Claude 4 Sonnet vs Claude Opus 4.8
Head to head on 22 shared benchmarks, with price, context window, and release dates.
Benchmark scores
60evals · sort by any column, ⤢ to expand fullscreen
| Model | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Claude Opus 4.8 Anthropic | 66.7% | 1840elo | 80.8 | 92.0% | 48.7% | 62.2% | 80.1% | 79.3% | 78.3% | 67.4% | 81.4% | 84.3% | 89.7% | 53.2% | 85.8% | 69.9% | 83.4% | 54.8% | 53.5% | 75.6% | 58.3% | 94.4% | - | - | 15.5% | - | 80.4% | 14.5% | - | 62.0% | - | 1281elo | 40.0% | 53.9% | 13.4% | 47.2% | 22.5% | 1890elo | - | 56.9% | 10.4% | - | - | 91.8% | - | - | 69.0% | - | - | - | - | - | 69.2% | 82.7% | - | 55.1% | 70.9% | 82.7% | - | - | 63.1% |
| Claude 4 Sonnet Anthropic | 54.7% | 1483elo | 58.4 | 77.7% | 10.7% | 54.7% | 64.8% | 77.5% | 54.6% | 44.3% | 72.9% | 70.5% | 69.0% | 33.9% | 72.4% | 62.5% | 43.9% | 35.0% | 40.0% | 69.6% | 31.1% | 64.6% | 77.3% | 74.3% | - | 22.9% | - | - | 47.8% | - | 19.8% | - | - | - | - | - | - | - | 67.5% | - | - | 65.5% | 99.1% | - | 86.7% | 84.2% | - | 6.18 | 6.18 | 58.3% | 35.6% | 74.6% | - | - | 0.59 | - | - | - | 84.0% | 84.0% | 59.6% |
2 / 2 models
| Attribute | Claude 4 Sonnet Anthropic | Claude Opus 4.8 Anthropic |
|---|---|---|
| Description | Claude 4 Sonnet 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 | 22 May 2025 | 28 May 2026 |
| Context | 200,000 | 1,000,000 |
| Input $/1M | - | $5.00 |
| Output $/1M | - | $25.00 |
| Cache read $/1M | - | $0.500 |
| Cache write $/1M | - | $6.250 |
| Speed | 0 tok/s | 0 tok/s |
| Latency | 0.00 s | 0.00 s |
| Modalities | text, image | text, image, file |
| Providers | - | - |
| Publisher | Anthropic | Anthropic |
| Reported scores |
FAQ
- Is Claude 4 Sonnet or Claude Opus 4.8 better?
- Across the 22 benchmarks both models report on Sophon, Claude Opus 4.8 leads on 22 of them. Which one is "better" depends on the benchmark - the table above shows every shared score.
- How do Claude 4 Sonnet and Claude Opus 4.8 compare on GPQA Diamond?
- Claude 4 Sonnet scores 77.7% and Claude Opus 4.8 scores 92.0% on GPQA Diamond.
- When were Claude 4 Sonnet and Claude Opus 4.8 released?
- Claude 4 Sonnet was released 22 May 2025 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 4.7 vs Claude Opus 4.830 shared evalsClaude 4 Sonnet vs GPT-5 Mini29 shared evalsClaude Opus 4.8 vs Claude Sonnet 4.629 shared evalsClaude 4 Sonnet vs Claude Sonnet 4.528 shared evalsClaude Opus 4.6 vs Claude Opus 4.828 shared evalsClaude Opus 4.8 vs GPT-5.428 shared evalsClaude Opus 4.8 vs Kimi K2.528 shared evalsClaude Opus 4.8 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 4 Sonnet vs Claude Opus 4.526 shared evalsClaude Opus 4.8 vs Claude Sonnet 4.525 shared evalsClaude 4 Sonnet vs GPT-525 shared evalsClaude 4 Sonnet vs GPT-5 Nano25 shared evalsClaude 4 Sonnet vs GPT-5.225 shared evalsClaude Opus 4.8 vs Qwen3.6 Plus25 shared evalsClaude 4 Sonnet vs Gemini 2.5 Pro25 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 4 Sonnet vs Grok 4.1 Fast24 shared evalsClaude 4 Sonnet vs GPT-5.523 shared evalsClaude 4 Sonnet vs Gemini 3.1 Pro Preview23 shared evalsClaude 4 Sonnet vs Kimi K2.523 shared evalsClaude Opus 4.8 vs GPT-5 Nano22 shared evalsClaude Opus 4.8 vs DeepSeek V3.222 shared evalsClaude 4 Sonnet vs Claude Fable 522 shared evalsClaude 4 Sonnet vs Claude Opus 4.622 shared evalsClaude 4 Sonnet vs GPT-5.422 shared evalsClaude 4 Sonnet vs GLM 4.722 shared evalsClaude Opus 4.8 vs GLM 4.721 shared evalsClaude 4 Sonnet vs Claude Opus 4.721 shared evalsClaude 4 Sonnet vs DeepSeek V3.221 shared evalsClaude 4 Sonnet vs gpt-oss-120b21 shared evalsClaude Opus 4.8 vs Gemini 2.5 Pro20 shared evalsClaude 4 Sonnet vs Claude Sonnet 4.620 shared evalsClaude 4 Sonnet vs GLM 5.120 shared evalsClaude 4 Sonnet vs GPT-4o20 shared evalsClaude 4 Sonnet vs GPT-4.1 Mini19 shared evalsClaude Opus 4.8 vs GPT-6 Astra19 shared evalsClaude 4 Sonnet vs GPT-4.119 shared evalsClaude 4 Sonnet vs Qwen3.6 Plus19 shared evalsClaude 4 Sonnet vs GPT-5.4 Mini19 shared evalsClaude Opus 4.8 vs gpt-oss-120b18 shared evalsClaude 4 Sonnet vs GPT-4o-mini18 shared evalsClaude Opus 4.8 vs GPT-517 shared evalsClaude 4 Sonnet vs GPT-4.1 Nano16 shared evalsClaude Opus 4.8 vs GPT-4o14 shared evalsClaude Opus 4.8 vs GPT-4o-mini12 shared evalsClaude Opus 4.8 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 evalsClaude 4 Sonnet vs GPT-6 Astra8 shared evals
Comparing something else? Build your own side-by-side.