labs · unrated Aion-3.0 · Aion Labs · unrated Aion-3.0-Mini · Aion Labs · unrated Aion-RP 1.0 (8B) · Aion Labs · unrated Auto Router · OpenRouter · unrated Auto Router (Beta) · OpenRouter · unrated Beam 1.0 501B A23B · Reflection · unrated Body Builder (beta) · OpenRouter · unrated Claude Fable 5 · Anthropic Claude Fable 5.1 · Anthropic Claude Haiku 4.5 · Anthropic Claude Haiku 5.5 · Anthropic · unrated Claude Opus 4.1 · Anthropic Claude Opus 4.5 · Anthropic Claude Opus 4.6 · Anthropic Claude Opus 4.7 · Anthropic Claude Opus 4.8 · Anthropic Claude Opus 5 · Anthropic Claude Opus 5.5 · Anthropic Claude Sonnet 4.5 · Anthropic Claude Sonnet 4.6 · Anthropic Claude Sonnet 5 · Anthropic Claude Sonnet 5.5 · Anthropic Codestral 2508 · Mistral · unrated Command A · Cohere · unrated Command A+ · Cohere · unrated Command R (08-2024) · Cohere Command R+ (08-2024) · Cohere Command R7B (12-2024) · Cohere · unrated Cydonia 24B V4.1 · Thedrummer · unrated DeepSeek V3 · DeepSeek DeepSeek V3 0324 · DeepSeek DeepSeek V3.1 · DeepSeek DeepSeek V3.1 Terminus · DeepSeek DeepSeek V3.2 · DeepSeek DeepSeek V3.2 Exp · DeepSeek DeepSeek V4 Flash 0423 · DeepSeek DeepSeek V4 Flash 0731 · DeepSeek · unrated DeepSeek V4 Flash Vision Exp · DeepSeek · unrated DeepSeek V4 Pro 0423 · DeepSeek DeepSeek V4 Pro 0813 · DeepSeek · unrated DeepSeek V4.1 Flash · DeepSeek DeepSeek V4.1 Flash 1017 · DeepSeek · unrated Ember-1 · Fireworks · unrated Extract · Scaledown · unrated Free Models Router · OpenRouter · unrated Fugu Max · Sakana AI · unrated Fugu Ultra · Sakana AI · unrated Fugu Ultra v2 · Sakana AI · unrated Fusion · OpenRouter · unrated Gemini 2.5 Flash · Google Gemini 2.5 Flash Lite · Google · unrated Gemini 2.5 Pro · Google Gemini 2.5 Pro Preview 06-05 · Google · unrated Gemini 3 Flash Preview · Google · unrated Gemini 3.1 Flash Lite · Google · unrated Gemini 3.1 Flash Lite Preview · Google Gemini 3.1 Pro Preview · Google Gemini 3.1 Pro Preview Custom Tools · Google · unrated Gemini 3.5 Flash · Google Gemini 3.5 Flash Lite · Google Gemini 3.6 Flash · Google Gemini 3.7 Flash · Google Gemini 3.8 Flash · Google Gemini 4 Argon · Google Gemma 2 27B · Google Gemma 3 12B · Google Gemma 3 27B · Google Gemma 3 4B · Google Gemma 4 26B A4B · Google Gemma 4 31B · Google Glimpse · Elorian · unrated GLM 4.5 · Z.ai GLM 4.5 Air · Z.ai GLM 4.5V · Z.ai GLM 4.6 · Z.ai GLM 4.6V · Z.ai GLM 4.7 · Z.ai GLM 4.7 Flash · Z.ai GLM 5 · Z.ai GLM 5 Turbo · Z.ai · unrated GLM 5.1 · Z.ai GLM 5.2 · Z.ai GLM 5.3 · Z.ai GLM 5.3 Flash · Z.ai GLM 5.3 FlashX · Z.ai · unrated GLM 5.3 Prime · Z.ai · unrated GLM 5V Turbo · Z.ai GPT Audio · OpenAI · unrated GPT Audio Mini · OpenAI · unrated GPT Chat Latest · OpenAI · unrated GPT-3.5 Turbo · OpenAI · unrated GPT-3.5 Turbo (older v0613) · OpenAI · unrated GPT-3.5 Turbo 16k · OpenAI · unrated GPT-3.5 Turbo Instruct · OpenAI · unrated GPT-4 · OpenAI · unrated GPT-4 Turbo · OpenAI GPT-4.1 · OpenAI GPT-4.1 Mini · OpenAI GPT-4.1 Nano · OpenAI GPT-4o · OpenAI · unrated GPT-4o (2024-05-13) · OpenAI GPT-4o (2024-08-06) · OpenAI GPT-4o (2024-11-20) · OpenAI · unrated GPT-4o-mini · OpenAI · unrated GPT-4o-mini (2024-07-18) · OpenAI GPT-5 · OpenAI GPT-5 Image · OpenAI · unrated GPT-5 Image Mini · OpenAI · unrated GPT-5 Mini · OpenAI GPT-5 Nano · OpenAI GPT-5 Pro · OpenAI · unrated GPT-5.1 · OpenAI GPT-5.1-Codex · OpenAI · unrated GPT-5.1-Codex-Max · OpenAI · unrated GPT-5.1-Codex-Mini · OpenAI · unrated GPT-5.2 · OpenAI GPT-5.2 Chat · OpenAI · unrated GPT-5.2 Pro · OpenAI · unrated GPT-5.2-Codex · OpenAI · unrated GPT-5.3-Codex · OpenAI · unrated GPT-5.4 · OpenAI GPT-5.4 Image 2 · OpenAI · unrated GPT-5.4 Mini · OpenAI GPT-5.4 Nano · OpenAI GPT-5.4 Pro · OpenAI · unrated GPT-5.5 · OpenAI GPT-5.5 Pro · OpenAI · unrated GPT-5.6 Luna · OpenAI GPT-5.6 Luna Pro · OpenAI · unrated GPT-5.6 Sol · OpenAI GPT-5.6 Sol Pro · OpenAI · unrated GPT-5.6 Terra · OpenAI GPT-5.6 Terra Pro · OpenAI · unrated GPT-6 Astra · OpenAI GPT-6 Astra Pro · OpenAI · unrated GPT-6 Luna · OpenAI GPT-6 Luna Pro · OpenAI · unrated GPT-6 Sol · OpenAI GPT-6 Sol Pro · OpenAI · unrated GPT-6.1 Sol · OpenAI GPT-6.1 Sol Pro · OpenAI · unrated gpt-oss-120b · OpenAI gpt-oss-20b · OpenAI gpt-oss-safeguard-20b · OpenAI · unrated Granite 4.0 Micro · IBM · unrated Granite 4.2 8B · IBM Grok 4.20 · xAI · unrated Grok 4.20 Multi-Agent · xAI · unrated Grok 4.3 · xAI Grok 4.5 · xAI Grok 4.6 · xAI Grok 4.7 · xAI Grok Build 0.1 · xAI · unrated Hermes 3 405B Instruct · Nous Research · unrated Hermes 3 70B Instruct · Nous Research · unrated Hermes 4 405B · Nous Research · unrated Hunyuan A13B Instruct · Tencent · unrated Hy-MT2-1.8B · Tencent · unrated Hy-MT2-30B-A3B · Tencent · unrated Hy-MT2-7B · Tencent · unrated Hy3 · Tencent Hy3 preview · Tencent · unrated Hy4 preview · Tencent · unrated Inkling · Thinking Machines Inkling Small · Thinking Machines Jev Router · Typesafe · unrated Kimi K2 0711 · Moonshot AI · unrated Kimi K2 0905 · Moonshot AI · unrated Kimi K2 Thinking · Moonshot AI · unrated Kimi K2.5 · Moonshot AI Kimi K2.6 · Moonshot AI Kimi K2.7 Code · Moonshot AI · unrated Kimi K3 · Moonshot AI Laguna S 2.1 · Poolside · unrated Laguna XS 2.1 · Poolside · unrated LFM2.5-24B-A2B · Liquid AI · unrated Ling 3.0 Flash · inclusionAI · unrated Ling 3.0 Flash VL · inclusionAI · unrated Ling 3.1 Flash · inclusionAI · unrated Llama 3 8B Lunaris · Sao10k · unrated Llama 3.1 70B Instruct · Meta Llama 3.1 8B Instruct · Meta Llama 3.1 Euryale 70B v2.2 · Sao10k · unrated Llama 3.2 1B Instruct · Meta Llama 3.2 3B Instruct · Meta Llama 3.3 70B Instruct · Meta Llama 4 Maverick · Meta · unrated Llama 4 Scout · Meta · unrated