Claude Opus 4.8 vs GPT-5.2
Head to head on 26 shared benchmarks, with price, context window, and release dates.
Benchmark scores
59evals · sort by any column, ⤢ to expand fullscreen
| Model | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Claude Opus 4.8 Anthropic | 66.7% | 67.0% | 1835elo | 80.8 | 47.2% | 92.0% | 48.7% | 62.2% | 80.1% | 79.3% | 78.3% | 67.4% | 81.4% | 84.3% | 89.7% | 91.8% | 53.2% | 85.8% | 69.9% | 69.0% | 54.8% | 53.5% | 75.6% | 58.3% | 82.7% | 94.4% | - | - | 15.5% | - | 80.4% | 14.5% | - | - | - | - | 1281elo | 40.0% | 53.9% | 13.4% | 22.5% | 1890elo | - | 56.9% | - | - | 10.4% | - | - | - | - | 83.4% | - | - | - | 69.2% | 82.7% | 60.9% | 70.9% | 63.4% |
| GPT-5.2 OpenAI | 65.9% | 60.0% | 1699elo | 71.6 | 40.7% | 71.2% | 8.0% | 47.4% | 78.7% | 76.1% | 78.2% | 61.8% | 79.8% | 93.2% | 83.2% | 72.0% | 49.7% | 84.4% | 67.1% | 15.0% | 49.3% | 40.4% | 75.8% | 31.8% | 53.5% | 46.5% | 51.0% | 100 | - | 100.0% | - | - | 0.0% | 16.7% | 40.6% | 9.4% | - | - | - | - | - | - | 12.93 | - | 85.0% | 79.0% | - | 66.9% | 24.0% | 81.4% | 96.7 | - | 18.7% | 66.7% | 71.8% | - | - | - | - | 56.3% |
2 / 2 models
| Attribute | Claude Opus 4.8 Anthropic | GPT-5.2 OpenAI |
|---|---|---|
| Description | Claude Opus 4.8 (Adaptive Reasoning, Max Effort) is an AI model from Anthropic. | GPT-5.2 is an AI model from OpenAI. |
| Family | Claude | GPT |
| Params | - | - |
| Open weights | - | closed |
| License | - | proprietary |
| Released | 28 May 2026 | 11 Dec 2025 |
| Context | 1,000,000 | 400,000 |
| Input $/1M | $5.00 | $1.75 |
| Output $/1M | $25.00 | $14.00 |
| Cache read $/1M | $0.500 | $0.175 |
| Cache write $/1M | $6.250 | - |
| Speed | 0 tok/s | 0 tok/s |
| Latency | 0.00 s | 0.00 s |
| Modalities | text, image, file | file, image, text |
| Providers | - | - |
| Publisher | Anthropic | OpenAI |
| Reported scores |
FAQ
- Is Claude Opus 4.8 or GPT-5.2 better?
- Across the 26 benchmarks both models report on Sophon, Claude Opus 4.8 leads on 24 of them. Which one is "better" depends on the benchmark - the table above shows every shared score.
- How do Claude Opus 4.8 and GPT-5.2 compare on GPQA Diamond?
- Claude Opus 4.8 scores 92.0% and GPT-5.2 scores 71.2% on GPQA Diamond.
- Which is cheaper, Claude Opus 4.8 or GPT-5.2?
- GPT-5.2 is cheaper at $14.00 per million output tokens against $25.00 for Claude Opus 4.8 - about 1.8x.
- When were Claude Opus 4.8 and GPT-5.2 released?
- Claude Opus 4.8 was released 28 May 2026 by Anthropic. GPT-5.2 was released 11 Dec 2025 by OpenAI.
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