Unverified50% confidenceFactExact time
Long-horizon memory refers to a system's ability to retain and recall user-related information across multiple sessions over timescales of days or even weeks, usually requiring external storage and retrieval mechanisms.
1
Sources
50%
Confidence
Long-term
Relevance
10/21/2026
First Seen
Sources
Related Entities
Related Claims
VerifiedServer-side memory mechanisms typically target two categories of data that need to persist across sessions: long-term explicit memory and implicit user profiles.78% similarUnverifiedCross-agent memory is typically divided into short-term session memory, long-term vectorized memory, and shared blackboard-style state storage, requiring handling of write conflicts, expiration, and privacy boundaries.77% similarVerifiedLong-term memory stores persistent facts that must survive across sessions and runs, such as project decisions, environment configurations, and edge cases.76% similarUnverifiedNPCs maintaining character consistency across time spans of hours or even days places far greater demands on the design of long-term memory storage and retrieval than single-turn dialogue does.76% similarUnverifiedDevin's Memory belongs to the semantic layer of long-term memory, while Dreaming is closer to metadata management of long-term memory.75% similar
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