Claude Sonnet 4.5 vs GPT-5 Mini
Head to head on 31 shared benchmarks, with price, context window, and release dates.
Benchmark scores
116evals · sort by any column, ⤢ to expand fullscreen
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| GPT-5 Mini OpenAI | 90.7% | 60.2% | 1313elo | 56.2 | 27.2% | 82.8% | 21.5% | 75.4% | 69.1% | 68.2% | 55.2% | 65.3% | 75.5% | 82.2% | 68.3% | 83.8% | 1.54 | 1.54 | 43.0% | 80.6% | 83.7% | 66.9% | 9.0% | 43.0% | 39.0% | 39.7% | 59.8% | 75.2% | 33.3% | 14.2% | 68.4% | - | - | 0.0% | - | - | - | 0.0% | - | 1.13 | - | 0.0% | -0.15 | 20.0% | 25.0% | - | 40.0% | 1.7 | - | - | 100.0% | 18.1% | 2.8% | 100.0% | 66.7% | - | - | - | - | 0.0% | 88.3% | - | 60.0% | - | - | 100.0% | - | - | - | 90.0% | - | - | 47.2% | - | 80.0% | - | - | - | 0.0% | - | - | - | 80.0% | - | - | - | - | - | - | - | - | - | - | - | 16.8% | 4.95 | - | - | - | - | - | - | - | - | 0.0% | 9.5% | 0.0% | - | 86.1% | 0.49 | 39.21 | 272.11 | - | 86.0% | 86.0% | - | 51.6% |
| Claude Sonnet 4.5 Anthropic | 88.0% | 60.8% | 1678elo | 71.4 | 15.2% | 83.4% | 17.8% | 57.3% | 70.7% | 80.4% | 57.0% | 53.4% | 76.5% | 79.3% | 77.6% | 71.4% | 0.75 | 0.75 | 40.6% | 84.5% | 87.5% | 64.0% | 19.0% | 32.9% | 45.7% | 67.0% | 74.8% | 73.3% | 35.6% | 22.6% | 78.1% | 0.0% | 0.0% | - | 100 | 0.0% | 0.0% | - | 0.0% | - | 5.0% | - | - | - | - | 0.0% | - | - | 0.0% | 0.0% | - | - | - | - | - | 0.0% | 0.0% | 0.0% | 0.0% | - | - | 0.0% | - | 0.0% | 83.9% | - | 0.0% | 0.0% | 0.0% | - | 0.0% | 0.0% | - | 87.5% | - | 83.8% | 0.0% | 0.0% | - | 0.0% | 0 | 0 | - | 0.0% | 0.0% | 62.9% | 0.0% | 0.0% | 0.0% | 0.0% | 0.0% | 0.0% | 0.0% | 0.0% | - | - | 0 | 0.0% | 0.0% | 77.2% | 0.0% | 0 | 0 | 50.34 | - | - | - | 0 | - | - | - | - | 0.0% | - | - | 1.49 | 29.2% |
2 / 2 models
| Attribute | Claude Sonnet 4.5 Anthropic | GPT-5 Mini OpenAI |
|---|---|---|
| Description | anthropic/claude-sonnet-4.5 is an AI model. | GPT-5 mini is an AI model from OpenAI. |
| Family | Claude | GPT |
| Params | Undisclosed (closed) | - |
| Open weights | closed | closed |
| License | proprietary | proprietary |
| Released | 29 Sep 2025 | 7 Aug 2025 |
| Context | 1,000,000 | 400,000 |
| Input $/1M | $3.00 | $0.25 |
| Output $/1M | $15.00 | $2.00 |
| Cache read $/1M | $0.300 | $0.025 |
| Cache write $/1M | $3.750 | - |
| Speed | 0 tok/s | 0 tok/s |
| Latency | 0.00 s | 0.00 s |
| Modalities | text, image, file | text, image, 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) |
FAQ
- Is Claude Sonnet 4.5 or GPT-5 Mini better?
- Across the 31 benchmarks both models report on Sophon, Claude Sonnet 4.5 leads on 18 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-5 Mini compare on GPQA Diamond?
- Claude Sonnet 4.5 scores 83.4% and GPT-5 Mini scores 82.8% on GPQA Diamond.
- Which is cheaper, Claude Sonnet 4.5 or GPT-5 Mini?
- GPT-5 Mini is cheaper at $2.00 per million output tokens against $15.00 for Claude Sonnet 4.5 - about 7.5x.
