Claude Sonnet 4.5 vs GPT-4.1
Head to head on 19 shared benchmarks, with price, context window, and release dates.
Benchmark scores
101evals · sort by any column, ⤢ to expand fullscreen
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| GPT-4.1 OpenAI | 34.7% | 63.1% | 1417elo | 5.5% | 60.9% | 66.6% | 4.2% | 43.0% | 45.7% | 0.49 | 0.49 | 91.3% | 80.6% | 65.9% | 38.1% | 39.6% | 75.1% | 13.6% | 47.1% | - | 0.0% | - | 52.4% | 43.7% | - | - | 26.7% | - | 61.5% | - | - | 1.64 | - | 83.7% | 1.55 | - | - | 12.4% | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 70.8% | - | 32.1% | 32.1% | - | 69.4% | - | - | 50.5% | - | - | - | - | - | - | - | - | - | - | - | - | 8.57 | - | - | - | - | - | - | 31.1% | - | 10.0% | - | - | - | - | - | - | 92.0% | 92.0% | - | 48.0% |
| Claude Sonnet 4.5 Anthropic | 37.0% | 60.8% | 1675elo | 15.2% | 83.9% | 72.7% | 7.2% | 42.7% | 59.0% | 0.75 | 0.75 | 0.0% | 86.0% | 64.0% | 42.8% | 74.8% | 73.3% | 28.8% | 70.5% | 0.0% | - | 0.0% | - | - | 100 | 0.0% | - | 0.0% | - | 0.0% | 5.0% | - | 0.0% | - | - | 0.0% | 0.0% | - | 0.0% | 0.0% | 71.4 | 0.0% | 0.0% | 0.0% | 0.0% | 0.0% | 0.0% | 0.0% | 0.0% | 0.0% | 87.5% | 83.8% | 0.0% | 0.0% | 70.7% | 80.4% | 57.0% | 53.4% | 76.5% | 79.3% | 77.6% | - | 0 | - | - | 40.6% | - | 84.5% | 0 | - | 0.0% | 0.0% | 62.9% | 0.0% | 0.0% | 19.0% | 0.0% | 0.0% | 0.0% | 0.0% | 0.0% | 32.9% | - | 0.0% | 0 | 0.0% | 0.0% | 77.2% | 67.0% | - | 0.0% | - | 0 | 0 | 50.34 | 0 | 22.6% | 0.0% | - | - | 1.49 | 27.5% |
2 / 2 models
| Attribute | Claude Sonnet 4.5 Anthropic | GPT-4.1 OpenAI |
|---|---|---|
| Description | anthropic/claude-sonnet-4.5 is an AI model. | GPT-4.1 is an AI model from OpenAI. |
| Family | Claude | GPT |
| Params | Undisclosed (closed) | - |
| Open weights | closed | closed |
| License | Proprietary | proprietary |
| Released | 29 Sep 2025 | 14 Apr 2025 |
| Context | 1,000,000 | 1,047,576 |
| Input $/1M | $3.00 | $2.00 |
| Output $/1M | $15.00 | $8.00 |
| Cache read $/1M | $0.300 | $0.500 |
| Cache write $/1M | $3.750 | - |
| Speed | 0 tok/s | 0 tok/s |
| Latency | 0.00 s | 0.00 s |
| Modalities | text, image, file | image, text, file |
| Providers | anthropic, aws-bedrock, vertex-ai | - |
| Publisher | Anthropic | OpenAI |
| Reported scores | TaxEval v273.3% LiveBench - Math79.3% (LiveBench) LiveBench - Coding80.4% (LiveBench) LiveBench - Language76.5% (LiveBench) LiveBench - Data Analysis57.0% (LiveBench) | ScholarSearch8.57 Social Sciences & Humanities (%) GPQA Diamond66.6% (AA) Humanity's Last Exam (HLE)4.2% (AA) IFBench43.0% (AA) |
FAQ
- Is Claude Sonnet 4.5 or GPT-4.1 better?
- Across the 19 benchmarks both models report on Sophon, Claude Sonnet 4.5 leads on 14 of them. Which one is "better" depends on the benchmark - the table above shows every shared score.
- How do Claude Sonnet 4.5 and GPT-4.1 compare on GPQA Diamond?
- Claude Sonnet 4.5 scores 72.7% and GPT-4.1 scores 66.6% on GPQA Diamond.
- Which is cheaper, Claude Sonnet 4.5 or GPT-4.1?
- GPT-4.1 is cheaper at $8.00 per million output tokens against $15.00 for Claude Sonnet 4.5 - about 1.9x.
- When were Claude Sonnet 4.5 and GPT-4.1 released?
- Claude Sonnet 4.5 was released 29 Sep 2025 by Anthropic. GPT-4.1 was released 14 Apr 2025 by OpenAI.
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