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Anthropic Apologizes for Stealthy Claude Fable Safeguards

Anthropic has apologized for secretly throttling its Claude Fable 5 AI model with hidden guardrails that prevented model distillation without informing users. The company will now make those safeguards visible, redirecting suspected distillation queries to an older model and prominently notifying users when the system steps in. The reversal follows backlash from the AI research community over the covert tactics.

Jun 114 minNeura News

AI Models

Anthropic Releases Safer Claude Fable 5 AI After Mythos Concerns

Anthropic has released Claude Fable 5, a restricted version of its powerful Mythos AI system. The new model costs twice as much as the previous flagship and includes guardrails to prevent misuse in cybersecurity and biology, after the company warned Mythos could aid hackers.

Jun 93 minNeura News

AI Models

Anthropic Launches First Mythos-Class AI Model Claude Fable 5

Anthropic has released Claude Fable 5, its most powerful widely available AI model and the first from the previously withheld Mythos class. The company claims new safeguards make the release safe by blocking responses in high-risk areas like cybersecurity and biology, falling back to the Claude Opus 4.8 model. Pricing is double that of Opus 4.8, at $10 per million input tokens and $50 per million output tokens.

Jun 93 minNeura News

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Anthropic Apologizes for Stealthy Claude Fable Safeguards

Anthropic Releases Safer Claude Fable 5 AI After Mythos Concerns

Anthropic Launches First Mythos-Class AI Model Claude Fable 5