Claude Opus 4.5 vs GPT-4o-mini
Head to head on 15 shared benchmarks, with price, context window, and release dates.
Benchmark scores
62evals · sort by any column, ⤢ to expand fullscreen
| Model | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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| Claude Opus 4.5 Anthropic | 62.7% | 61.3% | 1683elo | 81.0% | 13.2% | 43.0% | 78.1% | 79.7% | 62.5% | 81.3% | 73.8% | 88.9% | 68.7% | 47.0% | 74.3% | - | - | - | - | 16.7% | - | - | 35.6% | 6.1% | - | 73.1 | 20.7% | 84.7% | 12.13 | - | - | - | 83.8% | 83.5% | - | 74.4% | 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 | 40.9% | - | 20.6% | - | - | - | - | 86.3% | 62.2% |
| GPT-4o-mini OpenAI | 14.7% | 45.5% | 871elo | 42.6% | 4.2% | 31.0% | 47.2% | 43.0% | 65.8% | 32.9% | 23.4% | 64.8% | 54.5% | 22.9% | 60.5% | 16.7% | 3.6% | 11.7% | 50.7% | - | 0.29 | 0.0% | - | - | 0.0% | - | - | - | - | 0.0% | 1.54 | 0.0% | - | - | 72.0% | - | - | - | 78.9% | - | 62.8% | - | 78.0% | - | - | - | - | - | 3.81 | - | - | - | 100.0% | - | - | 0.36 | - | 0.78 | 83.3% | 54.5% | 22.5% | - | 39.6% |
2 / 2 models
| Attribute | Claude Opus 4.5 Anthropic | GPT-4o-mini OpenAI |
|---|---|---|
| Description | Claude Opus 4.5 is an AI model from Anthropic. | GPT-4o Mini is an AI model from OpenAI. |
| Family | Claude | GPT |
| Params | - | - |
| Open weights | closed | closed |
| License | proprietary | proprietary |
| Released | 24 Nov 2025 | 18 Jul 2024 |
| Context | 200,000 | 128,000 |
| Input $/1M | $5.00 | $0.15 |
| Output $/1M | $25.00 | $0.60 |
| Cache read $/1M | $0.500 | $0.075 |
| 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-4o-mini better?
- Across the 15 benchmarks both models report on Sophon, Claude Opus 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 Opus 4.5 and GPT-4o-mini compare on GPQA Diamond?
- Claude Opus 4.5 scores 81.0% and GPT-4o-mini scores 42.6% on GPQA Diamond.
- Which is cheaper, Claude Opus 4.5 or GPT-4o-mini?
- GPT-4o-mini is cheaper at $0.60 per million output tokens against $25.00 for Claude Opus 4.5 - about 41.7x.
- When were Claude Opus 4.5 and GPT-4o-mini released?
- Claude Opus 4.5 was released 24 Nov 2025 by Anthropic. GPT-4o-mini was released 18 Jul 2024 by OpenAI.
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