Dev Tooling Updates
Notable changes in the developer ecosystem — pricing shifts, SDK releases, deprecations, and policy changes with what they mean for your workflow.
Claude Fable 5: Anthropic's Mythos-class model goes public
Claude Fable 5 tops SWE-Bench Pro at 80.3% and is the same model as Mythos 5 with safeguards on — not scaled down. Pricing, ranking, and access.
Claude Agent SDK and `claude -p` move to a credit pool
From June 15, 2026, Claude Agent SDK and `claude -p` stop drawing on subscription rate limits and start draining a separate monthly credit pool.