Claude Sonnet 4.6 (32k thinking)
ModelActiveby Anthropic · family “claude-sonnetk-thinking”
Epoch Capabilities Index
Not scored by Epoch AI
Released
17 Feb 2026
Context window
Unknown
Max output
Unknown
Input $ / 1M tokens
Unknown
Output $ / 1M tokens
Unknown
Cached input $ / 1M
Unknown
Each benchmark shown separately with its own source
Benchmark results (3)
| Benchmark | Domain | Score | vs best recorded | Setting | Run | Source |
|---|---|---|---|---|---|---|
| Chess Puzzles | games | 13.0% ±3.4 | 18% | 32K | 20 Feb 2026 | Eval log ↗ |
| OTIS Mock AIME 2024-2025 | math | 85.8% ±4.5 | 86% | 32K | 20 Feb 2026 | Eval log ↗ |
| GPQA diamond | science | 87.4% ±2.0 | 91% | 32K | 20 Feb 2026 | Eval log ↗ |
Source: Epoch AI Benchmarking Hub (CC BY 4.0). “External” rows are leaderboard results Epoch collects from third parties. Best reported setting per benchmark is shown.
API list price over time
Price history
$ per 1M tokens
This model has no public API price listing
0 recorded prices on — (OpenRouter listing); re-read on every data refresh, most recently 10h ago. Steps show when the price changed.
Events
- Model launchMajorAnthropic releases Claude Sonnet 4.6 (32k thinking)Epoch AI Benchmarking Hub