Feature
Remembers, across conversations
Not just within one chat — Nia can recall relevant things you've told it before, found by meaning, not just matching the same words.

Why this matters
Most AI chat starts from zero every time you open a new conversation. Tell it something important on Monday, and by Thursday it's gone unless you happen to be in the same thread. Nia's memory exists specifically to not do that.
How recall actually works
Recall is semantic, not a keyword search — Nia finds what's relevant by meaning, so asking about something in different words than you originally used still surfaces it. That wasn't true on day one of this feature; it took a real fix to move it from matching literal substrings to actual semantic similarity.
It organizes itself
What Nia knows gets clustered into topics automatically, in the background, rather than staying one flat pile of disconnected facts that gets harder to search as it grows. This runs on its own schedule — you don't have to trigger it.
The honest version of how this got built
This feature didn't arrive fully working on day one — it took several real passes to get right, and we've written about that directly rather than pretending it shipped perfect. If you want the actual story, it's on the blog: "Inside the Brain" covers the core system this runs on top of, and "The Memory Feature We Shipped Before It Actually Worked" is a straight account of exactly how long it took to go from announced to reliable.