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On November 9, Anthropic released Claude Fable 5.2 (claude-fable-5-2) for demanding reasoning and long-horizon agentic work. It has a 1M-token context window and up to 128K output tokens. It costs $8 per 1M input tokens and $40 per 1M output tokens, down from $10 / $50 on Fable 5.1 and Mythos 5.1. Cache reads are $0.20 per 1M, Batch is half price, and Fast mode is $16 / $80. Fable 5.2 is available to all Claude API customers and on Amazon Bedrock, Google Cloud, and Microsoft Foundry. Claude Mythos 5.2 has the same capabilities and prices. It is limited to organizations verified through Anthropic programs such as the Cyber Verification Program. Source: platform.claude.com/docs/en/models/fable-5-2/whats-new-fable-5-2.
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