Llama Guard 4 12B · Meta · unrated LongCat 2.0 · Meituan · unrated Lyria 3 Clip Preview · Google · unrated Lyria 3 Pro Preview · Google · unrated Magnum v4 72B · Anthracite Org · unrated Mercury 2 · Inception Mercury 2.5 · Inception · unrated Mercury 3 · Inception · unrated MiMo-V2.5 · Xiaomi MiMo-V2.5-Pro · Xiaomi MiMo-V2.6-Flash · Xiaomi MiMo-V2.6-Pro · Xiaomi MiMo-V2.6-Pro-UltraSpeed · Xiaomi · unrated MiniMax M1 · MiniMax MiniMax M2 · MiniMax MiniMax M2-her · MiniMax · unrated MiniMax M2.1 · MiniMax · unrated MiniMax M2.5 · MiniMax MiniMax M2.7 · MiniMax MiniMax M3 · MiniMax MiniMax-01 · MiniMax · unrated Ministral 3 14B 2512 · Mistral · unrated Ministral 3 3B 2512 · Mistral · unrated Ministral 3 8B 2512 · Mistral · unrated Mistral Large · Mistral · unrated Mistral Large 2407 · Mistral Mistral Large 3 2512 · Mistral · unrated Mistral Large 4 · Mistral Mistral Medium 3 · Mistral · unrated Mistral Medium 3.1 · Mistral · unrated Mistral Medium 3.5 · Mistral Mistral Nemo · Mistral · unrated Mistral Small 3 · Mistral Mistral Small 3.1 24B · Mistral · unrated Mistral Small 3.2 24B · Mistral · unrated Mistral Small 4 · Mistral · unrated Mixtral 8x22B Instruct · Mistral · unrated Moondream 3 Preview · Moondream · unrated Moondream 3.1 · Moondream · unrated Morph V3 Fast · Morph · unrated Morph V3 Large · Morph · unrated Muse Glimmer 30B · Meta · unrated Muse Spark 1.1 · Meta Muse Spark 1.2 · Meta Muse Spark 1.2 Contributor · Meta · unrated Muse Spark 1.3 · Meta Muse Spark 1.3 Contributor · Meta · unrated Muse Spark Open · Meta · unrated Muse Wonder · Meta MythoMax 13B · Gryphe · unrated Nano Banana (Gemini 2.5 Flash Image) · Google · unrated Nano Banana 2 (Gemini 3.1 Flash Image Preview) · Google · unrated Nano Banana 2 (Gemini 3.1 Flash Image) · Google · unrated Nano Banana 2 Lite (Gemini 3.1 Flash Lite Image) · Google · unrated Nano Banana 2.1 · Google · unrated Nano Banana Pro (Gemini 3 Pro Image Preview) · Google · unrated Nano Banana Pro (Gemini 3 Pro Image) · Google · unrated Nemotron 3 Nano 30B A3B · NVIDIA · unrated Nemotron 3 Super · NVIDIA · unrated Nemotron 3 Ultra · NVIDIA · unrated Nemotron 3.5 Content Safety · NVIDIA · unrated Nemotron 3.5 Lightning · NVIDIA · unrated Nemotron 3.5 Super VL · NVIDIA · unrated Nex-N2.5-Mini · Nex Agi · unrated Nex-N2.5-Pro · Nex Agi · unrated Nova 2 Lite · Amazon Nova Lite 1.0 · Amazon · unrated Nova Micro 1.0 · Amazon · unrated Nova Premier 1.0 · Amazon · unrated Nova Pro 1.0 · Amazon · unrated o1 · OpenAI o1-pro · OpenAI · unrated o3 · OpenAI o3 Mini · OpenAI o3 Mini High · OpenAI o3 Pro · OpenAI · unrated o4 Mini · OpenAI o4 Mini High · OpenAI · unrated Palmyra X5 · Writer · unrated Pareto 26.10 · Unbiased · unrated Pareto 26.9 · Unbiased · unrated Pareto Code Router · OpenRouter · unrated Perceptron Mk1 · Perceptron · unrated Perceptron Mk1.5 · Perceptron · unrated Phi 4 · Microsoft Qwen-Plus · Qwen · unrated Qwen2.5 72B Instruct · Qwen Qwen2.5 7B Instruct · Qwen · unrated Qwen2.5 Coder 32B Instruct · Qwen Qwen2.5 VL 72B Instruct · Qwen · unrated Qwen3 14B · Qwen · unrated Qwen3 235B A22B Instruct 2507 · Qwen Qwen3 235B A22B Thinking 2507 · Qwen Qwen3 30B A3B · Qwen Qwen3 30B A3B Instruct 2507 · Qwen Qwen3 32B · Qwen Qwen3 Coder 30B A3B Instruct · Qwen · unrated Qwen3 Coder 480B A35B · Qwen · unrated Qwen3 Coder Flash · Qwen · unrated Qwen3 Coder Next · Qwen · unrated Qwen3 Next 80B A3B Instruct · Qwen Qwen3 Next 80B A3B Thinking · Qwen Qwen3 VL 235B A22B Instruct · Qwen Qwen3 VL 30B A3B Instruct · Qwen · unrated Qwen3 VL 30B A3B Thinking · Qwen · unrated Qwen3 VL 8B Instruct · Qwen · unrated Qwen3.5 397B A17B · Qwen Qwen3.5 Plus 2026-02-15 · Qwen · unrated Qwen3.5 Plus 2026-04-20 · Qwen · unrated Qwen3.5-122B-A10B · Qwen Qwen3.5-27B · Qwen Qwen3.5-35B-A3B · Qwen Qwen3.5-9B · Qwen · unrated Qwen3.5-Flash · Qwen Qwen3.6 27B · Qwen · unrated Qwen3.6 35B A3B · Qwen · unrated Qwen3.6 Flash · Qwen · unrated Qwen3.6 Plus · Qwen Qwen3.7 Flash · Qwen · unrated Qwen3.7 Max · Qwen · unrated Qwen3.7 Plus · Qwen Qwen3.8 2.4T A95B · Qwen · unrated Qwen3.8 27B · Qwen Qwen3.8 Flash · Qwen · unrated Qwen3.8 Max (0902) · Qwen · unrated Qwen3.8 Max Prime · Qwen · unrated Qwen3.8 Omni Flash · Qwen · unrated R1 0528 · DeepSeek Reka Edge · Reka · unrated Reka Flash 3 · Reka · unrated Relace Apply 3 · Relace · unrated Relace Search · Relace · unrated ReMM SLERP 13B · Undi95 · unrated Saba · Mistral · unrated Sakana Namazu · Sakana AI · unrated Schematron V2 Small · Inference Net · unrated Schematron V2 Turbo · Inference Net · unrated Seed 1.6 · ByteDance · unrated Seed 1.6 Flash · ByteDance · unrated Seed 2.1 Turbo · ByteDance · unrated Seed-2.0-Code · ByteDance · unrated Seed-2.0-Lite · ByteDance · unrated Seed-2.0-Mini · ByteDance · unrated Skyfall 36B V2 · Thedrummer · unrated Solar Mini 4 · Upstage · unrated Solar Pro 3 · Upstage · unrated Solar Pro 4 · Upstage Sonar · Perplexity · unrated Sonar Deep Research · Perplexity · unrated Sonar Pro · Perplexity · unrated Sonar Pro Search · Perplexity · unrated Sonar Reasoning Pro · Perplexity · unrated Step 3.5 Flash · StepFun Step 3.7 Flash · StepFun · unrated Step 5 Preview · StepFun Summarize · Scaledown · unrated Switchyard · NVIDIA · unrated Ternary Bonsai 2 27B · Prism Ml · unrated Trinity Large Thinking · Arcee UI-TARS 7B · ByteDance · unrated Uncensored · Cognitivecomputations · unrated UnslopNemo 12B · Thedrummer · unrated Voxtral Small 24B 2507 · Mistral · unrated Weaver (alpha) · Mancer · unrated B · Comparison model Choose a model Aion 3.5 · Aion Labs · unrated Aion 3.5 Mini · Aion Labs · unrated Aion-2.0 · Aion Labs · unrated Aion-3.0 · Aion