18+ Only — This directory lists adult AI tools. Read our Terms

Glossary · Companion & roleplay

Memory window

How far back the companion can reliably recall past messages and events. Free tiers typically cap at 10-20 messages; premium tiers on top platforms advertise 30-90 days of persistent memory across sessions. The biggest free-vs-paid UX differentiator.

See also

AI companion — A conversational AI presented as a persistent character — girlfriend, boyfriend, friend, therapist. The defini…
Character drift — When an AI companion loses its persona over a long conversation and responds as a generic assistant. A key rel…

← Browse all 40 glossary terms