Claude Opus 4.6 vs Claude Opus 4.8
Head to head on 28 shared benchmarks, with price, context window, and release dates.
Benchmark scores
53evals · sort by any column, ⤢ to expand fullscreen
| Model | ||||||||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Claude Opus 4.6 Anthropic | 56.1% | 67.0% | 69.0% | 1223elo | 1809elo | 77.7 | 40.7% | 89.6% | 39.9% | 53.1% | 78.8% | 78.2% | 69.9% | 63.3% | 83.3% | 89.3% | 88.7% | 78.5% | 48.2% | 86.7% | 68.5% | 50.0% | 51.6% | 51.9% | 76.0% | 46.2% | 57.6% | 92.1% | 99.79 | 1.5 | - | - | 2.08 | - | - | - | - | - | - | 84.9% | 88771 | 58 | - | 93 | - | 44.5 | 72.0% | 75.6% | - | - | 80.6 | - | - | 68.1% |
| Claude Opus 4.8 Anthropic | 15.5% | 66.7% | 62.0% | 1281elo | 1840elo | 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% | - | - | 80.4% | 14.5% | - | 40.0% | 53.9% | 13.4% | 22.5% | 1890elo | 56.9% | - | - | - | 10.4% | - | 83.4% | - | - | - | 69.2% | 82.7% | - | 55.1% | 70.9% | 63.1% |
2 / 2 models
| Attribute | Claude Opus 4.6 Anthropic | Claude Opus 4.8 Anthropic |
|---|---|---|
| Description | Claude Opus 4.6 is an AI model from Anthropic. | Claude Opus 4.8 (Adaptive Reasoning, Max Effort) is an AI model from Anthropic. |
| Family | Claude | Claude |
| Params | - | - |
| Open weights | closed | - |
| License | proprietary | - |
| Released | 5 Feb 2026 | 28 May 2026 |
| Context | 1,000,000 | 1,000,000 |
| Input $/1M | $5.00 | $5.00 |
| Output $/1M | $25.00 | $25.00 |
| Cache read $/1M | $0.500 | $0.500 |
| Cache write $/1M | $6.250 | $6.250 |
| Speed | 0 tok/s | 0 tok/s |
| Latency | 0.00 s | 0.00 s |
| Modalities | text, image, file | text, image, file |
| Providers | - | - |
| Publisher | Anthropic | Anthropic |
| Reported scores | GPQA Diamond89.6% (AA) Humanity's Last Exam (HLE)39.9% (AA) SciCode51.9% (AA) τ²-bench (Tau²-bench)92.1% (AA) Terminal-Bench (Hard)46.2% (AA) |
FAQ
- Is Claude Opus 4.6 or Claude Opus 4.8 better?
- Across the 28 benchmarks both models report on Sophon, Claude Opus 4.8 leads on 21 of them. Which one is "better" depends on the benchmark - the table above shows every shared score.
- How do Claude Opus 4.6 and Claude Opus 4.8 compare on GPQA Diamond?
- Claude Opus 4.6 scores 89.6% and Claude Opus 4.8 scores 92.0% on GPQA Diamond.
- When were Claude Opus 4.6 and Claude Opus 4.8 released?
- Claude Opus 4.6 was released 5 Feb 2026 by Anthropic. Claude Opus 4.8 was released 28 May 2026 by Anthropic.
Other head-to-heads
56Claude Opus 4.8 vs GPT-5.541 shared evalsClaude Fable 5 vs Claude Opus 4.840 shared evalsClaude Opus 4.8 vs Gemini 3.1 Pro Preview38 shared evalsClaude Opus 4.6 vs GPT-5.433 shared evalsClaude Opus 4.6 vs Gemini 3.1 Pro Preview31 shared evalsClaude Opus 4.6 vs Kimi K2.531 shared evalsClaude Opus 4.6 vs GPT-5.230 shared evalsClaude Opus 4.7 vs Claude Opus 4.830 shared evalsClaude Opus 4.8 vs Claude Sonnet 4.629 shared evalsClaude Opus 4.6 vs Claude Opus 4.729 shared evalsClaude Opus 4.6 vs Claude Sonnet 4.528 shared evalsClaude Opus 4.6 vs GPT-5 Mini28 shared evalsClaude Opus 4.6 vs GPT-5.528 shared evalsClaude Opus 4.8 vs GPT-5.428 shared evalsClaude Opus 4.8 vs Kimi K2.528 shared evalsClaude Opus 4.5 vs Claude Opus 4.628 shared evalsClaude Opus 4.6 vs Claude Sonnet 4.628 shared evalsClaude Opus 4.8 vs GLM 5.127 shared evalsClaude Opus 4.6 vs GLM 5.127 shared evalsClaude Opus 4.8 vs GPT-5.226 shared evalsClaude Opus 4.8 vs GPT-5.4 Mini26 shared evalsClaude Fable 5 vs Claude Opus 4.626 shared evalsClaude Opus 4.6 vs DeepSeek V3.226 shared evalsClaude Opus 4.8 vs Claude Sonnet 4.525 shared evalsClaude Opus 4.8 vs Qwen3.6 Plus25 shared evalsClaude Opus 4.6 vs Grok 4.1 Fast25 shared evalsClaude Opus 4.6 vs GPT-5.4 Mini25 shared evalsClaude Opus 4.8 vs GPT-5 Mini24 shared evalsClaude Opus 4.5 vs Claude Opus 4.824 shared evalsClaude Opus 4.8 vs Grok 4.1 Fast24 shared evalsClaude Opus 4.6 vs Qwen3.6 Plus24 shared evalsClaude Opus 4.6 vs GPT-5 Nano23 shared evalsClaude Opus 4.8 vs GPT-5 Nano22 shared evalsClaude 4 Sonnet vs Claude Opus 4.822 shared evalsClaude Opus 4.8 vs DeepSeek V3.222 shared evalsClaude 4 Sonnet vs Claude Opus 4.622 shared evalsClaude Opus 4.8 vs GLM 4.721 shared evalsClaude Opus 4.6 vs Gemini 2.5 Pro21 shared evalsClaude Opus 4.6 vs GLM 4.721 shared evalsClaude Opus 4.8 vs Gemini 2.5 Pro20 shared evalsClaude Opus 4.6 vs GPT-519 shared evalsClaude Opus 4.8 vs GPT-6 Astra19 shared evalsClaude Opus 4.6 vs gpt-oss-120b19 shared evalsClaude Opus 4.8 vs gpt-oss-120b18 shared evalsClaude Opus 4.8 vs GPT-517 shared evalsClaude Opus 4.6 vs GPT-4o15 shared evalsClaude Opus 4.8 vs GPT-4o14 shared evalsClaude Opus 4.6 vs GPT-4.1 Mini13 shared evalsClaude Opus 4.6 vs GPT-4.113 shared evalsClaude Opus 4.6 vs GPT-6 Astra13 shared evalsClaude Opus 4.8 vs GPT-4o-mini12 shared evalsClaude Opus 4.8 vs GPT-4.1 Nano12 shared evalsClaude Opus 4.6 vs GPT-4o-mini12 shared evalsClaude Opus 4.6 vs GPT-4.1 Nano12 shared evalsClaude Opus 4.8 vs GPT-4.1 Mini11 shared evalsClaude Opus 4.8 vs GPT-4.111 shared evals
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