Detailed comparison of capabilities, features, and performance.
| Feature | Claude Sonnet 5 | Claude 4.6 Opus |
|---|---|---|
| AI Lab | Anthropic | Anthropic |
| Context Size | 1,000,000 tokens | 1,000,000 tokens |
| Max Output Size | 128,000 tokens | 125,000 tokens |
| Frontier Model | Yes | Yes |
| Vision Support | Yes | Yes |
| Description | Anthropic's next-generation Sonnet: the best combination of speed and intelligence, with a 1M token context window, 128k max output, and always-on adaptive thinking. Big gains in coding and agentic tasks over Sonnet 4.6. | The latest Opus 4.6 model from Anthropic |
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