Fable

Fable is an open-source framework designed to help organizations evaluate and monitor the safety, performance, and reliability of large language models in production environments. The platform addresses a critical governance need by enabling teams to test AI systems against potential risks like hallucinations, bias, and prompt injection attacks before deployment. For enterprises, Fable provides structured processes for documenting model behavior, maintaining audit trails, and demonstrating compliance with internal policies and regulatory requirements around AI accountability.

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Corporate PolicyGlobal2026-08-08

Anthropic Relaxes Fable's Biosecurity Controls as OpenAI Races to Patch Astra

OpenAI has committed to new pre-deployment security controls for its Astra model after internal evaluations found it crosses critical cyber capability thresholds defined in its Preparedness Framework. Separately, Anthropic has confirmed it is loosening Fable's biological-domain refusal behaviors in response to competitive pressure from Chinese AI developers. Together, the disclosures reveal that vendor safety commitments are dynamic, not fixed, and require active monitoring by enterprise compliance teams.

Fable Astra OpenAI Anthropic biosecurity model safety Preparedness Framework dual-use AI