{"version":"2.1.323","anchor":"precomputed-compaction-can-arm-beside-a-turn","canonical_anchor":"precomputed-compaction-can-arm-beside-a-turn","heading":"Conversation summaries can be prepared ahead of time while a turn is running","tier":"notice","area":"Compaction","scope":"individual","heads_up":false,"url":"https:\/\/changelogs.core-directive.com\/v\/2.1.323\/e\/precomputed-compaction-can-arm-beside-a-turn","release_url":"https:\/\/changelogs.core-directive.com\/v\/2.1.323","markdown":"### Conversation summaries can be prepared ahead of time while a turn is running\n\nClaude Code can now start preparing a compaction summary while a turn is still in progress, not only while it sits idle\n\n**Unclear.** The conditions that decide whether this runs were not worked out, so it is unclear whether it is active for anyone.\n\n**What**\n\nCompaction is how Claude Code shrinks a long conversation: it replaces older messages with a summary so the conversation keeps fitting in the model's memory. Claude Code can prepare that summary in advance. That preparation can now start beside a turn, while Claude is still working on your request. Before, it could only start while the session was idle.\n\nThe preparation shows up in status as `compact_beside_turn`.\n\n**Why**\n\nWhen the conversation fills up, the summary may already be ready, which could shorten the wait before work continues.\n\n- Area: Compaction\n- Tier: You'll notice\n- Useful: 2\/5\n- Signal: 2\/5\n- Scope: individual\n- Heads-up: no"}