# Claude Opus 5.5 vs GPT-5.4 Pro

> Claude Opus 5.5 is the stronger model overall, scoring 68.6 to 58.9 on the Noometry Index.

- Canonical page: https://noometry.com/compare/claude-opus-5-5-vs-gpt-5-4-pro
- Last updated: 2026-10-12
- Shared benchmarks: 8

## Summary

- They share 8 benchmarks with published results for both. Claude Opus 5.5 scores higher in 3 categories and GPT-5.4 Pro in 1 category; 4 gaps are clear of the uncertainty.
- The widest gap is in coding, where Claude Opus 5.5 leads 71.9 to 43.2.
- The biggest single-benchmark swing is FrontierMath Tier 4: 95% for Claude Opus 5.5 and 58.5% for GPT-5.4 Pro.
- Claude Opus 5.5 is cheaper at $4 / $20 per million input/output tokens, against $30 / $180 for GPT-5.4 Pro.
- GPT-5.4 Pro accepts more context: 1.05M tokens versus 1M.

## Snapshot

| | Claude Opus 5.5 | GPT-5.4 Pro |
|---|---|---|
| Provider | Anthropic | OpenAI |
| Noometry Index | 68.6 | 58.9 |
| Rank | 3 | 18 |
| Context | 1M | 1.05M |
| Input $/M | $4 | $30 |
| Output $/M | $20 | $180 |
| Weights | Proprietary | Proprietary |

## Coding

- Claude Opus 5.5: 71.9 (#3)
- GPT-5.4 Pro: 43.2 (#90)

| Benchmark | Claude Opus 5.5 | GPT-5.4 Pro |
|---|---|---|
| FrontierCode | 54.6% | — |
| CursorBench | 57.8% | — |
| LMArena WebDev | 1813 | — |
| FrontierSWE | 62.3% | — |
| SciCode | 66.9% | — |
| WeirdML | — | 57.4% |
| LMArena Coding | 1547 | — |
| MirrorCode | 77.4% | — |
| ALE-Bench | 2,147 | — |

## Agentic & Tool Use

- Claude Opus 5.5: 45.3 (#15)
- GPT-5.4 Pro: —

| Benchmark | Claude Opus 5.5 | GPT-5.4 Pro |
|---|---|---|
| APEX-Agents | 73.5% | — |
| GDP.pdf | 30.6% | — |
| Vending-Bench 2 | 9,235 | — |

## Reasoning

- Claude Opus 5.5: 80.2 (#3)
- GPT-5.4 Pro: 70.7 (#13)

| Benchmark | Claude Opus 5.5 | GPT-5.4 Pro |
|---|---|---|
| ARC-AGI-2 | 93.3% | 83.3% |
| ARC-AGI-1 | 98.5% | 94.5% |
| CritPt | 31.7% | 30% |
| Epoch Capabilities Index | 167.33 | 158.93 |
| SimpleBench | — | 74.1% |
| NYT Connections (extended) | 88.5% | — |
| Chess Puzzles | — | 58.6% |
| EnigmaEval | — | 23.8% |
| EBR-Bench | 71.4% | — |
| LMArena Hard Prompts | 1535 | — |
| Mystery Game Puzzles | 71% | — |
| DTBench | 98.9% | — |
| LMCA | 68.2% | — |

## Math

- Claude Opus 5.5: 91.8 (#3)
- GPT-5.4 Pro: 72.4 (#22)

| Benchmark | Claude Opus 5.5 | GPT-5.4 Pro |
|---|---|---|
| FrontierMath (Tiers 1-3) | 91.2% | 82.5% |
| FrontierMath Tier 4 | 95% | 58.5% |
| OTIS Mock AIME 2024-2025 | 100% | — |
| ProofBench | 100% | — |
| LMArena Math | 1506 | — |
| FrontierMath (Feb 2025 set) | — | 50% |
| FrontierMath Erdős | 2.9% | — |
| FrontierMath Tier 4 (v1) | — | 37.5% |

## Knowledge

- Claude Opus 5.5: 66.4 (#10)
- GPT-5.4 Pro: 68.3 (#7)

| Benchmark | Claude Opus 5.5 | GPT-5.4 Pro |
|---|---|---|
| GPQA Diamond | 90.6% | 94.6% |
| SimpleQA Verified | 72.2% | 46.3% |
| Humanity's Last Exam | — | 44.3% |
| Vectara Hallucination Rate | — | 8.3% |
| LMArena Expert | 1547 | — |

## Multimodal

- Claude Opus 5.5: 57.8 (#1)
- GPT-5.4 Pro: —

| Benchmark | Claude Opus 5.5 | GPT-5.4 Pro |
|---|---|---|
| LMArena Vision | 1321 | — |
| Blueprint-Bench 2 | 51.2% | — |
| Furniture Assembly | 83.3% | — |

## Multilingual

- Claude Opus 5.5: 59.1 (#2)
- GPT-5.4 Pro: —

| Benchmark | Claude Opus 5.5 | GPT-5.4 Pro |
|---|---|---|
| LMArena Non-English | 1507 | — |
| LMArena Chinese | 1588 | — |
| LMArena French | 1514 | — |
| LMArena Russian | 1520 | — |
| LMArena Spanish | 1507 | — |

## Instruction Following

- Claude Opus 5.5: 80.0 (#3)
- GPT-5.4 Pro: —

| Benchmark | Claude Opus 5.5 | GPT-5.4 Pro |
|---|---|---|
| LMArena Instruction Following | 1537 | — |

## Long Context

- Claude Opus 5.5: 47.1 (#19)
- GPT-5.4 Pro: —

| Benchmark | Claude Opus 5.5 | GPT-5.4 Pro |
|---|---|---|
| LMArena Longer Query | 1532 | — |

## Writing & Preference

- Claude Opus 5.5: 78.2 (#3)
- GPT-5.4 Pro: —

| Benchmark | Claude Opus 5.5 | GPT-5.4 Pro |
|---|---|---|
| LMArena Text | 1515 | — |
| LMArena Creative Writing | 1533 | — |
| EQ-Bench Creative Writing | 2050 | — |
| LMArena Multi-Turn | 1499 | — |

## FAQ

### Is Claude Opus 5.5 better than GPT-5.4 Pro?

Claude Opus 5.5 is the stronger model overall, scoring 68.6 to 58.9 on the Noometry Index.

### Which is cheaper, Claude Opus 5.5 or GPT-5.4 Pro?

Claude Opus 5.5 is cheaper. It lists at $4 per million input tokens and $20 per million output tokens; GPT-5.4 Pro lists at $30 and $180.

### Is Claude Opus 5.5 or GPT-5.4 Pro better for coding?

Claude Opus 5.5 scores higher on coding benchmarks: 71.9 versus 43.2 in the Noometry coding category.

### Which has the bigger context window?

GPT-5.4 Pro does, with 1.05M tokens against 1M.

### How many benchmarks do Claude Opus 5.5 and GPT-5.4 Pro share?

8 benchmarks have published results for both models. Claude Opus 5.5 has 44 scored results on Noometry and GPT-5.4 Pro has 16.