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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 v2.1.251 ·

Memory context fetched in the background before a turn starts

Memory context can be fetched in the background as a turn begins, behind an off flag.

Nothing to try yet In Development
JSON All of v2.1.251
Nothing to try yetTier: how much it should matter to you
2Useful: my rating, 1 to 5
4Signal: worth watching, 1 to 5
MemoryArea: what it touches
In DevelopmentKind: in v2.1.251,
What probably matters to youSection of the release

Background memory prefetch sits behind the same off-by-default memory flag.

What

New code starts fetching memory context for the current host as soon as a query begins and joins the result later, recording how long the fetch took and how much of it overlapped with the start of the turn. It sits behind the same off-by-default memory flag as the stale-read warnings.

Details
  • Timing is reported as a duration in milliseconds plus an overlap measure.
Evidence

memory_context_fetch_ms

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

See this entry in the whole of v2.1.251 →

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