Claude 4 Sonnet vs GPT-5 Nano
Head to head on 25 shared benchmarks, with price, context window, and release dates.
Benchmark scores
64evals · sort by any column, ⤢ to expand fullscreen
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| Claude 4 Sonnet Anthropic | 38.0% | 19.8% | 1480elo | 58.4 | 68.3% | 4.3% | 45.4% | 64.8% | 77.5% | 54.6% | 44.3% | 72.9% | 70.5% | 69.0% | 44.9% | 33.9% | 72.4% | 83.7% | 62.5% | 35.0% | 37.3% | 74.6% | 69.6% | 27.3% | 52.3% | - | 40.7% | - | 22.9% | - | 47.8% | - | 54.7% | - | - | - | 67.5% | - | - | - | - | - | 93.4% | - | 86.7% | - | - | 43.9% | - | - | 6.18 | 6.18 | - | 58.3% | 35.6% | - | 0.59 | - | - | 84.0% | 84.0% | - | - | - | 55.5% |
| GPT-5 Nano OpenAI | 27.3% | 10.0% | 703elo | 28 | 42.8% | 4.0% | 32.5% | 52.8% | 62.4% | 43.4% | 55.7% | 46.8% | 68.4% | 40.3% | 47.0% | 30.4% | 72.9% | 55.6% | 53.6% | 30.4% | 29.1% | 34.8% | 67.4% | 6.8% | 25.7% | 0.0% | - | 0.25 | - | 0.21 | - | 6.7% | - | 78.2% | 8.3% | 1.18 | - | 100.0% | 1.38 | 1.38 | 100.0% | 100.0% | - | 26.7% | - | 100.0% | 0.0% | - | 0.0% | 12.0% | - | - | 1.72 | - | - | 29.7% | - | 20.41 | -6.67 | - | - | 82.0% | 82.0% | 40.0% | 43.7% |
2 / 2 models
| Attribute | Claude 4 Sonnet Anthropic | GPT-5 Nano OpenAI |
|---|---|---|
| Description | Claude 4 Sonnet is an AI model from Anthropic. | GPT-5 nano is an AI model from OpenAI. |
| Family | Claude | GPT |
| Params | - | - |
| Open weights | closed | closed |
| License | proprietary | proprietary |
| Released | 22 May 2025 | 7 Aug 2025 |
| Context | 200,000 | 400,000 |
| Input $/1M | $3.00 | $0.05 |
| Output $/1M | $15.00 | $0.40 |
| Cache read $/1M | - | $0.005 |
| Cache write $/1M | - | - |
| Speed | 0 tok/s | 0 tok/s |
| Latency | 0.00 s | 0.00 s |
| Modalities | text, image | text, image, file |
| Providers | - | - |
| Publisher | Anthropic | OpenAI |
| Reported scores |
FAQ
- Is Claude 4 Sonnet or GPT-5 Nano better?
- Across the 25 benchmarks both models report on Sophon, Claude 4 Sonnet leads on 22 of them. Which one is "better" depends on the benchmark - the table above shows every shared score.
- How do Claude 4 Sonnet and GPT-5 Nano compare on GPQA Diamond?
- Claude 4 Sonnet scores 68.3% and GPT-5 Nano scores 42.8% on GPQA Diamond.
- Which is cheaper, Claude 4 Sonnet or GPT-5 Nano?
- GPT-5 Nano is cheaper at $0.40 per million output tokens against $15.00 for Claude 4 Sonnet - about 37.5x.
- When were Claude 4 Sonnet and GPT-5 Nano released?
- Claude 4 Sonnet was released 22 May 2025 by Anthropic. GPT-5 Nano was released 7 Aug 2025 by OpenAI.
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