---
title: "OpenAI: GPT-5.5 — price, capability and what beats it · Undominated.ai"
canonical: https://undominated.ai/models/openai__gpt-5.5/
description: "OpenAI: GPT-5.5: $5.00/M in, $30.00/M out. Independent capability scores, context-tier pricing, and the models that are both better and cheaper."
---

# OpenAI: GPT-5.5 — price, capability and what beats it · Undominated.ai

> OpenAI: GPT-5.5: $5.00/M in, $30.00/M out. Independent capability scores, context-tier pricing, and the models that are both better and cheaper.

[Leaderboard](/) / OpenAI

# GPT-5.5

OpenAI · released 2026-04-24 · proprietary

 $11.25 per million tokens, balanced Balanced Summarise Chat Code gen Agentic

## GPT-5.6 Sol is both better and cheaper.

It scores **+4.6** higher and costs **64% less** ($4.00/M against $11.25/M) on this workload — and it does everything this model does.

[Grok 4.6](/models/x-ai__grok-4.6) is cheaper still (73% less) but drops 1.1M → 500K context.

The same model via **batch** is 50% cheaper ($5.63/M) — same weights, different latency.

### Every price dimension

| Input | $5.00 /M |
| --- | --- |
| Output | $30.00 /M |
| Cached input | $0.500 /M |
| Web search | $0.01 /call |
| Batch discount | 50% |

**Past 272,000 tokens the price changes.** Input goes to $10.00/M (2×) and output to $45.00/M. The headline rate does not apply to a long-context workload.

### Independent scores

| Intelligence | 56.3 |
| --- | --- |
| Coding | 74.9 |
| Agentic | 47.4 |
| LMArena Elo | 1470.9 high |

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

 - svg #7 of 98 1274
- agenticslides #7 of 16 1150
- agenticslides(python-pptx) #7 of 16 1155
- pptxslides #7 of 14 1157
- gamedev #8 of 144 1337
- agentichtmlslides #9 of 16 1084
- agenticslides(html) #9 of 16 1077
- asciiart #10 of 83 1282

### Capability

| Context window | 1.1M |
| --- | --- |
| Max output | 128K |
| Input modes | file, image, text |
| Tool use | yes |
| Reasoning | optional |
| Knowledge cutoff | 2025-12-01 |
| Open weights | no |

### Provenance

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

GPT-5.5 is OpenAI’s frontier model designed for complex professional workloads, building on GPT-5.4 with stronger reasoning, higher reliability, and improved token efficiency on hard tasks. It features a 1M+ token...