Anthropic has extended promotional free access to its frontier reasoning model, Claude Fable 5, until July 12, 2026, at 11:59 PM PT. Eligible subscribers on Pro, Max, Team, and eligible Enterprise tiers can use Fable 5 for up to 50% of their existing weekly subscription limit at no additional charge, though it consumes allocation at a faster rate than models like Sonnet or Opus. After crossing the 50% threshold within a week, users must purchase separate usage credits or switch models. Following the July 12 cutoff, Fable 5 will shift to permanent premium billing, requiring prepaid credits at $10 per million input tokens and $50 per million output tokens. The extended window follows a turbulent launch: initial global launch on June 9, 2026; pulled globally on June 12, 2026, due to US Dept of Commerce export control concerns; redeployed on July 1, 2026, with modified safety classifiers; and promotional access extended on July 7, 2026, after user capacity backlash. Fable 5 features a 1-million token context window and a 128k output limit, powered by an “always-on” adaptive thinking routine, with early enterprise testers like Stripe reporting it can handle multi-day agentic projects such as full-codebase migrations.