Private by design
Your chats, images and voice are created and stay on your device. No server reads along, no training on your data.
Your private AI character studioYour characters.
Your characters.
Your conversations.
Your device.
Personarium is the desktop app for AI characters and roleplay chat — chat, images and voice run locally on your machine, with your own API keys.
App screenshot: character chat
Why Personarium
Quiet, clear, and entirely yours.
Your own keys
Connect OpenRouter with one click, or fal for images and read-aloud. You only pay for what you use, directly to the provider.
SillyTavern-compatible
Import and export character cards in V2 and V3 format without loss — your existing collection just moves in.
Character editor
Model selection
Chat with long-term memory
Setup assistant
What lives where
Stored
Chats, character cards and attachments live locally on your machine. No cloud sync without your permission.
Your keys
Your API keys live in your operating system's keychain. No server reads along.
The Hub
Your Hub account only knows your email address and membership status — never your conversations.
How you get started
Three steps under your own sky.
Install
Download Personarium for Windows, macOS or Linux and start the app.
Connect a key
Connect OpenRouter with one click, or add your fal key for images and read-aloud.
Get going
Create your first character or import an existing character card.
Fair software for people who want to own their tools.
The membership funds the Hub, curation and further development of the app — not your AI costs. Those you pay transparently and without markup, directly to your provider, usually a few cents per message.
Open the cost calculatorFrequently asked questions
What does using it actually cost me?
The membership costs €4.99 a month or €49.90 a year and covers the Hub, curation and updates — not the model costs. Those you pay directly and without markup to your own provider, usually a few cents per message.
Are my chats really private?
Yes. Chats, images and voice are created and stay on your device, and your API keys live in your operating system's keychain. Your account only knows your email address and membership status — never your conversations.
Do my SillyTavern characters work?
Yes. Personarium imports and exports Character Card V2 and V3 without loss — your existing collection just moves in.
When can I get started?
Personarium is pre-launch, in a closed beta. Join the waitlist — you'll be the first to hear when your spot opens up.
Be there for the start
Personarium is in closed beta. Sign up — one email at launch, no marketing.
1 of 150 beta seats claimed