---
title: "Anthropic: Claude Sonnet 4.5 — price, capability and what beats it · Undominated.ai"
canonical: https://undominated.ai/models/anthropic__claude-sonnet-4.5/
description: "Anthropic: Claude Sonnet 4.5: $3.00/M in, $15.00/M out. Independent capability scores, context-tier pricing, and the models that are both better and cheaper."
---

# Anthropic: Claude Sonnet 4.5 — price, capability and what beats it · Undominated.ai

> Anthropic: Claude Sonnet 4.5: $3.00/M in, $15.00/M out. Independent capability scores, context-tier pricing, and the models that are both better and cheaper.

[Leaderboard](/) / Anthropic

# Claude Sonnet 4.5

Anthropic · released 2025-09-29 · proprietary

 $6.00 per million tokens, balanced Balanced Summarise Chat Code gen Agentic

## Gemini 3.7 Flash is both better and cheaper.

It scores **+18.6** higher and costs **88% less** ($0.750/M against $6.00/M) on this workload — and it does everything this model does.

[GLM 5.3](/models/z-ai__glm-5.3) is cheaper still (64% less) but drops no image, file input.

The same model via **batch** is 50% cheaper ($3.00/M) — same weights, different latency.

### Every price dimension

| Input | $3.00 /M |
| --- | --- |
| Output | $15.00 /M |
| Cached input | $0.300 /M |
| Cache write | $3.75 /M |
| Cache write 1h | $6.00 /M |
| Web search | $0.01 /call |
| Batch discount | 50% |

### Independent scores

| Intelligence | 37.4 |
| --- | --- |
| Coding | 52.1 |
| Agentic | 26.4 |

Sources are listed separately rather than averaged. Across the 62 models both have scored they correlate at r = 0.806 — close agreement overall, but four models rank very differently between them, and a blended score would hide exactly those.

#### Best rankings by task

 - asciiart #17 of 83 1232
- mobileapps #26 of 56 1187
- fullstack #31 of 59 1084
- webapps #31 of 56 1097

### Capability

| Context window | 1M |
| --- | --- |
| Max output | 64K |
| Input modes | text, image, file |
| Tool use | yes |
| Reasoning | optional |
| Knowledge cutoff | 2025-01-31 |
| Open weights | no |

### Provenance

| Price source | openrouter.ai |
| --- | --- |
| Fetched | 2026-08-24 |
| Quality data | verified |
| Cross-checked | vendor page |

Claude Sonnet 4.5 is Anthropic’s most advanced Sonnet model to date, optimized for real-world agents and coding workflows. It delivers state-of-the-art performance on coding benchmarks such as SWE-bench Verified, with...