Model release · 2026-09-01
Multimodal · Anthropic
Claude Fable 5.1
An update for coding and long projects in paid Claude products and the API. Account for safeguards and fallback in evaluations.
Sources
Anthropic · releaseOpen primary source Multimodal · Anthropic
An update for coding and long projects in paid Claude products and the API. Account for safeguards and fallback in evaluations.