vesper.
Chat, write, and work with your files, all powered by AI that runs right on your device.
No data sharing, no accounts, no one looking over your shoulder.
For years, "AI" meant a connection to a data center. You typed, your words traveled, and somewhere far away a machine you'd never see decided what to keep.
Vesper removes the distance. The mind runs on your own device, so there's no server waiting on the other end, no account holding your history, and no meter counting your questions.
Turn on airplane mode, and it keeps thinking. Walk into a dead zone, and it keeps answering. Close the app, and your conversations are exactly where you left them: with you.
It's not a service you rent. It's something you own.
Private AI
Vesper was built to run locally on modern hardware. AI processing happens on your device, with zero trips to a data center or requiring an internet connection.
Chat, work and get stuff done knowing that your data stays yours.
The only time Vesper will contact the web is either downloading models during setup, or when the optional Web Research tool is enabled to gather current information it hasn’t been trained on.
No account.
Download a model and get to work! No need for an email address, credit card number or subscription plan. Use it as much as you want, there’s no rate limit to hold you back.
It works with no connection.
Flights, subways, tunnels, ships, rural roads, a country you haven't bought roaming for. An assistant that works when the network doesn't is a different product from one that doesn't.