Claude Opus 4.5 vs GPT-5.4
Head to head on 28 shared benchmarks, with price, context window, and release dates.
Benchmark scores
52evals · sort by any column, ⤢ to expand fullscreen
| Model | |||||||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Claude Opus 4.5 Anthropic | 61.3% | 35.6% | 6.1% | 1683elo | 73.1 | 20.7% | 84.7% | 81.0% | 13.2% | 43.0% | 83.5% | 78.1% | 79.7% | 74.4% | 62.5% | 81.3% | 90.4% | 80.1% | 45.2% | 83.2% | 68.7% | 36.0% | 45.0% | 47.0% | 74.3% | 40.9% | 20.6% | 86.3% | 62.7% | - | 16.7% | - | - | - | 12.13 | 83.8% | - | 73.8% | - | 88.9% | - | 100.0% | 37.4 | - | 77.5% | 45.3 | - | - | 70.7% | 79.2% | 61.8 | - | 62.2% |
| GPT-5.4 OpenAI | 65.3% | 34.1% | 9.0% | 1836elo | 78.3 | 47.6% | 87.2% | 74.8% | 11.3% | 48.4% | 78.5% | 82.0% | 77.5% | 79.3% | 70.2% | 82.6% | 94.1% | 88.1% | 41.3% | 77.5% | 68.3% | 56.0% | 43.3% | 47.1% | 74.0% | 37.9% | 67.4% | 36.0% | - | 13.1% | - | 1.47 | 81.0% | 1272elo | - | - | 92063 | - | 82.8% | - | 86 | - | - | 52.2% | - | - | -0.61 | 40.8 | - | - | - | 80 | 60.3% |
2 / 2 models
| Attribute | Claude Opus 4.5 Anthropic | GPT-5.4 OpenAI |
|---|---|---|
| Description | Claude Opus 4.5 is an AI model from Anthropic. | GPT-5.4 is an AI model from OpenAI. |
| Family | Claude | GPT |
| Params | - | - |
| Open weights | closed | closed |
| License | proprietary | proprietary |
| Released | 24 Nov 2025 | 5 Mar 2026 |
| Context | 200,000 | 1,050,000 |
| Input $/1M | $5.00 | $2.50 |
| Output $/1M | $25.00 | $15.00 |
| Cache read $/1M | $0.500 | $0.250 |
| Cache write $/1M | $6.250 | - |
| Speed | 0 tok/s | 0 tok/s |
| Latency | 0.00 s | 0.00 s |
| Modalities | file, image, text | text, image, file |
| Providers | - | - |
| Publisher | Anthropic | OpenAI |
| Reported scores | GPQA Diamond74.8% (AA) SciCode47.1% (AA) τ²-bench (Tau²-bench)36.0% (AA) Terminal-Bench (Hard)37.9% (AA) Vibe Code Bench v1.167.4% |
FAQ
- Is Claude Opus 4.5 or GPT-5.4 better?
- Across the 28 benchmarks both models report on Sophon, GPT-5.4 leads on 16 of them. Which one is "better" depends on the benchmark - the table above shows every shared score.
- How do Claude Opus 4.5 and GPT-5.4 compare on GPQA Diamond?
- Claude Opus 4.5 scores 81.0% and GPT-5.4 scores 74.8% on GPQA Diamond.
- Which is cheaper, Claude Opus 4.5 or GPT-5.4?
- GPT-5.4 is cheaper at $15.00 per million output tokens against $25.00 for Claude Opus 4.5 - about 1.7x.
- When were Claude Opus 4.5 and GPT-5.4 released?
- Claude Opus 4.5 was released 24 Nov 2025 by Anthropic. GPT-5.4 was released 5 Mar 2026 by OpenAI.
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