Claude Opus 4.5 vs GPT-5
Head to head on 23 shared benchmarks, with price, context window, and release dates.
Benchmark scores
80evals · sort by any column, ⤢ to expand fullscreen
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| Claude Opus 4.5 Anthropic | 62.7% | 61.3% | 1683elo | 73.1 | 20.7% | 84.7% | 81.0% | 13.2% | 43.0% | 83.5% | 73.8% | 45.2% | 83.2% | 88.9% | 68.7% | 36.0% | 45.0% | 47.0% | 79.2% | 74.3% | 40.9% | 20.6% | 86.3% | - | - | - | - | - | - | - | 16.7% | - | - | 35.6% | 6.1% | - | - | - | - | - | - | - | 12.13 | - | 83.8% | - | 78.1% | 79.7% | 74.4% | 62.5% | 81.3% | 90.4% | 80.1% | - | - | - | - | - | - | - | - | - | - | - | - | - | 100.0% | 37.4 | - | 77.5% | 45.3 | - | 70.7% | - | 61.8 | - | - | - | - | - | 62.2% |
| GPT-5 OpenAI | 48.3% | 61.1% | 1623elo | 72.8 | 32.4% | 83.3% | 68.6% | 6.6% | 45.0% | 83.4% | 54.3% | 49.6% | 83.7% | 82.0% | 65.5% | 18.0% | 43.7% | 37.8% | 74.4% | 73.4% | 12.9% | 20.1% | 0.0% | 46.7% | 91.1% | 88.0% | 94.6% | 0.0% | 0.15 | 0.0% | - | 68.1% | 4.58 | - | - | 57.7% | 80.0% | 80.0% | 91.7% | 0.0% | 88.9% | 100.0% | - | 48.9% | - | 58.2% | - | - | - | - | - | - | - | 37.5% | 0.52 | 1.62 | 100.0% | 86.1% | 0.0% | 92.7% | 92.7% | 93.3% | 10.0% | 0.0% | 60.0% | 0.26 | - | - | 0.0% | - | - | 74.9% | - | 2.34 | - | 87.5% | 0.86 | 54.8% | 90.0% | 90.0% | 56.7% |
2 / 2 models
| Attribute | Claude Opus 4.5 Anthropic | GPT-5 OpenAI |
|---|---|---|
| Description | Claude Opus 4.5 is an AI model from Anthropic. | OpenAI's August 2025 unified frontier model that auto-routes between a fast model and a deeper "thinking" variant. |
| Family | Claude | GPT 5 |
| Params | - | Undisclosed (closed) |
| Open weights | closed | closed |
| License | proprietary | Proprietary |
| Released | 24 Nov 2025 | 7 Aug 2025 |
| Context | 200,000 | 400,000 |
| Input $/1M | $5.00 | - |
| Output $/1M | $25.00 | - |
| Cache read $/1M | $0.500 | $0.125 |
| 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 | - | openai |
| Publisher | Anthropic | OpenAI |
| Reported scores |
FAQ
- Is Claude Opus 4.5 or GPT-5 better?
- Across the 23 benchmarks both models report on Sophon, Claude Opus 4.5 leads on 19 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 compare on GPQA Diamond?
- Claude Opus 4.5 scores 81.0% and GPT-5 scores 68.6% on GPQA Diamond.
- When were Claude Opus 4.5 and GPT-5 released?
- Claude Opus 4.5 was released 24 Nov 2025 by Anthropic. GPT-5 was released 7 Aug 2025 by OpenAI.
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