o3 Mini
OpenAI is retiring this model on 23 October 2026. After that date it stops answering, so it's not a good choice for new work.
A small model alternative to o3
Private by design
When you use o3 Mini in Polymeti, your browser sends the message to OpenAI directly, with your own API key. Nothing passes through a Polymeti server.
- We never see your conversation.
- Your API key is stored in your browser, not on our servers.
- Your chat history lives on your device. Back it up to your own Google Drive if you want it on more than one.
What it can do
-
Context window
200,000 tokens
≈ 150,000 words · about 600 pages
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Max output
100,000 tokens
≈ 75,000 words in a single answer
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Knowledge cutoff
October 2023
its training cutoff
- Uses tools
Modalities
- Text Input and output
- Image Not supported
- Audio Not supported
- Video Not supported
Reasoning effort
Features
- Streaming Supported
- Function calling Supported
- Structured outputs Supported
- Fine-tuning Not supported
Ready to try it?
Polymeti is currently invite-only.
Sign inBring your own API key · Your chats stay in your browser