Claude Opus 4.5 vs GPT-4.1 Nano
Head to head on 15 shared benchmarks, with price, context window, and release dates.
Benchmark scores
59evals · sort by any column, ⤢ to expand fullscreen
| Model | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Claude Opus 4.5 Anthropic | 62.7% | 61.3% | 1683elo | 73.1 | 20.7% | 81.0% | 13.2% | 43.0% | 73.8% | 88.9% | 68.7% | 47.0% | 74.3% | 40.9% | 86.3% | - | - | - | - | - | 16.7% | - | - | - | 35.6% | 6.1% | - | 84.7% | 12.13 | - | - | 83.8% | 83.5% | 78.1% | 79.7% | 74.4% | 62.5% | 81.3% | 90.4% | 80.1% | - | - | 45.2% | 83.2% | 100.0% | 37.4 | 36.0% | 77.5% | 45.0% | 45.3 | - | 70.7% | 79.2% | 61.8 | - | - | 20.6% | - | - | 62.2% |
| GPT-4.1 Nano OpenAI | 24.0% | 42.1% | 944elo | 32.4 | 1.0% | 51.2% | 3.8% | 32.0% | 32.6% | 65.7% | 52.8% | 25.9% | 60.8% | 3.8% | 17.3% | 8.9% | 23.7% | 10.7% | 1.53 | -0.17 | - | 3.3% | 0.0% | 42.5% | - | - | 0.39 | - | - | 1.46 | 0.0% | - | - | - | - | - | - | - | - | - | 10.8% | 84.8% | - | - | - | - | - | - | - | - | 0.44 | - | - | - | 1.64 | 39.8% | - | 68.0% | 68.0% | 30.9% |
2 / 2 models
| Attribute | Claude Opus 4.5 Anthropic | GPT-4.1 Nano OpenAI |
|---|---|---|
| Description | Claude Opus 4.5 is an AI model from Anthropic. | GPT-4.1 Nano is an AI model from OpenAI. |
| Family | Claude | GPT |
| Params | - | - |
| Open weights | closed | closed |
| License | proprietary | proprietary |
| Released | 24 Nov 2025 | 14 Apr 2025 |
| Context | 200,000 | 1,047,576 |
| Input $/1M | $5.00 | $0.10 |
| Output $/1M | $25.00 | $0.40 |
| Cache read $/1M | $0.500 | $0.025 |
| Cache write $/1M | $6.250 | - |
| Speed | 0 tok/s | 0 tok/s |
| Latency | 0.00 s | 0.00 s |
| Modalities | file, image, text | image, text, file |
| Providers | - | - |
| Publisher | Anthropic | OpenAI |
| Reported scores |
FAQ
- Is Claude Opus 4.5 or GPT-4.1 Nano better?
- Across the 15 benchmarks both models report on Sophon, Claude Opus 4.5 leads on 15 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-4.1 Nano compare on GPQA Diamond?
- Claude Opus 4.5 scores 81.0% and GPT-4.1 Nano scores 51.2% on GPQA Diamond.
- Which is cheaper, Claude Opus 4.5 or GPT-4.1 Nano?
- GPT-4.1 Nano is cheaper at $0.40 per million output tokens against $25.00 for Claude Opus 4.5 - about 62.5x.
- When were Claude Opus 4.5 and GPT-4.1 Nano released?
- Claude Opus 4.5 was released 24 Nov 2025 by Anthropic. GPT-4.1 Nano was released 14 Apr 2025 by OpenAI.
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