Labs · unrated Aion-3.0-Mini · Aion Labs · unrated Aion-RP 1.0 (8B) · Aion Labs · unrated Auto Router · OpenRouter · unrated Auto Router (Beta) · OpenRouter · unrated Beam 1.0 501B A23B · Reflection · unrated Body Builder (beta) · OpenRouter · unrated Claude Fable 5 · Anthropic Claude Fable 5.1 · Anthropic Claude Haiku 4.5 · Anthropic Claude Haiku 5.5 · Anthropic · unrated Claude Opus 4.1 · Anthropic Claude Opus 4.5 · Anthropic Claude Opus 4.6 · Anthropic Claude Opus 4.7 · Anthropic Claude Opus 4.8 · Anthropic Claude Opus 5 · Anthropic Claude Opus 5.5 · Anthropic Claude Sonnet 4.5 · Anthropic Claude Sonnet 4.6 · Anthropic Claude Sonnet 5 · Anthropic Claude Sonnet 5.5 · Anthropic Codestral 2508 · Mistral · unrated Command A · Cohere · unrated Command A+ · Cohere · unrated Command R (08-2024) · Cohere Command R+ (08-2024) · Cohere Command R7B (12-2024) · Cohere · unrated Cydonia 24B V4.1 · Thedrummer · unrated DeepSeek V3 · DeepSeek DeepSeek V3 0324 · DeepSeek DeepSeek V3.1 · DeepSeek DeepSeek V3.1 Terminus · DeepSeek DeepSeek V3.2 · DeepSeek DeepSeek V3.2 Exp · DeepSeek DeepSeek V4 Flash 0423 · DeepSeek DeepSeek V4 Flash 0731 · DeepSeek · unrated DeepSeek V4 Flash Vision Exp · DeepSeek · unrated DeepSeek V4 Pro 0423 · DeepSeek DeepSeek V4 Pro 0813 · DeepSeek · unrated DeepSeek V4.1 Flash · DeepSeek DeepSeek V4.1 Flash 1017 · DeepSeek · unrated Ember-1 · Fireworks · unrated Extract · Scaledown · unrated Free Models Router · OpenRouter · unrated Fugu Max · Sakana AI · unrated Fugu Ultra · Sakana AI · unrated Fugu Ultra v2 · Sakana AI · unrated Fusion · OpenRouter · unrated Gemini 2.5 Flash · Google Gemini 2.5 Flash Lite · Google · unrated Gemini 2.5 Pro · Google Gemini 2.5 Pro Preview 06-05 · Google · unrated Gemini 3 Flash Preview · Google · unrated Gemini 3.1 Flash Lite · Google · unrated Gemini 3.1 Flash Lite Preview · Google Gemini 3.1 Pro Preview · Google Gemini 3.1 Pro Preview Custom Tools · Google · unrated Gemini 3.5 Flash · Google Gemini 3.5 Flash Lite · Google Gemini 3.6 Flash · Google Gemini 3.7 Flash · Google Gemini 3.8 Flash · Google Gemini 4 Argon · Google Gemma 2 27B · Google Gemma 3 12B · Google Gemma 3 27B · Google Gemma 3 4B · Google Gemma 4 26B A4B · Google Gemma 4 31B · Google Glimpse · Elorian · unrated GLM 4.5 · Z.ai GLM 4.5 Air · Z.ai GLM 4.5V · Z.ai GLM 4.6 · Z.ai GLM 4.6V · Z.ai GLM 4.7 · Z.ai GLM 4.7 Flash · Z.ai GLM 5 · Z.ai GLM 5 Turbo · Z.ai · unrated GLM 5.1 · Z.ai GLM 5.2 · Z.ai GLM 5.3 · Z.ai GLM 5.3 Flash · Z.ai GLM 5.3 FlashX · Z.ai · unrated GLM 5.3 Prime · Z.ai · unrated GLM 5V Turbo · Z.ai GPT Audio · OpenAI · unrated GPT Audio Mini · OpenAI · unrated GPT Chat Latest · OpenAI · unrated GPT-3.5 Turbo · OpenAI · unrated GPT-3.5 Turbo (older v0613) · OpenAI · unrated GPT-3.5 Turbo 16k · OpenAI · unrated GPT-3.5 Turbo Instruct · OpenAI · unrated GPT-4 · OpenAI · unrated GPT-4 Turbo · OpenAI GPT-4.1 · OpenAI GPT-4.1 Mini · OpenAI GPT-4.1 Nano · OpenAI GPT-4o · OpenAI · unrated GPT-4o (2024-05-13) · OpenAI GPT-4o (2024-08-06) · OpenAI GPT-4o (2024-11-20) · OpenAI · unrated GPT-4o-mini · OpenAI · unrated GPT-4o-mini (2024-07-18) · OpenAI GPT-5 · OpenAI GPT-5 Image · OpenAI · unrated GPT-5 Image Mini · OpenAI · unrated GPT-5 Mini · OpenAI GPT-5 Nano · OpenAI GPT-5 Pro · OpenAI · unrated GPT-5.1 · OpenAI GPT-5.1-Codex · OpenAI · unrated GPT-5.1-Codex-Max · OpenAI · unrated GPT-5.1-Codex-Mini · OpenAI · unrated GPT-5.2 · OpenAI GPT-5.2 Chat · OpenAI · unrated GPT-5.2 Pro · OpenAI · unrated GPT-5.2-Codex · OpenAI · unrated GPT-5.3-Codex · OpenAI · unrated GPT-5.4 · OpenAI GPT-5.4 Image 2 · OpenAI · unrated GPT-5.4 Mini · OpenAI GPT-5.4 Nano · OpenAI GPT-5.4 Pro · OpenAI · unrated GPT-5.5 · OpenAI GPT-5.5 Pro · OpenAI · unrated GPT-5.6 Luna · OpenAI GPT-5.6 Luna Pro · OpenAI · unrated GPT-5.6 Sol · OpenAI GPT-5.6 Sol Pro · OpenAI · unrated GPT-5.6 Terra · OpenAI GPT-5.6 Terra Pro · OpenAI · unrated GPT-6 Astra · OpenAI GPT-6 Astra Pro · OpenAI · unrated GPT-6 Luna · OpenAI GPT-6 Luna Pro · OpenAI · unrated GPT-6 Sol · OpenAI GPT-6 Sol Pro · OpenAI · unrated GPT-6.1 Sol · OpenAI GPT-6.1 Sol Pro · OpenAI · unrated gpt-oss-120b · OpenAI gpt-oss-20b · OpenAI gpt-oss-safeguard-20b · OpenAI · unrated Granite 4.0 Micro · IBM · unrated Granite 4.2 8B · IBM Grok 4.20 · xAI · unrated Grok 4.20 Multi-Agent · xAI · unrated Grok 4.3 · xAI Grok 4.5 · xAI Grok 4.6 · xAI Grok 4.7 · xAI Grok Build 0.1 · xAI · unrated Hermes 3 405B Instruct · Nous Research · unrated Hermes 3 70B Instruct · Nous Research · unrated Hermes 4 405B · Nous Research · unrated Hunyuan A13B Instruct · Tencent · unrated Hy-MT2-1.8B · Tencent · unrated Hy-MT2-30B-A3B · Tencent · unrated Hy-MT2-7B · Tencent · unrated Hy3 · Tencent Hy3 preview · Tencent · unrated Hy4 preview · Tencent · unrated Inkling · Thinking Machines Inkling Small · Thinking Machines Jev Router · Typesafe · unrated Kimi K2 0711 · Moonshot AI · unrated Kimi K2 0905 · Moonshot AI · unrated Kimi K2 Thinking · Moonshot AI · unrated Kimi K2.5 · Moonshot AI Kimi K2.6 · Moonshot AI Kimi K2.7 Code · Moonshot AI · unrated Kimi K3 · Moonshot AI Laguna S 2.1 · Poolside · unrated Laguna XS 2.1 · Poolside · unrated LFM2.5-24B-A2B · Liquid AI · unrated Ling 3.0 Flash · inclusionAI · unrated Ling 3.0 Flash VL · inclusionAI · unrated Ling 3.1 Flash · inclusionAI · unrated Llama 3 8B Lunaris · Sao10k · unrated Llama 3.1 70B Instruct · Meta Llama 3.1 8B Instruct · Meta Llama 3.1 Euryale 70B v2.2 · Sao10k · unrated Llama 3.2 1B Instruct · Meta Llama 3.2 3B Instruct · Meta Llama 3.3 70B Instruct · Meta Llama 4 Maverick · Meta · unrated Llama 4 Scout · Meta · unrated Llama Guard 4 12B · Meta · unrated LongCat 2.0 · Meituan · unrated Lyria 3 Clip Preview · Google · unrated Lyria 3 Pro Preview · Google · unrated Magnum v4 72B · Anthracite Org · unrated Mercury 2 · Inception Mercury 2.5 · Inception · unrated Mercury 3 · Inception · unrated MiMo-V2.5 · Xiaomi MiMo-V2.5-Pro · Xiaomi MiMo-V2.6-Flash · Xiaomi MiMo-V2.6-Pro · Xiaomi MiMo-V2.6-Pro-UltraSpeed · Xiaomi · unrated MiniMax M1 · MiniMax MiniMax M2 · MiniMax MiniMax M2-her · MiniMax · unrated MiniMax M2.1 · MiniMax · unrated MiniMax M2.5 · MiniMax MiniMax M2.7 · MiniMax MiniMax M3 · MiniMax MiniMax-01 · MiniMax · unrated Ministral 3 14B 2512 · Mistral · unrated Ministral 3 3B 2512 · Mistral · unrated Ministral 3 8B 2512 · Mistral · unrated Mistral Large · Mistral · unrated Mistral Large 2407 · Mistral Mistral Large 3 2512 · Mistral · unrated Mistral Large 4 · Mistral Mistral Medium 3 · Mistral · unrated Mistral Medium 3.1 · Mistral · unrated Mistral Medium 3.5 · Mistral Mistral Nemo · Mistral · unrated Mistral Small 3 · Mistral Mistral Small 3.1 24B · Mistral · unrated Mistral Small 3.2 24B · Mistral · unrated Mistral Small 4 · Mistral · unrated Mixtral 8x22B Instruct · Mistral · unrated Moondream 3 Preview · Moondream · unrated Moondream 3.1 · Moondream · unrated Morph V3 Fast · Morph · unrated Morph V3 Large · Morph · unrated Muse Glimmer 30B · Meta · unrated Muse Spark 1.1 · Meta Muse Spark 1.2 · Meta Muse Spark 1.2 Contributor · Meta · unrated Muse Spark 1.3 · Meta Muse Spark 1.3 Contributor · Meta · unrated Muse Spark Open · Meta · unrated Muse Wonder · Meta MythoMax 13B · Gryphe · unrated Nano Banana (Gemini 2.5 Flash Image) · Google · unrated Nano Banana 2 (Gemini 3.1 Flash Image Preview) · Google · unrated Nano Banana 2 (Gemini 3.1 Flash Image) · Google · unrated Nano Banana 2 Lite (Gemini 3.1 Flash Lite Image) · Google · unrated Nano Banana 2.1 · Google · unrated Nano Banana Pro (Gemini 3 Pro Image Preview) · Google · unrated Nano Banana Pro (Gemini 3 Pro Image) · Google · unrated Nemotron 3 Nano 30B A3B · NVIDIA · unrated Nemotron 3 Super · NVIDIA · unrated Nemotron 3 Ultra · NVIDIA · unrated Nemotron 3.5 Content Safety · NVIDIA · unrated Nemotron 3.5 Lightning · NVIDIA · unrated Nemotron 3.5 Super VL · NVIDIA · unrated Nex-N2.5-Mini · Nex Agi · unrated Nex-N2.5-Pro · Nex Agi · unrated Nova 2 Lite · Amazon Nova Lite 1.0 · Amazon · unrated Nova Micro 1.0 · Amazon · unrated Nova Premier 1.0 · Amazon · unrated Nova Pro 1.0 · Amazon · unrated o1 · OpenAI o1-pro · OpenAI · unrated o3 · OpenAI o3 Mini · OpenAI o3 Mini High · OpenAI o3 Pro · OpenAI · unrated o4 Mini · OpenAI o4 Mini High · OpenAI · unrated Palmyra X5 · Writer · unrated Pareto 26.10 · Unbiased · unrated Pareto 26.9 · Unbiased · unrated Pareto Code Router · OpenRouter · unrated Perceptron Mk1 · Perceptron · unrated Perceptron Mk1.5 · Perceptron · unrated Phi 4 · Microsoft Qwen-Plus · Qwen · unrated Qwen2.5 72B Instruct · Qwen Qwen2.5 7B Instruct · Qwen · unrated Qwen2.5 Coder 32B Instruct · Qwen Qwen2.5 VL 72B Instruct · Qwen · unrated Qwen3 14B · Qwen · unrated Qwen3 235B A22B Instruct 2507 · Qwen Qwen3 235B A22B Thinking 2507 · Qwen Qwen3 30B A3B · Qwen Qwen3 30B A3B Instruct 2507 · Qwen Qwen3 32B · Qwen Qwen3 Coder 30B A3B Instruct · Qwen · unrated Qwen3 Coder 480B A35B · Qwen · unrated Qwen3 Coder Flash · Qwen · unrated Qwen3 Coder Next · Qwen · unrated Qwen3 Next 80B A3B Instruct · Qwen Qwen3 Next 80B A3B Thinking · Qwen Qwen3 VL 235B A22B Instruct · Qwen Qwen3 VL 30B A3B Instruct · Qwen · unrated Qwen3 VL 30B A3B Thinking · Qwen · unrated Qwen3 VL 8B Instruct · Qwen · unrated Qwen3.5 397B A17B · Qwen Qwen3.5 Plus 2026-02-15 · Qwen · unrated Qwen3.5 Plus 2026-04-20 · Qwen · unrated Qwen3.5-122B-A10B · Qwen Qwen3.5-27B · Qwen Qwen3.5-35B-A3B · Qwen Qwen3.5-9B · Qwen · unrated Qwen3.5-Flash · Qwen Qwen3.6 27B · Qwen · unrated Qwen3.6 35B A3B · Qwen · unrated Qwen3.6 Flash · Qwen · unrated Qwen3.6 Plus · Qwen Qwen3.7 Flash · Qwen · unrated Qwen3.7 Max · Qwen · unrated Qwen3.7 Plus · Qwen Qwen3.8 2.4T A95B · Qwen · unrated Qwen3.8 27B · Qwen Qwen3.8 Flash · Qwen · unrated Qwen3.8 Max (0902) · Qwen · unrated Qwen3.8 Max Prime · Qwen · unrated Qwen3.8 Omni Flash · Qwen · unrated R1 0528 · DeepSeek Reka Edge · Reka · unrated Reka Flash 3 · Reka · unrated Relace Apply 3 · Relace · unrated Relace Search · Relace · unrated ReMM SLERP 13B · Undi95 · unrated Saba · Mistral · unrated Sakana Namazu · Sakana AI · unrated Schematron V2 Small · Inference Net · unrated Schematron V2 Turbo · Inference Net · unrated Seed 1.6 · ByteDance · unrated Seed 1.6 Flash · ByteDance · unrated Seed 2.1 Turbo · ByteDance · unrated Seed-2.0-Code · ByteDance · unrated Seed-2.0-Lite · ByteDance · unrated Seed-2.0-Mini · ByteDance · unrated Skyfall 36B V2 · Thedrummer · unrated Solar Mini 4 · Upstage · unrated Solar Pro 3 · Upstage · unrated Solar Pro 4 · Upstage Sonar · Perplexity · unrated Sonar Deep Research · Perplexity · unrated Sonar Pro · Perplexity · unrated Sonar Pro Search · Perplexity · unrated Sonar Reasoning Pro · Perplexity · unrated Step 3.5 Flash · StepFun Step 3.7 Flash · StepFun · unrated Step 5 Preview · StepFun Summarize · Scaledown · unrated Switchyard · NVIDIA · unrated Ternary Bonsai 2 27B · Prism Ml · unrated Trinity Large Thinking · Arcee UI-TARS 7B · ByteDance · unrated Uncensored · Cognitivecomputations · unrated UnslopNemo 12B · Thedrummer · unrated Voxtral Small 24B 2507 · Mistral · unrated Weaver (alpha) · Mancer · unrated C · Optional third model No third model Aion 3.5 · Aion Labs · unrated Aion 3.5 Mini · Aion Labs · unrated Aion-2.0 · Aion Labs · unrated Aion-3.0 · Aion Labs · unrated