Compared

Three ways to give an assistant a memory.

Every AI product now has some answer to "remember this." The differences are in where the memory actually lives, whether more than one assistant can use it, and what happens to it if you change your mind about a tool.

General characteristics of each approach. Check a specific provider’s current terms before relying on any row.
Characteristic	Memory built into each app	A hosted memory service	Query me
Where it is stored	Inside that one company’s product	On the provider’s servers	A folder on storage you already own
Shared across different AI tools	No, each app keeps its own	Usually, through their integrations	Yes, the same documents, read by each
Can you read and edit it yourself	Partly, through a settings screen	Through their interface	Yes, they are plain documents
If you stop using the product	Memory remains inside that app	Depends on the provider's export and access terms	The files stay in your own storage
Ongoing cost	Part of that subscription	Another monthly subscription	One payment, once
Who maintains it as the tools change	The vendor, for their app only	The provider	Published releases say what changed and what was retested

Query me is not the first product to address shared AI memory, and does not claim to be. See the evidence page for what has actually been tested, and pricing for the founding offers.