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...
Anthropic: Claude Sonnet 4.6 — Anthropic. Context window 1,000,000 tokens. API pricing (per 1M tokens): Input $3, Output $15. License: Proprietary. LMArena 1,458. GPQA Diamond 83.3%.
| Provider | Anthropic |
|---|---|
| API model ID | anthropic/claude-sonnet-4.6 |
| Tier | Frontier |
| Context window | 1,000,000 tokens |
| Max output | 128,000 tokens |
| License | Proprietary |
| API pricing (per 1M tokens) · Input | $3 |
| API pricing (per 1M tokens) · Output | $15 |
| LMArena | 1,458 (claude-sonnet-4-6) |
| GPQA Diamond | 83.3% |
LMArena (CC-BY 4.0, best reasoning setting, 2026-10-02) · GPQA Diamond: Epoch AI (CC-BY 4.0)
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