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Sweep 22 Oct 2026 · 04:32Z Build v2.1.308 527 read Stable v2.1.308 Latest v2.1.308 Next v2.1.308 Feeds RSS JSON llms.txt llms-full.txt Unofficial

Claude Code v2.1.247 ·

Cached prompt parameters no longer leak between sessions

Cached prompt settings no longer leak from one session into another.

You'll notice Bug Fixes
JSON All of v2.1.247
You'll noticeTier: how much it should matter to you
3Useful: my rating, 1 to 5
3Signal: worth watching, 1 to 5
SessionsArea: what it touches
Bug FixesKind: in v2.1.247,
Bug FixesSection of the release
What

The saved last-prompt parameters record now stores the root session id, and the resume path, the reuse path and the freshness check all reject the cache when that id does not match the current session. Previously only the model was compared, so parameters could carry across sessions in the same process.

Details
  • The record also gained a flag marking parameters prompted for the session model.
Evidence

promptForSessionModel

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

See this entry in the whole of v2.1.247 →

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