Anthropic unveils Fable 5.1 and Mythos 5.1, its most powerful AI models

Anthropic announces the release of its new models, Fable 5.1 and Mythos 5.1, claiming enhanced performance.

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The fact

These versions include strengthened control mechanisms to mitigate AI-related risks.

The rollout comes with increased transparency about training data.

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Auto-synthesis from 1 media source · identified on September 2, 2026