Athena
Built at Meta Global AI Developer Hackathon · Oct 26, 2026 · Remote

Most memory apps record everything and hope you'll search it later. We wanted something closer to a second brain: a thing that notices, connects, and keeps quiet until it actually matters. Athena is a small camera you clip on. It sees what you see and hears what's said around you, and turns your day into a memory graph: places, people, plans, and the exact moment each thing came from. During the day an agent watches that graph and decides whether to speak. Almost always it doesn't. When it does, it's because something connects: you're at the supermarket and you wanted milk, or you're about to buy peanuts for a friend someone mentioned is allergic. At night, Athena dreams. It replays the day against everything before it and decides what to believe. A routine needs several separate days. One visit to a clinic stays a one-off. If someone else says "I have class at 6", that's their plan, not yours, and anything you only heard secondhand stays marked as not verified. When you correct something, the old fact isn't deleted, it's superseded, and when Athena isn't sure, it asks you first. Every belief points back to the recording it came from, so you can always ask "why do you think that?" and get a real answer.