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 | 1809elo | 77.7 | 40.7% | 89.6% | 39.9% | 53.1% | 78.8% | 78.2% | 69.9% | 63.3% | 83.3% | 89.3% | 88.7% | 48.2% | 86.7% | 68.5% | 50.0% | 51.6% | 51.9% | 75.6% | 76.0% | 46.2% | 92.1% | - | - | 99.79 | 56.1% | 1.5 | - | - | - | 2.08 | 67.0% | 69.0% | - | 1223elo | - | - | - | 84.9% | 88771 | 58 | - | - | - | - | - | 78.5% | - | - | - | 93 | - | - | 44.5 | - | 72.0% | 80.6 | - | - | - | 57.6% | - | - | - | 68.1% |
| GPT-5 Nano OpenAI | 705elo | 28 | 8.3% | 67.6% | 9.5% | 67.6% | 52.8% | 62.4% | 43.4% | 55.7% | 46.8% | 68.4% | 40.3% | 30.4% | 72.9% | 53.6% | 12.0% | 30.4% | 36.6% | 34.8% | 67.4% | 12.1% | 36.5% | 0.0% | 83.7% | - | - | - | 0.25 | 0.21 | 6.7% | - | - | - | 10.0% | - | 78.2% | 1.18 | 100.0% | - | - | - | 78.9% | 1.38 | 1.38 | 100.0% | 100.0% | - | 26.7% | 78.0% | 100.0% | - | 0.0% | 0.0% | - | 1.72 | - | - | 29.7% | 20.41 | -6.67 | - | 82.0% | 82.0% | 40.0% | 48.9% |
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 Diamond89.6% (AA) Humanity's Last Exam (HLE)39.9% (AA) SciCode51.9% (AA) τ²-bench (Tau²-bench)92.1% (AA) Terminal-Bench (Hard)46.2% (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 22 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 89.6% and GPT-5 Nano scores 67.6% 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.
Other head-to-heads
56GPT-5 Mini vs GPT-5 Nano38 shared evalsClaude Opus 4.6 vs GPT-5.433 shared evalsClaude Sonnet 4.5 vs GPT-5 Nano31 shared evalsClaude Opus 4.6 vs Gemini 3.1 Pro Preview31 shared evalsClaude Opus 4.6 vs Kimi K2.531 shared evalsClaude Opus 4.6 vs GPT-5.230 shared evalsClaude Opus 4.6 vs Claude Opus 4.729 shared evalsClaude Opus 4.6 vs Claude Sonnet 4.528 shared evalsClaude Opus 4.6 vs GPT-5 Mini28 shared evalsGPT-5 vs GPT-5 Nano28 shared evalsClaude Opus 4.6 vs GPT-5.528 shared evalsClaude Opus 4.6 vs Claude Opus 4.828 shared evalsClaude Opus 4.5 vs Claude Opus 4.628 shared evalsClaude Opus 4.6 vs Claude Sonnet 4.628 shared evalsClaude Opus 4.6 vs GLM 5.127 shared evalsGPT-4.1 Mini vs GPT-5 Nano26 shared evalsGPT-5 Nano vs GPT-5.226 shared evalsClaude Opus 4.5 vs GPT-5 Nano26 shared evalsClaude Fable 5 vs Claude Opus 4.626 shared evalsClaude Opus 4.6 vs DeepSeek V3.226 shared evalsClaude 4 Sonnet vs GPT-5 Nano25 shared evalsClaude Opus 4.6 vs Grok 4.1 Fast25 shared evalsClaude Opus 4.6 vs GPT-5.4 Mini25 shared evalsGemini 2.5 Pro vs GPT-5 Nano24 shared evalsGPT-5 Nano vs Grok 4.1 Fast24 shared evalsClaude Opus 4.6 vs Qwen3.6 Plus24 shared evalsGPT-5 Nano vs GPT-5.523 shared evalsGLM 4.7 vs GPT-5 Nano23 shared evalsGemini 3.1 Pro Preview vs GPT-5 Nano22 shared evalsClaude Opus 4.8 vs GPT-5 Nano22 shared evalsGPT-5 Nano vs GPT-5.422 shared evalsGPT-5 Nano vs Kimi K2.522 shared evalsClaude Opus 4.7 vs GPT-5 Nano22 shared evalsDeepSeek V3.2 vs GPT-5 Nano22 shared evalsGPT-4.1 Nano vs GPT-5 Nano22 shared evalsGPT-5 Nano vs gpt-oss-120b22 shared evalsClaude 4 Sonnet vs Claude Opus 4.622 shared evalsClaude Fable 5 vs GPT-5 Nano21 shared evalsGLM 5.1 vs GPT-5 Nano21 shared evalsClaude Opus 4.6 vs Gemini 2.5 Pro21 shared evalsClaude Opus 4.6 vs GLM 4.721 shared evalsGPT-4.1 vs GPT-5 Nano20 shared evalsClaude Sonnet 4.6 vs GPT-5 Nano20 shared evalsGPT-5.4 Mini vs GPT-5 Nano20 shared evalsClaude Opus 4.6 vs GPT-519 shared evalsGPT-5 Nano vs Qwen3.6 Plus19 shared evalsClaude Opus 4.6 vs gpt-oss-120b19 shared evalsGPT-4o vs GPT-5 Nano18 shared evalsGPT-4o-mini vs GPT-5 Nano16 shared evalsClaude Opus 4.6 vs GPT-4o15 shared evalsClaude Opus 4.6 vs GPT-4.1 Mini13 shared evalsClaude Opus 4.6 vs GPT-4.113 shared evalsClaude Opus 4.6 vs GPT-6 Astra13 shared evalsClaude Opus 4.6 vs GPT-4o-mini12 shared evalsClaude Opus 4.6 vs GPT-4.1 Nano12 shared evalsGPT-5 Nano vs GPT-6 Astra10 shared evals
Comparing something else? Build your own side-by-side.