Anthropic stated it will begin restoring access to Claude Fable 5 on Wednesday after the Department of Commerce lifted export controls on the model and Mythos 5. The move leaves open questions about international rollout and continued limits on Mythos 5.

It remains unclear whether Fable 5 will roll out to everyone, including users outside the United States.
https://x.com/AnthropicAI/status/2072106151890809341
References to KYC recently spotted on Anthropic's website have raised concerns that models like Fable could initially be restricted to those in the United States.
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Anthropic has replaced Claude Sonnet 4.6 with Sonnet 5 as its default medium-sized model for free and Pro users, emphasizing stronger agentic performance at lower cost than larger models. The update narrows the gap to Opus 4.8 while introducing introductory pricing through August 31, 2026, and expanded rate limits.