Source Intelligence

DisclaimerUnofficial, and not affiliated with Anthropic. Nearly all of this is read straight out of what ships: npm bundles, captured prompts, published docs. Anthropic's own notes go in verbatim, marked as theirs. The rest is my reading, and every entry carries the strings behind it. If one looks wrong, vote it down and say why.

All of v2.1.238 Home All releases olderv2.1.237 v2.1.239newer
Claude Code v2.1.238

Session reasoning effort and configured effort are now tracked separately

You'll notice
Useful3 Signal2
Reasoning Effort

Clearing in-session reasoning effort now falls back to your configured effort instead of nothing.

What

Effort is stored as two values, the one the running session picked and the one resolved from CLI flags, environment and settings, with everything reading the session value first and the configured value otherwise. Clearing the in-session effort now falls back to your configured effort instead of to nothing, and a settings-derived effort survives session-level changes.

Details
  • The status line, model picker, permission-layer override and the effort_level telemetry field all read through the same resolver.
  • A helper clears the last-reported effort so the current value gets re-reported after a change.
Evidence

return e.sessionEffort ?? e.settingsEffort;, sessionEffort

Strings lifted out of the shipped bundle, so the claim above can be checked against them.

Related

Other releases about the same thing. Found by shared names or similar wording; neither means one caused the other.

See this entry in the whole of v2.1.238 →