- When were Claude Sonnet 4.5 and GPT-5 Mini released?
- Claude Sonnet 4.5 was released 29 Sep 2025 by Anthropic. GPT-5 Mini was released 7 Aug 2025 by OpenAI.
Other head-to-heads
56GPT-5 Mini vs GPT-5 Nano38 shared evalsGPT-5 vs GPT-5 Mini36 shared evalsClaude Sonnet 4.5 vs GPT-4.1 Mini35 shared evalsClaude Opus 4.5 vs Claude Sonnet 4.534 shared evalsGPT-4.1 Mini vs GPT-5 Mini32 shared evalsClaude Sonnet 4.5 vs GPT-5.232 shared evalsGPT-5 Mini vs GPT-5.232 shared evalsClaude Sonnet 4.5 vs GPT-531 shared evalsClaude Sonnet 4.5 vs GPT-5 Nano31 shared evalsClaude Opus 4.5 vs GPT-5 Mini31 shared evalsClaude 4 Sonnet vs GPT-5 Mini29 shared evalsClaude 4 Sonnet vs Claude Sonnet 4.528 shared evalsClaude Opus 4.6 vs Claude Sonnet 4.528 shared evalsClaude Sonnet 4.5 vs Kimi K2.528 shared evalsClaude Sonnet 4.5 vs Grok 4.1 Fast28 shared evalsClaude Opus 4.6 vs GPT-5 Mini28 shared evalsClaude Sonnet 4.5 vs Gemini 3.1 Pro Preview27 shared evalsClaude Sonnet 4.5 vs DeepSeek V3.227 shared evalsGemini 3.1 Pro Preview vs GPT-5 Mini27 shared evalsGPT-5 Mini vs GPT-5.427 shared evalsClaude Sonnet 4.5 vs GPT-5.526 shared evalsClaude Sonnet 4.5 vs GPT-5.426 shared evalsClaude Sonnet 4.5 vs Gemini 2.5 Pro26 shared evalsDeepSeek V3.2 vs GPT-5 Mini26 shared evalsGemini 2.5 Pro vs GPT-5 Mini26 shared evalsGPT-5 Mini vs Grok 4.1 Fast26 shared evalsClaude Opus 4.8 vs Claude Sonnet 4.525 shared evalsClaude Sonnet 4.5 vs GLM 4.725 shared evalsGPT-5 Mini vs GPT-5.525 shared evalsGPT-5 Mini vs Kimi K2.525 shared evalsGLM 5.1 vs GPT-5 Mini25 shared evalsClaude Opus 4.7 vs GPT-5 Mini25 shared evalsGPT-5 Mini vs gpt-oss-120b25 shared evalsGLM 4.7 vs GPT-5 Mini25 shared evalsClaude Fable 5 vs Claude Sonnet 4.524 shared evalsClaude Sonnet 4.5 vs Claude Sonnet 4.624 shared evalsClaude Opus 4.7 vs Claude Sonnet 4.524 shared evalsClaude Opus 4.8 vs GPT-5 Mini24 shared evalsGPT-5.4 Mini vs GPT-5 Mini24 shared evalsClaude Sonnet 4.5 vs GLM 5.123 shared evalsClaude Sonnet 4.5 vs gpt-oss-120b23 shared evalsClaude Sonnet 4.5 vs GPT-5.4 Mini23 shared evalsClaude Fable 5 vs GPT-5 Mini23 shared evalsClaude Sonnet 4.6 vs GPT-5 Mini23 shared evalsClaude Sonnet 4.5 vs Qwen3.6 Plus22 shared evalsGPT-4.1 vs GPT-5 Mini22 shared evalsClaude Sonnet 4.5 vs GPT-4o21 shared evalsGPT-4.1 Nano vs GPT-5 Mini21 shared evalsGPT-5 Mini vs Qwen3.6 Plus21 shared evalsGPT-4o vs GPT-5 Mini20 shared evalsClaude Sonnet 4.5 vs GPT-4.119 shared evalsGPT-4o-mini vs GPT-5 Mini18 shared evalsClaude Sonnet 4.5 vs GPT-4o-mini17 shared evalsClaude Sonnet 4.5 vs GPT-4.1 Nano16 shared evalsGPT-5 Mini vs GPT-6 Astra12 shared evalsClaude Sonnet 4.5 vs GPT-6 Astra11 shared evals
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