Aion-3.0-Mini · Aion Labs · unrated Aion-RP 1.0 (8B) · Aion Labs · unrated Auto Router · OpenRouter · unrated Auto Router (Beta) · OpenRouter · unrated Beam 1.0 501B A23B · Reflection · unrated Body Builder (beta) · OpenRouter · unrated Claude Fable 5 · Anthropic Claude Fable 5.1 · Anthropic Claude Haiku 4.5 · Anthropic Claude Haiku 5.5 · Anthropic · unrated Claude Opus 4.1 · Anthropic Claude Opus 4.5 · Anthropic Claude Opus 4.6 · Anthropic Claude Opus 4.7 · Anthropic Claude Opus 4.8 · Anthropic Claude Opus 5 · Anthropic Claude Opus 5.5 · Anthropic Claude Sonnet 4.5 · Anthropic Claude Sonnet 4.6 · Anthropic Claude Sonnet 5 · Anthropic Claude Sonnet 5.5 · Anthropic Codestral 2508 · Mistral · unrated Command A · Cohere · unrated Command A+ · Cohere · unrated Command R (08-2024) · Cohere Command R+ (08-2024) · Cohere Command R7B (12-2024) · Cohere · unrated Cydonia 24B V4.1 · Thedrummer · unrated DeepSeek V3 · DeepSeek DeepSeek V3 0324 · DeepSeek DeepSeek V3.1 · DeepSeek DeepSeek V3.1 Terminus · DeepSeek DeepSeek V3.2 · DeepSeek DeepSeek V3.2 Exp · DeepSeek DeepSeek V4 Flash 0423 · DeepSeek DeepSeek V4 Flash 0731 · DeepSeek · unrated DeepSeek V4 Flash Vision Exp · DeepSeek · unrated DeepSeek V4 Pro 0423 · DeepSeek DeepSeek V4 Pro 0813 · DeepSeek · unrated DeepSeek V4.1 Flash · DeepSeek DeepSeek V4.1 Flash 1017 · DeepSeek · unrated Ember-1 · Fireworks · unrated Extract · Scaledown · unrated Free Models Router · OpenRouter · unrated Fugu Max · Sakana AI · unrated Fugu Ultra · Sakana AI · unrated Fugu Ultra v2 · Sakana AI · unrated Fusion · OpenRouter · unrated Gemini 2.5 Flash · Google Gemini 2.5 Flash Lite · Google · unrated Gemini 2.5 Pro · Google Gemini 2.5 Pro Preview 06-05 · Google · unrated Gemini 3 Flash Preview · Google · unrated Gemini 3.1 Flash Lite · Google · unrated Gemini 3.1 Flash Lite Preview · Google Gemini 3.1 Pro Preview · Google Gemini 3.1 Pro Preview Custom Tools · Google · unrated Gemini 3.5 Flash · Google Gemini 3.5 Flash Lite · Google Gemini 3.6 Flash · Google Gemini 3.7 Flash · Google Gemini 3.8 Flash · Google Gemini 4 Argon · Google Gemma 2 27B · Google Gemma 3 12B · Google Gemma 3 27B · Google Gemma 3 4B · Google Gemma 4 26B A4B · Google Gemma 4 31B · Google Glimpse · Elorian · unrated GLM 4.5 · Z.ai GLM 4.5 Air · Z.ai GLM 4.5V · Z.ai GLM 4.6 · Z.ai GLM 4.6V · Z.ai GLM 4.7 · Z.ai GLM 4.7 Flash · Z.ai GLM 5 · Z.ai GLM 5 Turbo · Z.ai · unrated GLM 5.1 · Z.ai GLM 5.2 · Z.ai GLM 5.3 · Z.ai GLM 5.3 Flash · Z.ai GLM 5.3 FlashX · Z.ai · unrated GLM 5.3 Prime · Z.ai · unrated GLM 5V Turbo · Z.ai GPT Audio · OpenAI · unrated GPT Audio Mini · OpenAI · unrated GPT Chat Latest · OpenAI · unrated GPT-3.5 Turbo · OpenAI · unrated GPT-3.5 Turbo (older v0613) · OpenAI · unrated GPT-3.5 Turbo 16k · OpenAI · unrated GPT-3.5 Turbo Instruct · OpenAI · unrated GPT-4 · OpenAI · unrated GPT-4 Turbo · OpenAI GPT-4.1 · OpenAI GPT-4.1 Mini · OpenAI GPT-4.1 Nano · OpenAI GPT-4o · OpenAI · unrated GPT-4o (2024-05-13) · OpenAI GPT-4o (2024-08-06) · OpenAI GPT-4o (2024-11-20) · OpenAI · unrated GPT-4o-mini · OpenAI · unrated GPT-4o-mini (2024-07-18) · OpenAI GPT-5 · OpenAI GPT-5 Image · OpenAI · unrated GPT-5 Image Mini · OpenAI · unrated GPT-5 Mini · OpenAI GPT-5 Nano · OpenAI GPT-5 Pro · OpenAI · unrated GPT-5.1 · OpenAI GPT-5.1-Codex · OpenAI · unrated GPT-5.1-Codex-Max · OpenAI · unrated GPT-5.1-Codex-Mini · OpenAI · unrated GPT-5.2 · OpenAI GPT-5.2 Chat · OpenAI · unrated GPT-5.2 Pro · OpenAI · unrated GPT-5.2-Codex · OpenAI · unrated GPT-5.3-Codex · OpenAI · unrated GPT-5.4 · OpenAI GPT-5.4 Image 2 · OpenAI · unrated GPT-5.4 Mini · OpenAI GPT-5.4 Nano · OpenAI GPT-5.4 Pro · OpenAI · unrated GPT-5.5 · OpenAI GPT-5.5 Pro · OpenAI · unrated GPT-5.6 Luna · OpenAI GPT-5.6 Luna Pro · OpenAI · unrated GPT-5.6 Sol · OpenAI GPT-5.6 Sol Pro · OpenAI · unrated GPT-5.6 Terra · OpenAI GPT-5.6 Terra Pro · OpenAI · unrated GPT-6 Astra · OpenAI GPT-6 Astra Pro · OpenAI · unrated GPT-6 Luna · OpenAI GPT-6 Luna Pro · OpenAI · unrated GPT-6 Sol · OpenAI GPT-6 Sol Pro · OpenAI · unrated GPT-6.1 Sol · OpenAI GPT-6.1 Sol Pro · OpenAI · unrated gpt-oss-120b · OpenAI gpt-oss-20b · OpenAI gpt-oss-safeguard-20b · OpenAI · unrated Granite 4.0 Micro · IBM · unrated Granite 4.2 8B · IBM Grok 4.20 · xAI · unrated Grok 4.20 Multi-Agent · xAI · unrated Grok 4.3 · xAI Grok 4.5 · xAI Grok 4.6 · xAI Grok 4.7 · xAI Grok Build 0.1 · xAI · unrated Hermes 3 405B Instruct · Nous Research · unrated Hermes 3 70B Instruct · Nous Research · unrated Hermes 4 405B · Nous Research · unrated Hunyuan A13B Instruct · Tencent · unrated Hy-MT2-1.8B · Tencent · unrated Hy-MT2-30B-A3B · Tencent · unrated Hy-MT2-7B · Tencent · unrated Hy3 · Tencent Hy3 preview · Tencent · unrated Hy4 preview · Tencent · unrated Inkling · Thinking Machines Inkling Small · Thinking Machines Jev Router · Typesafe · unrated Kimi K2 0711 · Moonshot AI · unrated Kimi K2 0905 · Moonshot AI · unrated Kimi K2 Thinking · Moonshot AI · unrated Kimi K2.5 · Moonshot AI Kimi K2.6 · Moonshot AI Kimi K2.7 Code · Moonshot AI · unrated Kimi K3 · Moonshot AI Laguna S 2.1 · Poolside · unrated Laguna XS 2.1 · Poolside · unrated LFM2.5-24B-A2B · Liquid AI · unrated Ling 3.0 Flash · inclusionAI · unrated Ling 3.0 Flash VL · inclusionAI · unrated Ling 3.1 Flash · inclusionAI · unrated Llama 3 8B Lunaris · Sao10k · unrated Llama 3.1 70B Instruct · Meta Llama 3.1 8B Instruct · Meta Llama 3.1 Euryale 70B v2.2 · Sao10k · unrated Llama 3.2 1B Instruct · Meta Llama 3.2 3B Instruct · Meta Llama 3.3 70B Instruct · Meta Llama 4 Maverick · Meta · unrated Llama 4 Scout · Meta · unrated Llama Guard 4 12B · Meta · unrated LongCat 2.0 · Meituan · unrated Lyria 3 Clip Preview · Google · unrated Lyria 3 Pro Preview · Google · unrated Magnum v4 72B · Anthracite Org · unrated Mercury 2 · Inception Mercury 2.5 · Inception · unrated Mercury 3 · Inception · unrated MiMo-V2.5 · Xiaomi MiMo-V2.5-Pro · Xiaomi MiMo-V2.6-Flash · Xiaomi MiMo-V2.6-Pro · Xiaomi MiMo-V2.6-Pro-UltraSpeed · Xiaomi · unrated MiniMax M1 · MiniMax MiniMax M2 · MiniMax MiniMax M2-her · MiniMax · unrated MiniMax M2.1 · MiniMax · unrated MiniMax M2.5 · MiniMax MiniMax M2.7 · MiniMax MiniMax M3 · MiniMax MiniMax-01 · MiniMax · unrated Ministral 3 14B 2512 · Mistral · unrated Ministral 3 3B 2512 · Mistral · unrated Ministral 3 8B 2512 · Mistral · unrated Mistral Large · Mistral · unrated Mistral Large 2407 · Mistral Mistral Large 3 2512 · Mistral · unrated Mistral Large 4 · Mistral Mistral Medium 3 · Mistral · unrated Mistral Medium 3.1 · Mistral · unrated Mistral Medium 3.5 · Mistral Mistral Nemo · Mistral · unrated Mistral Small 3 · Mistral Mistral Small 3.1 24B · Mistral · unrated Mistral Small 3.2 24B · Mistral · unrated Mistral Small 4 · Mistral · unrated Mixtral 8x22B Instruct · Mistral · unrated Moondream 3 Preview · Moondream · unrated Moondream 3.1 · Moondream · unrated Morph V3 Fast · Morph · unrated Morph V3 Large · Morph · unrated Muse Glimmer 30B · Meta · unrated Muse Spark 1.1 · Meta Muse Spark 1.2 · Meta Muse Spark 1.2 Contributor · Meta · unrated Muse Spark 1.3 · Meta Muse Spark 1.3 Contributor · Meta · unrated Muse Spark Open · Meta · unrated Muse Wonder · Meta MythoMax 13B · Gryphe · unrated Nano Banana (Gemini 2.5 Flash Image) · Google · unrated Nano Banana 2 (Gemini 3.1 Flash Image Preview) · Google · unrated Nano Banana 2 (Gemini 3.1 Flash Image) · Google · unrated Nano Banana 2 Lite (Gemini 3.1 Flash Lite Image) · Google · unrated Nano Banana 2.1 · Google · unrated Nano Banana Pro (Gemini 3 Pro Image Preview) · Google · unrated Nano Banana Pro (Gemini 3 Pro Image) · Google · unrated Nemotron 3 Nano 30B A3B · NVIDIA · unrated Nemotron 3 Super · NVIDIA · unrated Nemotron 3 Ultra · NVIDIA · unrated Nemotron 3.5 Content Safety · NVIDIA · unrated Nemotron 3.5 Lightning · NVIDIA · unrated Nemotron 3.5 Super VL · NVIDIA · unrated Nex-N2.5-Mini · Nex Agi · unrated Nex-N2.5-Pro · Nex Agi · unrated Nova 2 Lite · Amazon Nova Lite 1.0 · Amazon · unrated Nova Micro 1.0 · Amazon · unrated Nova Premier 1.0 · Amazon · unrated Nova Pro 1.0 · Amazon · unrated o1 · OpenAI o1-pro · OpenAI · unrated o3 · OpenAI o3 Mini · OpenAI o3 Mini High · OpenAI o3 Pro · OpenAI · unrated o4 Mini · OpenAI o4 Mini High · OpenAI · unrated Palmyra X5 · Writer · unrated Pareto 26.10 · Unbiased · unrated Pareto 26.9 · Unbiased · unrated Pareto Code Router · OpenRouter · unrated Perceptron Mk1 · Perceptron · unrated Perceptron Mk1.5 · Perceptron · unrated Phi 4 · Microsoft Qwen-Plus · Qwen · unrated Qwen2.5 72B Instruct · Qwen Qwen2.5 7B Instruct · Qwen · unrated Qwen2.5 Coder 32B Instruct · Qwen Qwen2.5 VL 72B Instruct · Qwen · unrated Qwen3 14B · Qwen · unrated Qwen3 235B A22B Instruct 2507 · Qwen Qwen3 235B A22B Thinking 2507 · Qwen Qwen3 30B A3B · Qwen Qwen3 30B A3B Instruct 2507 · Qwen Qwen3 32B · Qwen Qwen3 Coder 30B A3B Instruct · Qwen · unrated Qwen3 Coder 480B A35B · Qwen · unrated Qwen3 Coder Flash · Qwen · unrated Qwen3 Coder Next · Qwen · unrated Qwen3 Next 80B A3B Instruct · Qwen Qwen3 Next 80B A3B Thinking · Qwen Qwen3 VL 235B A22B Instruct · Qwen Qwen3 VL 30B A3B Instruct · Qwen · unrated Qwen3 VL 30B A3B Thinking · Qwen · unrated Qwen3 VL 8B Instruct · Qwen · unrated Qwen3.5 397B A17B · Qwen Qwen3.5 Plus 2026-02-15 · Qwen · unrated Qwen3.5 Plus 2026-04-20 · Qwen · unrated Qwen3.5-122B-A10B · Qwen Qwen3.5-27B · Qwen Qwen3.5-35B-A3B · Qwen Qwen3.5-9B · Qwen · unrated Qwen3.5-Flash · Qwen Qwen3.6 27B · Qwen · unrated Qwen3.6 35B A3B · Qwen · unrated Qwen3.6 Flash · Qwen · unrated Qwen3.6 Plus · Qwen Qwen3.7 Flash · Qwen · unrated Qwen3.7 Max · Qwen · unrated Qwen3.7 Plus · Qwen Qwen3.8 2.4T A95B · Qwen · unrated Qwen3.8 27B · Qwen Qwen3.8 Flash · Qwen · unrated Qwen3.8 Max (0902) · Qwen · unrated Qwen3.8 Max Prime · Qwen · unrated Qwen3.8 Omni Flash · Qwen · unrated R1 0528 · DeepSeek Reka Edge · Reka · unrated Reka Flash 3 · Reka · unrated Relace Apply 3 · Relace · unrated Relace Search · Relace · unrated ReMM SLERP 13B · Undi95 · unrated Saba · Mistral · unrated Sakana Namazu · Sakana AI · unrated Schematron V2 Small · Inference Net · unrated Schematron V2 Turbo · Inference Net · unrated Seed 1.6 · ByteDance · unrated Seed 1.6 Flash · ByteDance · unrated Seed 2.1 Turbo · ByteDance · unrated Seed-2.0-Code · ByteDance · unrated Seed-2.0-Lite · ByteDance · unrated Seed-2.0-Mini · ByteDance · unrated Skyfall 36B V2 · Thedrummer · unrated Solar Mini 4 · Upstage · unrated Solar Pro 3 · Upstage · unrated Solar Pro 4 · Upstage Sonar · Perplexity · unrated Sonar Deep Research · Perplexity · unrated Sonar Pro · Perplexity · unrated Sonar Pro Search · Perplexity · unrated Sonar Reasoning Pro · Perplexity · unrated Step 3.5 Flash · StepFun Step 3.7 Flash · StepFun · unrated Step 5 Preview · StepFun Summarize · Scaledown · unrated Switchyard · NVIDIA · unrated Ternary Bonsai 2 27B · Prism Ml · unrated Trinity Large Thinking · Arcee UI-TARS 7B · ByteDance · unrated Uncensored · Cognitivecomputations · unrated UnslopNemo 12B · Thedrummer · unrated Voxtral Small 24B 2507 · Mistral · unrated Weaver (alpha) · Mancer · unrated
 2 / 3 selected · 0 requirements Copy public link [Open public comparison link](https://undominated.ai/compare/?models=anthropic%2Fclaude-opus-5.5%2Cdeepseek%2Fdeepseek-v4.1-flash) Clear shortlist

