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Anthropic Redeploys Claude Fable 5 Globally with Toughened Cybersecurity Classifiers
Anthropic has lifted the temporary suspension on Claude Fable 5 and Mythos 5 following the removal of US export controls. Fable 5 is now available across the Claude platform, including Claude Code, with a stricter safety classifier that may trigger more false positives during routine debugging.
Why it matters. You can now access Claude's most advanced model in Claude Code, but watch out for false-positive safety blocks that will fall back to Opus 4.8.