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Sweep 22 Oct 2026 · 21:04Z Build v2.1.309 528 read Stable v2.1.308 Latest v2.1.309 Next v2.1.309 Feeds RSS JSON llms.txt llms-full.txt Unofficial

Claude Code v2.1.305 ·

Memory extraction gets a quick first look that can skip the full run

Before extracting memories, a small model now checks whether a memory write is likely and can skip the full extraction pass

Group of 2 Under the hood Internal Changes
JSON All of v2.1.305
Under the hoodTier: how much it should matter to you
3Useful: my rating, 1 to 5
3Signal: worth watching, 1 to 5
MemoryArea: what it touches
Internal ChangesKind: in v2.1.305,
Internal ChangesSection of the release

Unclear Not settled whether anything runs this quick check in this release.

What

Claude Code can extract memories (notes saved for later sessions) from recent exchanges in the background.

  • A cheap first pass now asks a small model whether the recent exchanges are likely to produce a memory write, answering {"write_likely": true|false}.
  • If it fails, the full pass still runs.
  • Its verdicts (yes, no, empty or error) are recorded in usage reporting, alongside a new entry about subagent work in remote sessions.
  • A new route skips its work when memorySave is set.

Why

Background memory extraction can skip model calls when nothing is likely to be saved, which can change when memories get written.

How sure we are
Something disagreesSomething we can check disagrees with this entry, or the writer said they could not settle it.
The writer flagged doubtNot settled whether anything runs this quick check in this release.

See this entry in the whole of v2.1.305 →

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