Claude Sonnet 4.6 — Specifications
| Developer | Anthropic |
|---|---|
| Type | LLM |
| Modality | Text, Vision → Text |
| Parameters | Undisclosed |
| Context window | 1M |
| Max output | 64K |
| License | Proprietary |
| Open weights | ❌ No |
| Released | 2025 |
| Input price | $3.00 /1M |
| Output price | $15.00 /1M |
| API providers | Anthropic, AWS, Vertex AI, Azure |
Anthropic’s best balance of speed and intelligence — adaptive thinking, a 1M-token context window and 64K output. The default workhorse for most production workloads.