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Claude Fable 5.1, Anthropic's new frontier model is now available on AWS GovCloud (US)

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AWS·Sep 1, 2026, 02:00 PMFeatureSecurity-relevantAI-assisted summary

Summary

Claude Fable 5.1 is now generally available on Amazon Bedrock in AWS GovCloud (US) for regulated‑industry customers.
The model supports long‑running, high‑stakes work—owning entire codebases, doing code review and performance tasks over multi‑hour sessions while honestly reporting failures.
Released as a Covered Model with Enterprise Frontier Safeguards, providing extra data‑retention, safety reviews, and customer‑controlled cloud data handling.

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Official source Last checked Sep 20, 2026, 3:04 PM

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