How OneChater works
OneChater lets you chat with GPT, Claude and Gemini in one place, with a persistent memory that follows you across every model. You bring your own API keys and pay each provider directly — no markup, no lock-in.
1. Connect your API keys
Paste your OpenAI, Anthropic or Google keys once. They're encrypted server-side and tied to your account, then restored on any device when you sign in. Set it up once and you're done.
- AES-256 encryption
- Restored across devices
- Bring your own key (BYOK)
- Pay providers directly
2. Chat with every model
Write once and get answers from GPT, Claude and Gemini in real time, side by side. Compare their responses and pick the best — or merge them into a single answer with Fusion.
- Real-time streaming
- Side-by-side compare
- Switch models mid-conversation
3. Memory learns as you go
After every chat, OneChater extracts what matters — your projects, preferences and decisions — into a private memory profile you fully control. Next time, every model already knows your context.
- Automatic capture
- Editable memory profile
- Portable across all models
Frequently asked questions
Do I need a subscription?
No. OneChater is bring-your-own-key: you connect your own provider API keys and pay OpenAI, Anthropic or Google directly with zero markup.
Can I switch models without losing context?
Yes. Your memory profile travels with you, so moving from GPT to Claude or Gemini keeps your projects, preferences and history intact.
How long does setup take?
About 60 seconds — paste your API keys and start chatting. Keys are encrypted and restored automatically on any device.
Up and running in 60 seconds
Connect your keys and chat with every model from a single place.
Start free