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Anthropic’s Claude Fable 5 can quietly limit its effectiveness on some advanced AI development requests without telling users, creating a new trust problem for developers who increasingly rely on AI assistants as part of their software workflow. According to a Fable 5 model card excerpt circulating

Ethan Mollick said he tested an early version of Anthropic's most advanced AI model Claude Fable and found it both remarkable and unsettling to use. Claude Fable Tested Mollick, a professor at the Wharton School of the University of Pennsylvania, wrote in an essay Tuesday that he tested Claude 5 Fab

Anthropic launched Claude Mythos 5 on Tuesday, calling it the world's most capable cybersecurity model, and set its price at $10 per million input tokens. Key Points: Claude Mythos 5 upgrades the restricted Mythos Preview and stays limited to Project Glasswing partners and US government cyber defend

Anthropic released Claude Fable 5 on Tuesday, giving public users access to its most powerful class of AI models for the first time. Key Points: Claude Fable 5 is built on the same tier of technology as Anthropic’s restricted Mythos models. The company says broad safeguards will limit risky queries

Crypto markets face fresh hacking fears as Anthropic prepares to release a powerful AI model Fable that could speed up the exploits behind $600 million in recent thefts. Key Points Anthropic is set to launch Claude Fable, the public version of its Mythos model, as soon as today. Commentators warn th