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Anthropic Claude Fable 5.1 end of life

349days

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    There are 350 days until Anthropic Claude Fable 5.1 end of life, on Wednesday, 1 September 2027.

    Anthropic Claude Fable 5.1 reaches end of life on September 1, 2027: upstream support ends and no further security fixes are expected. It was released on September 1, 2026.

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    Last verified Sep 16, 2026

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