 Public workload and requirements

These settings are included in the share link. The fixed-request scenario and private evaluation data below are excluded.

 Workload Balanced · 3 tokens in per 1 out Summarise · Huge input, tiny output Chat · Long cached system prompt Code gen · Output dominates Agentic · Context replayed each turn Public prompt length (tokens) Required context (tokens) Required output limit (tokens) Required input modality No requirement text image audio video file
 Tool use Reasoning Open weights
 **A ↔ B**

Neither model has both an equal-or-higher measured score and an equal-or-lower estimated price in this pair. Retaining your current model is a valid outcome.

Estimated blend: 75% input, 25% output; 0% cached input. Base context tier. Prompt length selects the billing tier. An unlisted cache-read rate uses that tier’s full input rate in this blend; missing required input or output rates prevent an estimate. The fixed-request estimate below validates actual context and output limits and requires a published cache-read rate when cache hits are assumed.

### What changes between these models

Quality first, then estimated price. LMArena scores are human-preference measurements, not a benchmark of your application. A missing score is unrated.

 - **Claude Opus 5.5** · Meets the stated model requirements
- **DeepSeek V4.1 Flash** · Meets the stated model requirements

Material differences and unknown evidence. Deltas compare each model with model A. Unknown facts remain visible.

| Measured fact | A [Claude Opus 5.5](https://undominated.ai/models/anthropic__claude-opus-5.5/?models=anthropic%2Fclaude-opus-5.5%2Cdeepseek%2Fdeepseek-v4.1-flash) | B [DeepSeek V4.1 Flash](https://undominated.ai/models/deepseek__deepseek-v4.1-flash/?models=anthropic%2Fclaude-opus-5.5%2Cdeepseek%2Fdeepseek-v4.1-flash) |
| --- | --- | --- |
| LMArena general score (Elo) | 1,515.5 | 1,462.5 Δ vs A: -53 Elo |
| Score interval half-width (± Elo) | 7.52 | 6.29 Δ vs A: -1.23 Elo |
| Benchmark reasoning effort | high | max |
| LMArena document score (Elo) | Unknown | Unknown |
| Estimated effective USD / 1M tokens | $8 | $0.18225 Δ vs A: -7.81775 USD/M |
| Base input USD / 1M tokens | $4 | $0.053 Δ vs A: -3.947 USD/M |
| Base output USD / 1M tokens | $20 | $0.57 Δ vs A: -19.43 USD/M |
| Base cached-input USD / 1M tokens | $0.2 | $0.01 Δ vs A: -0.19 USD/M |
| Price status | As of the catalogue date | Under confirmation since 2026-10-12 |
| Context window (tokens) | 1,000,000 | 1,048,576 Δ vs A: +48,576 tokens |
| Output limit (tokens) | 128,000 | 943,718 Δ vs A: +815,718 tokens |
| Input modalities | text, image, file | text, image |
| Open weights | Not supported | Unknown |
| Recorded licence | Unknown | Unknown |
| Model provider | Anthropic | DeepSeek |
| Distinct sellers in the catalogue | 5 | 29 Δ vs A: +24 |
| Serving precision differs across offers | Not supported | Supported Δ vs A: +1 |
| Recorded retirement date | Unknown | Unknown |

 3 shared measured facts

Shared measured facts. Deltas compare each model with model A. Unknown facts remain visible.

| Measured fact | A [Claude Opus 5.5](https://undominated.ai/models/anthropic__claude-opus-5.5/?models=anthropic%2Fclaude-opus-5.5%2Cdeepseek%2Fdeepseek-v4.1-flash) | B [DeepSeek V4.1 Flash](https://undominated.ai/models/deepseek__deepseek-v4.1-flash/?models=anthropic%2Fclaude-opus-5.5%2Cdeepseek%2Fdeepseek-v4.1-flash) |
| --- | --- | --- |
| Tool use | Supported | Supported Δ vs A: 0 |
| Reasoning | Supported | Supported Δ vs A: 0 |
| Retirement evidence | None announced; not a guarantee | None announced; not a guarantee |

Provider counts and precision flags describe catalogue offers. They do not establish the precision, availability, region, tool behaviour or limits of your chosen endpoint. Open each model’s provider table before switching.

