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Anthropic’s Claude Fable 5

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Claude Fable 5 and its variant Claude Fable 5.1 are run in Replit Agent’s production environment, as referenced in a late‑September blog post. Replit’s CEO Amjad Masad announced on October 17 that Replit will default to OpenAI’s ChatGPT for its platform, citing cost and performance, but stated that users can still choose Anthropic models. Replit remains model‑agnostic and keeps Anthropic’s Claude available despite the shift in default provider. Anthropic introduced the Fable class model in 2026 Boto3 can be used to call Amazon Bedrock’s InvokeModel API to retrieve structured outputs from Anthropic Claude models Anthropic shut down Fable 5 worldwide United States lifted export controls on Fable 5· Entity summary generated by Graphiti

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Relation timeline

BY VALID-FROM DATE
  1. AnthropicSHUT DOWNAnthropic’s Claude Fable 5

    Anthropic shut down Fable 5 worldwide

    Ended 2026-10-271 sourceAnthropic
  2. United StatesLIFTED EXPORT CONTROLS ONAnthropic’s Claude Fable 5

    United States lifted export controls on Fable 5

    Current1 sourceUnited States
  3. Anthropic’s Claude Fable 5CALLSAmazon Bedrock

    Boto3 can be used to call Amazon Bedrock’s InvokeModel API to retrieve structured outputs from Anthropic Claude models

    Current1 sourceAmazon Bedrock
  4. AnthropicINTRODUCEDAnthropic’s Claude Fable 5

    Anthropic introduced the Fable class model in 2026

    Current1 sourceAnthropic

Relations are facts Graphiti extracted from reports, not verbatim quotes. An end date means later reporting showed the relation no longer holds.

Events 3

Source reports 3