Claude Opus 4.5 vs GPT-5 Mini
Head to head on 31 shared benchmarks, with price, context window, and release dates.
Benchmark scores
75evals · sort by any column, ⤢ to expand fullscreen
| Model | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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| Claude Opus 4.5 Anthropic | 91.3% | 61.3% | 35.6% | 6.1% | 1687elo | 73.1 | 20.7% | 86.6% | 30.1% | 58.0% | 78.1% | 79.7% | 74.4% | 62.5% | 81.3% | 90.4% | 80.1% | 87.1% | 45.2% | 83.2% | 89.5% | 68.7% | 36.0% | 45.0% | 49.5% | 70.7% | 79.2% | 74.3% | 47.0% | 20.6% | 89.5% | - | - | - | - | - | - | 16.7% | - | - | - | - | - | - | - | - | - | 84.7% | - | - | 12.13 | - | 83.8% | - | 83.5% | - | - | - | - | 100.0% | 37.4 | 77.5% | - | - | 45.3 | 61.8 | - | - | - | - | - | - | - | - | - | 64.8% |
| GPT-5 Mini OpenAI | 90.7% | 60.2% | 18.1% | 2.8% | 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% | 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% | 100.0% | 66.7% | 0.0% | 88.3% | 60.0% | - | 100.0% | 90.0% | - | 47.2% | - | 80.0% | - | 0.0% | 1.54 | 1.54 | 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% |
2 / 2 models
| Attribute | Claude Opus 4.5 Anthropic | GPT-5 Mini OpenAI |
|---|---|---|
| Description | Claude Opus 4.5 is an AI model from Anthropic. | GPT-5 mini is an AI model from OpenAI. |
| Family | Claude | GPT |
| Params | - | - |
| Open weights | closed | closed |
| License | proprietary | proprietary |
| Released | 24 Nov 2025 | 7 Aug 2025 |
| Context | 200,000 | 400,000 |
| Input $/1M | $5.00 | $0.25 |
| Output $/1M | $25.00 | $2.00 |
| 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 | text, image, file |
| Providers | - | - |
| Publisher | Anthropic | OpenAI |
| Reported scores |
FAQ
- Is Claude Opus 4.5 or GPT-5 Mini better?
- Across the 31 benchmarks both models report on Sophon, Claude Opus 4.5 leads on 27 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-5 Mini compare on GPQA Diamond?
- Claude Opus 4.5 scores 86.6% and GPT-5 Mini scores 82.8% on GPQA Diamond.
- Which is cheaper, Claude Opus 4.5 or GPT-5 Mini?
- GPT-5 Mini is cheaper at $2.00 per million output tokens against $25.00 for Claude Opus 4.5 - about 12.5x.
- When were Claude Opus 4.5 and GPT-5 Mini released?
- Claude Opus 4.5 was released 24 Nov 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 Opus 4.5 vs GPT-5.235 shared evalsClaude Opus 4.5 vs Claude Sonnet 4.534 shared evalsGPT-4.1 Mini vs GPT-5 Mini32 shared evalsGPT-5 Mini vs GPT-5.232 shared evalsClaude Sonnet 4.5 vs GPT-5 Mini31 shared evalsClaude 4 Sonnet vs GPT-5 Mini29 shared evalsClaude Opus 4.5 vs Grok 4.1 Fast29 shared evalsClaude Opus 4.6 vs GPT-5 Mini28 shared evalsClaude Opus 4.5 vs Gemini 3.1 Pro Preview28 shared evalsClaude Opus 4.5 vs Claude Opus 4.628 shared evalsClaude Opus 4.5 vs GPT-5.428 shared evalsGemini 3.1 Pro Preview vs GPT-5 Mini27 shared evalsGPT-5 Mini vs GPT-5.427 shared evalsClaude Opus 4.5 vs DeepSeek V3.227 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 4.5 vs GPT-5 Nano26 shared evalsClaude 4 Sonnet vs Claude Opus 4.526 shared evalsClaude Opus 4.5 vs Kimi K2.526 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 Opus 4.5 vs GPT-5.525 shared evalsClaude Opus 4.5 vs GLM 4.725 shared evalsClaude Opus 4.5 vs GPT-5.4 Mini25 shared evalsClaude Opus 4.8 vs GPT-5 Mini24 shared evalsGPT-5.4 Mini vs GPT-5 Mini24 shared evalsClaude Opus 4.5 vs Claude Opus 4.824 shared evalsClaude Opus 4.5 vs Claude Opus 4.724 shared evalsClaude Opus 4.5 vs Gemini 2.5 Pro24 shared evalsClaude Fable 5 vs GPT-5 Mini23 shared evalsClaude Sonnet 4.6 vs GPT-5 Mini23 shared evalsClaude Opus 4.5 vs GPT-523 shared evalsClaude Fable 5 vs Claude Opus 4.523 shared evalsClaude Opus 4.5 vs Claude Sonnet 4.623 shared evalsClaude Opus 4.5 vs GLM 5.123 shared evalsGPT-4.1 vs GPT-5 Mini22 shared evalsClaude Opus 4.5 vs Qwen3.6 Plus22 shared evalsGPT-4.1 Nano vs GPT-5 Mini21 shared evalsGPT-5 Mini vs Qwen3.6 Plus21 shared evalsClaude Opus 4.5 vs gpt-oss-120b21 shared evalsGPT-4o vs GPT-5 Mini20 shared evalsGPT-4o-mini vs GPT-5 Mini18 shared evalsClaude Opus 4.5 vs GPT-4o18 shared evalsClaude Opus 4.5 vs GPT-4.1 Mini16 shared evalsClaude Opus 4.5 vs GPT-4.116 shared evalsClaude Opus 4.5 vs GPT-4o-mini15 shared evalsClaude Opus 4.5 vs GPT-4.1 Nano15 shared evalsGPT-5 Mini vs GPT-6 Astra12 shared evalsClaude Opus 4.5 vs GPT-6 Astra11 shared evals
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