🪦 Dead
Claude 3.7 Sonnet
Model deprecation · Model Deprecation · shut down May 11, 2026
- Born
- Died
- Lifespan
- 1y 2m
- Cause of death
- Model Deprecation
- Killed by
- Anthropic
- Type
- Model
Anthropic's first model with hybrid 'extended thinking' — it could reason step-by-step for up to 128K tokens before answering, scoring state-of-the-art on SWE-Bench coding benchmarks at launch. Deprecated just 15 months after release as the Claude 4 family made extended thinking standard across the entire lineup.