Anthropic launches Claude Fable 5 AI model for public use with new safety measures

Jun 9, 2026

AI Summary

Anthropic has introduced Claude Fable 5, a powerful AI model available to enterprise customers and paid subscribers. This release follows the limited rollout of Mythos and includes enhanced safety features to mitigate risks in sensitive areas.

Anthropic has launched Claude Fable 5, an AI model similar to Mythos, for public use after a two-month limited rollout.
The company implemented new safeguards to prevent misuse in high-risk areas such as cybersecurity and biology.
Claude Fable 5 is designed to outperform previous models, showing over 10% improvement in certain benchmarks compared to Claude Opus 4.8.
The model will block responses to dangerous queries and revert to safer alternatives when necessary.
Anthropic also released an updated version of Mythos called Claude Mythos 5, with some safeguards lifted.
The launch comes as Anthropic prepares for a potential IPO, having recently reported a revenue run rate of $47 billion and a valuation of $965 billion.
Claude Fable 5 is priced at $10 per million input tokens and $50 per million output tokens, reflecting its advanced capabilities.
Customers are seeking higher accuracy and value for their investment, with early users reporting improved returns on investment.

anthropicmythosai modelsafeguardspublic release

Anthropic launches Claude Fable 5 AI model for public use with new safety measures

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