Claude Fable 5 Rollout Resumes in Phases: Code Leak, Gray Testing, and June 26 Deadline

Claude Fable 5 appears to be rolling out in batches. Starting June 24, some users saw the Fable 5 model option in the Claude mobile app and Claude Code v2.1.190 and could interact with it. Amazon AWS also showed a Fable 5 access point, but required US ID verification and scenario review. An Anthropic official later denied this as a UI bug.

Code and Subscription Changes

Claude Code v2.1.190 added the string "You've used your included Fable 5 usage for this week" and removed the old "purchased separately from your plan." This suggests Fable 5 may be integrated as a weekly quota within subscription plans, rather than a separate paid product.

Gray Testing Details

• Visible only to some users and effective only in specific conversations.
• A Canadian user successfully sent messages, hinting at loosened regional restrictions.
• Some users report degraded output quality compared to Opus 4.8.

Negotiation and Political Background

According to WIRED, Anthropic CEO Dario Amodei was seen as an "oddball" by US government officials due to his communication style, leading to stalled negotiations. Co-founder Tom Brown took over, improving communication, and both sides began discussing technical safety proofs. A bipartisan US congressional panel demanded the Commerce Department provide a clear response on lifting the Fable 5 ban by June 26, marking that date as a key milestone.

Industry Impact

Rumors of Fable 5's return triggered a chain reaction: OpenAI was reported to be releasing GPT-5.6 soon, but CEO Altman said it would be rolled out in phases. On the prediction platform Polymarket, bets on Fable 5 returning before June 26 briefly exceeded 30%. Meanwhile, Claude Sonnet 5 (Fennec) is rumored to be imminent, with performance close to Opus 4.8, and existing Sonnet usage limits have been removed.