Anthropic Releases Fable 5.1 with Lower Token Costs and Fewer Restrictions

2 Sept 2026, 1:09 am · 11d ago · 1 min read · TechCrunch AI

AI lab Anthropic has released Claude Fable 5.1, an updated model designed to cut operational token costs while minimizing false-positive refusals from its safety filters. The upgrade aims to provide developers with a more cost-effective and flexible AI tool for coding, workflow automation, and enterprise tasks. By relaxing overly strict safeguard triggers without compromising core safety guardrails, Anthropic addresses common enterprise developer pain points around restrictive guardrails. The release underscores Anthropic's push to balance safety with enterprise usability, intensifying competition against OpenAI and Google in the cost-sensitive frontier AI market.