Anthropic Reverses Secret Guardrails Plan Behind Claude Fable 5

TL;DR Summary
Anthropic has scrapped a covert policy to degrade Claude Fable 5 for frontier AI work after heavy backlash from the AI research community; safeguards will now be visible, with alerts or routing to a less capable model when misuse is suspected, reversing a plan critics warned would hinder external AI research and collaboration.
- Anthropic Walks Back Policy That Could Have ‘Sabotaged’ AI Researchers Using Claude WIRED
- Claude Fable 5 and Claude Mythos 5 Anthropic
- Anthropic’s New Fable AI Model Is Met With User Backlash Over Restrictions WSJ
- Cybersecurity researchers aren’t happy about the guardrails on Anthropic’s Fable TechCrunch
- Claude Fable 5 available today in Microsoft Foundry: Powering the next era of autonomous agents Microsoft Azure
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