Claude Code v2.1.321 released: Claude Fable 5.2 is now the default Fable model

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Claude Code launches v2.1.321, introducing Claude Fable 5.2 (claude-fable-5-2) as the default Fable model with 1M context support. Pricing is $8/$40 per Mtok for generation and $0.20/Mtok for cache reads.

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