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Sweep 02 Oct 2026 · 18:55Z Build v2.1.288 509 read Stable v2.1.285 Latest v2.1.288 Next v2.1.288 Feeds RSS JSON llms.txt llms-full.txt Unofficial

Claude Code v2.1.288 ·

Resume check for a ready-made summary matches on a different message

When resuming an old session, Claude Code now checks a ready-made summary against the last message it covers

Under the hood Internal Changes
JSON All of v2.1.288
Under the hoodTier: how much it should matter to you
1Useful: my rating, 1 to 5
2Signal: worth watching, 1 to 5
CompactionArea: what it touches
Internal ChangesKind: in v2.1.288,
Internal ChangesSection of the release
What

When you resume an older session, Claude Code can offer a summary it prepared ahead of time. To decide whether that summary is ready to offer, it now checks the last message the summary covers against the messages in the conversation, instead of the message it was prepared at.

Why

This affects when the resume prompt offers a ready-made summary.

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 doubtHow the prepared summary's record of what it covers has changed is not known.

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