Unverified50% confidenceReleaseExact time
The LangGraph vendor's fix, PR #7586, introduces DeltaChannel: for a 500-turn thread, the default add_messages configuration writes 221MB, DeltaChannel with snapshots every 50 steps writes 10.53MB, and without snapshots writes 1.98MB; the solution landed in LangGraph 1.2.0 (May 12, 2026), marked as beta and opt-in.
1
Sources
50%
Confidence
Medium-term (~90 days)
Relevance
10/13/2026
First Seen
Valid until: 1/11/2027
Sources
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