Claude Opus 4.5 vs GPT-4o
Head to head on 18 shared benchmarks, with price, context window, and release dates.
Benchmark scores
56evals · sort by any column, ⤢ to expand fullscreen
| Model | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Claude Opus 4.5 Anthropic | 62.7% | 61.3% | 20.7% | 81.0% | 13.2% | 43.0% | 78.1% | 79.7% | 62.5% | 81.3% | 73.8% | 88.9% | 68.7% | 47.0% | 79.2% | 74.3% | 40.9% | 86.3% | - | - | - | - | 16.7% | - | 35.6% | 6.1% | - | 1683elo | 73.1 | 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% | - | 61.8 | - | 20.6% | - | 62.2% |
| GPT-4o OpenAI | 6.0% | 45.9% | 0.3% | 54.3% | 2.4% | 34.3% | 55.1% | 46.1% | 70.1% | 49.0% | 30.9% | 74.8% | 57.4% | 33.3% | 21.6% | 74.5% | 8.3% | 25.1% | 18.2% | 15.0% | 38 | 0.0% | - | 0.33 | - | - | 6.1% | - | - | - | 96.1 | - | - | - | 0.0% | - | - | - | 75.9% | - | 10.8% | - | - | - | 54.0% | - | - | - | 5.71 | - | - | 61.2 | - | 0.98 | - | 32.5% | 33.4% |
2 / 2 models
| Attribute | Claude Opus 4.5 Anthropic | GPT-4o OpenAI |
|---|---|---|
| Description | Claude Opus 4.5 is an AI model from Anthropic. | GPT-4o is an AI model from OpenAI. |
| Family | Claude | GPT |
| Params | - | - |
| Open weights | closed | closed |
| License | proprietary | proprietary |
| Released | 24 Nov 2025 | 20 Nov 2024 |
| Context | 200,000 | 128,000 |
| Input $/1M | $5.00 | $2.50 |
| Output $/1M | $25.00 | $10.00 |
| Cache read $/1M | $0.500 | $1.250 |
| 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 | Taubench61.2 pass^1 GSM8K96.1 Accuracy ScholarSearch5.71 Social Sciences & Humanities (%) MortgageTax57.4% AIME202438 pass@1 |
FAQ
- Is Claude Opus 4.5 or GPT-4o better?
- Across the 18 benchmarks both models report on Sophon, Claude Opus 4.5 leads on 16 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 compare on GPQA Diamond?
- Claude Opus 4.5 scores 81.0% and GPT-4o scores 54.3% on GPQA Diamond.
- Which is cheaper, Claude Opus 4.5 or GPT-4o?
- GPT-4o is cheaper at $10.00 per million output tokens against $25.00 for Claude Opus 4.5 - about 2.5x.
- When were Claude Opus 4.5 and GPT-4o released?
- Claude Opus 4.5 was released 24 Nov 2025 by Anthropic. GPT-4o was released 20 Nov 2024 by OpenAI.
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