Built at The AI Conference Hack Day 2026

Deja

Déjà vu is a memory landing in your short-term and long-term memory at once. Déjà is your always-on long-term memory. You meet dozens of people, make plans and promises, and hear ideas worth keeping, and most of it is gone by the next day. Say what just happened, by voice or in a sentence, and Déjà turns it into memory you own and can rely on: who you met and what they told you, what you owe and when, what's coming up, what you're thinking through. Browse it, or ask it questions and get answers drawn only from your own words. Mention someone a second time and Déjà already knows them. Never meet anyone for the first time twice. Under the hood, one entry from your phone, a Plaud, or someday a watch fans out to independent memory modules: contacts, CRM and deal flow, ideas, calendar, projects. Every module runs the same five steps: Activation: the module decides, with a calibrated confidence, whether the entry concerns it. Extraction: it pulls out only the facts it cares about, in its own schema. Storage: each fact is kept per user, linked to the exact words it came from. Recall: the module's search tools let an agent answer questions from your memory only, with citations. Explore: each module has a page for browsing what it remembers. Adding a kind of memory is adding a module; nothing else changes. We may plan to open source Déjà while reserving cloud deployment licenses, so anyone can build and deploy their own. See the site and try it yourself at https://hellodeja.com/