 Complete price ladders and billing conditions

#### [Claude Opus 5.5](https://undominated.ai/models/anthropic__claude-opus-5.5/?models=anthropic%2Fclaude-opus-5.5%2Cdeepseek%2Fdeepseek-v4.1-flash)

Rates below are USD per 1M tokens. A threshold selects that whole input/output rate pair.

| Input-token threshold | Input | Output | Cached input |
| --- | --- | --- | --- |
| Base, up to and including first threshold | $4 | $20 | $0.2 |

#### [DeepSeek V4.1 Flash](https://undominated.ai/models/deepseek__deepseek-v4.1-flash/?models=anthropic%2Fclaude-opus-5.5%2Cdeepseek%2Fdeepseek-v4.1-flash)

Rates below are USD per 1M tokens. A threshold selects that whole input/output rate pair.

| Input-token threshold | Input | Output | Cached input |
| --- | --- | --- | --- |
| Base, up to and including first threshold | $0.053 | $0.57 | $0.01 |

 Migration preflight · compare each candidate with model A

Keeping Claude Opus 5.5 is a valid decision. No pairwise comparison certifies a drop-in replacement.

#### Claude Opus 5.5 → DeepSeek V4.1 Flash

Known loss or failed requirement

 - file input is not supported by the candidate.
 - Provider endpoint, serving precision, availability and task success need your own verification. Catalogue model capabilities do not certify an endpoint.
 [Check alternatives to Claude Opus 5.5](https://undominated.ai/check/anthropic__claude-opus-5.5/)

### Estimate a fixed request shape

Private to this tab unless you save locally or explicitly export private details. These are estimates, not observed invoices. Cross-model token counts and task success are assumptions.

 Requests Input tokens per request Output tokens per request Cached share of input (%) Extra attempts per request

0.1 extra attempts means 10 extra full attempts per 100 requests. Cache writes, tool charges, taxes and unlisted charges are excluded.

 - **Claude Opus 5.5** Estimated total: $18 1,000 full attempts · base rates
- **DeepSeek V4.1 Flash** Estimated total: $0.391 1,000 full attempts · base rates
 Prompt and output sensitivity · sampled scenarios

Every point recalculates the entire request shape. Tier-boundary samples include one token below, at and above each threshold. Ordering between samples is not guaranteed. Lowest known cost excludes unknown estimates and is not a replacement recommendation.

Vary input; hold output, requests, cache and retries fixed.

| Input tokens | Claude Opus 5.5 | DeepSeek V4.1 Flash | Coverage |
| --- | --- | --- | --- |
| 2,000 | $18 | $0.391 Lowest known | All computed |
| 4,096 | $26.384 | $0.502088 Lowest known | All computed |
| 32,768 | $141.072 | $2.021704 Lowest known | All computed |
| 131,072 | $534.288 | $7.231816 Lowest known | All computed |

Vary output; hold input, requests, cache and retries fixed.

| Output tokens | Claude Opus 5.5 | DeepSeek V4.1 Flash |
| --- | --- | --- |
| 128 | $10.56 | $0.17896 |
| 2,048 | $48.96 | $1.27336 |
| 8,192 | $171.84 | $4.77544 |

### Bring your observed evaluation results

JSON is parsed locally. Prompts, filenames, individual responses and extra fields are not retained. Import only aggregate measurements for selected models. Task/version labels do not establish that two evaluations used the same dataset.

 Import private evaluation JSON Expected format [{"model":"provider/exact-model-id","task":"support-answer","version":"rubric-1","attempts":100,"successes":84,"costUsd":2.4,"latencyMs":950}]

Use the exact catalogue ID. Replace the example values with observed measurements. Omit costUsd or latencyMs when they are unknown. No public score is inferred from these observations.

### Keep the decision and its evidence

A portable record retains selected facts, complete tier ladders, public requirements and the publication manifest. It also embeds the full permitted public catalogue to verify the input artifact checksum. Files are larger for this reason (up to 2 MB); local storage is limited to 12 records. Team review is local to this browser; there is no hosted collaboration.

 Owner (private) Review date (private) Recorded choice (private) Retain current: Claude Opus 5.5 DeepSeek V4.1 Flash Rationale (private)
 Include private review fields, scenario and observations in downloaded files Download decision JSON Download decision Markdown
 Store private decision records on this device Save in this browser

Saving is opt-in and includes private review fields. Shared comparison links never include them. Version 1 Check references remain separate and are not overwritten or guessed into this format.

 Import a v2 decision JSON file

#### Saved local decisions · 0

No version 2 decision records are stored in this browser.

## Questions this page answers

 Is Claude Opus 5.5 a better-and-cheaper replacement for DeepSeek V4.1 Flash?

Neither model has both an equal-or-higher measured score and an equal-or-lower estimated price in this pair. Retaining your current model is a valid outcome.

 Which model is higher rated: Claude Opus 5.5 or DeepSeek V4.1 Flash?

Claude Opus 5.5 scores higher on LMArena general (1515.5 ±7.5) compared to DeepSeek V4.1 Flash (1462.5 ±6.3), a margin of 53.0 Elo points. The measured confidence intervals do not overlap, demonstrating a statistically significant preference lead on human evaluations.

 Which model is more cost-effective: Claude Opus 5.5 or DeepSeek V4.1 Flash?

On a standard balanced workload (3 prompt tokens per 1 generated token), DeepSeek V4.1 Flash costs $0.182 (price under confirmation since 2026-10-12) per 1M tokens versus $8.00 for Claude Opus 5.5. Claude Opus 5.5 is approximately 43.9× the price of DeepSeek V4.1 Flash. Base input rates are $4.00 for Claude Opus 5.5 and $0.053 for DeepSeek V4.1 Flash; base output rates are $20.00 for Claude Opus 5.5 and $0.570 for DeepSeek V4.1 Flash.

 How do their context windows and generation limits compare?

Claude Opus 5.5 provides a 1,000,000-token context window with a maximum output limit of 128,000 tokens. DeepSeek V4.1 Flash provides a 1,048,576-token context window with a maximum output of 943,718 tokens.

 What capabilities are lost when switching between Claude Opus 5.5 and DeepSeek V4.1 Flash?

Switching from Claude Opus 5.5 to DeepSeek V4.1 Flash involves: file input is not supported by the candidate. Conversely, moving from DeepSeek V4.1 Flash to Claude Opus 5.5 involves: Context window: 1,048,576 → 1,000,000 tokens; Output limit: 943,718 → 128,000 tokens. Run test suites on your specific prompt templates and tool declarations before cutting over production traffic.

 Can Claude Opus 5.5 or DeepSeek V4.1 Flash be self-hosted or deployed privately?

Both Claude Opus 5.5 and DeepSeek V4.1 Flash are proprietary cloud models offered via managed API endpoints. Claude Opus 5.5 is served by Anthropic and 11 catalogue offers, while DeepSeek V4.1 Flash is served by DeepSeek and 31 catalogue offers.

 What is included in this comparison?

Accepted model capabilities, context and output limits, complete price-tier ladders, independent LMArena measurements and missing evidence. Provider endpoint precision and application success still need verification.

 Can I compare a different workload or keep a decision record?

Yes. Change the public workload, prompt length and requirements in the comparison workspace. Fixed-request scenarios, aggregate evaluations and review notes stay local unless explicitly exported.

## Continue your investigation

 - [Find related models](/families/)
- [Check context tiers](/cliffs/)
- [Use observed usage](/audit/)
- [Understand score differences](/significance/)