Long-term memory (in AI companions) — definition and meaning
An AI companion's ability to recall facts and context from prior conversations across days, weeks, and months.
Last reviewed 2026-05-25
Long-term memory in AI companions is what makes a relationship feel like a relationship. Without it, every conversation starts over. Implementations vary: simple retrieval, vector search over conversation history, hierarchical summarization, structured fact stores. We rate every platform on memory consistency at 1 day, 7 days, and 30 days into a relationship.
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What is long-term memory (in ai companions)?
An AI companion's ability to recall facts and context from prior conversations across days, weeks, and months.
How is "long-term memory (in ai companions)" used in AI companion apps?
Long-term memory in AI companions is what makes a relationship feel like a relationship. Without it, every conversation starts over. Implementations vary: simple retrieval, vector search over conversation history, hierarchical summarization, structured fact stores. We rate every platform on memory consistency at 1 day, 7 days, and 30 days into a relationship.
What other terms relate to long-term memory (in ai companions)?
Related terms in the AI companion space include: Memory canon, AI companion. Each has its own glossary entry on /glossary.