Celestin splits what you ask into its most specific pieces and gives each one to the model measured best at exactly that piece, then puts it together and checks it.
Not one chatbot: every lab's strongest models, and Celestin deciding which one does each part.
Live web search, with the sources read and cited. Deep research when being thorough matters.
Built and running right here, beside the chat, with the code one click away.
Photos, posters, ads and short films, by the models rated best at them, as soon as they're connected.
Songs, beats and voiceovers, in any style or language, as soon as their models are connected.
Word, PDF, slides and spreadsheets, ready to download.
Flashcards, quizzes, mind maps and podcasts, from any topic or your own notes.
No rules written in advance: every request is read by a model, and Celestin decides for itself.
Not "research" but "the five moments a 9-year-old finds most gripping, with dates". Each piece is one precise skill, and later pieces build on earlier ones.
Weighed on 101 measured skills from millions of real votes, re-ranked every day, plus Celestin's own record of which model's work holds up at what.
The best writer for the answer combines the pieces, the model best at that field checks every fact, and what it finds is fixed before you see it.
The access the best assistants have, all switched on from the start.
Read from the leaderboards every day. A new model counts the day it's rated, and no lab is favoured by hand.
Your chats, projects and memory stay on your device and export to a file whenever you want. No keys of yours to look after.
Free credits that come back every few hours. Nova, Pulsar and Quasar give you far more for a month, and a credit pack keeps you going whenever you don't want to wait.
No single model is best at everything. Labs leapfrog each other every few weeks, and the best coder is rarely the best researcher or the best writer. Celestin keeps track so you don't have to.
A fast model reads every request and decides what would serve you (an answer, an app, a video, research...) and how to do it. Then each part goes to the models that score highest on exactly that work: on LMArena's leaderboards (which answer people prefer) and on Epoch AI's benchmarks (whether the code passes its tests, the maths is right, the facts are true), at the price that buys that quality and no more. You can also choose Fast, Max, or one model yourself.
Only if you run its small connector on your computer, and it asks before it changes anything. Without it, Celestin still runs code, searches and builds right in your browser.
Everyone with an account gets free credits that come back every 5 hours. For more, a plan (Nova, Pulsar or Quasar) gives you far more for a month (no auto-renewal), and a credit pack tops you up instantly.
Your chats, projects and memory stay in this browser. What you ask goes through Celestin's server to the model answering it, and isn't kept there.
The best one for each part, picked for you. "Show models used" on any answer shows who did what, and why.
It already knows who should answer it.