Claude Opus 4.6 vs GPT-5 Nano
Head to head on 23 shared benchmarks, with price, context window, and release dates.
Benchmark scores
65evals · sort by any column, ⤢ to expand fullscreen
| Model | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Claude Opus 4.6 Anthropic | 1804elo | 77.7 | 40.7% | 84.0% | 19.1% | 44.6% | 78.8% | 78.2% | 69.9% | 63.3% | 83.3% | 89.3% | 88.7% | 48.2% | 86.7% | 68.5% | 50.0% | 51.6% | 45.7% | 75.6% | 76.0% | 48.5% | 84.8% | - | - | 99.79 | 56.1% | 1.5 | - | - | - | 2.08 | 67.0% | 71.0% | - | 1223elo | - | - | - | 84.9% | 88771 | 58 | - | - | - | - | - | 78.5% | - | - | - | 93 | - | - | 44.5 | - | 72.0% | 80.6 | - | - | - | 57.6% | - | - | - | 66.5% |
| GPT-5 Nano OpenAI | 703elo | 28 | 8.3% | 42.8% | 4.0% | 32.5% | 52.8% | 62.4% | 43.4% | 55.7% | 46.8% | 68.4% | 40.3% | 30.4% | 72.9% | 53.6% | 12.0% | 30.4% | 29.1% | 34.8% | 67.4% | 6.8% | 25.7% | 0.0% | 27.3% | - | - | - | 0.25 | 0.21 | 6.7% | - | - | - | 10.0% | - | 78.2% | 1.18 | 100.0% | - | - | - | 47.0% | 1.38 | 1.38 | 100.0% | 100.0% | - | 26.7% | 55.6% | 100.0% | - | 0.0% | 0.0% | - | 1.72 | - | - | 29.7% | 20.41 | -6.67 | - | 82.0% | 82.0% | 40.0% | 43.7% |
2 / 2 models
| Attribute | Claude Opus 4.6 Anthropic | GPT-5 Nano OpenAI |
|---|---|---|
| Description | Claude Opus 4.6 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 | 5 Feb 2026 | 7 Aug 2025 |
| Context | 1,000,000 | 400,000 |
| Input $/1M | $5.00 | $0.05 |
| Output $/1M | $25.00 | $0.40 |
| Cache read $/1M | $0.500 | $0.005 |
| Cache write $/1M | $6.250 | - |
| Speed | 0 tok/s | 0 tok/s |
| Latency | 0.00 s | 0.00 s |
| Modalities | text, image, file | text, image, file |
| Providers | - | - |
| Publisher | Anthropic | OpenAI |
| Reported scores | GPQA Diamond84.0% (AA) Humanity's Last Exam (HLE)19.1% (AA) SciCode45.7% (AA) τ²-bench (Tau²-bench)84.8% (AA) Terminal-Bench (Hard)48.5% (AA) |
FAQ
- Is Claude Opus 4.6 or GPT-5 Nano better?
- Across the 23 benchmarks both models report on Sophon, Claude Opus 4.6 leads on 23 of them. Which one is "better" depends on the benchmark - the table above shows every shared score.
- How do Claude Opus 4.6 and GPT-5 Nano compare on GPQA Diamond?
- Claude Opus 4.6 scores 84.0% and GPT-5 Nano scores 42.8% on GPQA Diamond.
- Which is cheaper, Claude Opus 4.6 or GPT-5 Nano?
- GPT-5 Nano is cheaper at $0.40 per million output tokens against $25.00 for Claude Opus 4.6 - about 62.5x.
- When were Claude Opus 4.6 and GPT-5 Nano released?
- Claude Opus 4.6 was released 5 Feb 2026 by Anthropic. GPT-5 Nano was released 7 Aug 2025 by OpenAI.
Comparing something else? Build your own side-by-side.