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Claude Code 2.1.239 Adds a `/claude-api upgrade` Migration Command and Surfaces the 1.1x US-Only-Inference Premium in Cost Estimates
The 2.1.239 release, shipped just ahead of 2.1.241 on 2026-08-23, is the substantive one in this batch. Notable entries for builders: cost estimates now include the 1.1x US-only-inference premium for data-residency workspaces, a new `/claude-api upgrade` command migrates Python projects from `anthropic` 0.x to 1.x, usage-limit messages now say whether it is the session or the weekly limit resetting, and WebFetch no longer retains expired content for the whole session instead of the documented 15 minutes. The two releases after it, 2.1.240 and 2.1.241, are listed only as bug fixes and reliability improvements.
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