ModelRefs / Episodic Memory — AI Glossary
Episodic Memory — AI Glossary
Memory of specific past events or conversations, typically stored as retrievable transcripts or compressed summaries.
Overview
Contrasts with semantic memory (general facts). Powers personalization and continuity in agent products. Usually implemented as a vector store of conversation chunks with timestamps. Summarization compresses old episodes to avoid context bloat.
Reference details
| Topic | agents |
|---|---|
| Last reviewed | 2026-06-24 |
Related terms
Commonly confused with
Episodic memory records what happened; semantic memory records what is true. The distinction has teeth at write time: a customer changing address is a new episode appended to the log, and simultaneously an overwrite of a semantic fact. Store it only as an episode and the old address stays equally retrievable, because similarity search has no notion of which one is current.
Continue your research
Use these connected ModelRefs sections to compare alternatives, inspect implementation paths, and review the evidence and governance boundaries relevant to Episodic Memory — AI Glossary.
Frequently asked questions
What is Episodic Memory?
Memory of specific past events or conversations, typically stored as retrievable transcripts or compressed summaries.
What concepts are related to Episodic Memory?
Closely related concepts include agentic memory, semantic memory, memory.