GUIDE
"AI memory" gets used to mean several different things, and the confusion matters, because the fix for one kind does nothing for another. Some tools remember facts about you. Some store documents you can search. None of them, by default, carry the full thread of a long conversation into the next one. Here is what each type actually does and where the gaps are.
Preference and knowledge memory are about facts and files, not the live state of a conversation. When a thread gets long and the model starts dropping or under-weighting earlier messages, none of those features help, because the thing you have lost is the conversation itself, not a stored fact. That gap is conversation memory, and it is the one the major tools leave open.
thredly is conversation memory, with search built in. It runs in the background while you use ChatGPT, Claude, Gemini, or Perplexity, and turns each session into a structured summary you can paste into a fresh chat to keep going. Every summary lands in one searchable dashboard, so the search gap is covered too. You get the handover and the archive without doing anything manually.
Not for long conversations. ChatGPT Memory stores small facts about you across chats, but it does not preserve the content of a specific session. If a thread gets too long or you start a new one, Memory will not carry the work across.
No. The context window is how much the model can hold in one active conversation. Conversation memory is about moving the important parts of that conversation into a new chat once the window fills or the thread drifts.