Anthropic: Claude Sonnet 4.6
Sonnet 4.6 is Anthropic's most capable Sonnet-class model yet, with frontier performance across coding, agents, and professional work. It excels at iterative development, complex codebase navigation, end-to-end project management with...
Everything else
| Max output | 128K |
|---|---|
| Input / 1M | $3 |
| Output / 1M | $15 |
| Cache read / 1M | $0.3 |
| Cache write / 1M | $3.75 |
| 1M in + 1M out | $18 |
| Takes | text, image, file |
| Returns | text |
| Tools | yes |
| Reasoning | optional · max, high, medium, low |
| Open weights | no |
| Released | 2026-02-17 |
| Knowledge cutoff | — |
| Retires | — |
| Catalog id | anthropic/claude-sonnet-4.6 |
Benchmarks
| source | epoch |
|---|---|
| eci | 153.2 |
| confidence | Likely |
| accessibility | API access |
| gpqa | 0.874 |
| gpqaStderr | 0.02 |
| sweBenchVerified | 0.752 |
| sweBenchVerifiedStderr | 0.0196 |
| frontierMath | 0.324 |
| frontierMathStderr | 0.0281 |
| aime | 0.858 |
| aimeStderr | 0.0454 |
| simpleQA | 0.29 |
| simpleQAStderr | 0.0144 |
Benchmark scores by Epoch AI, CC BY 4.0.
Using it
In 00, this model is picked per agent — and per tier, so the model that answers your customers need not be the one that writes your code. Get 00.