GPT-5.5 Pro
Version of GPT-5.5 that produces smarter and more precise responses.
Private by design
When you use GPT-5.5 Pro 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
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Context window
1,050,000 tokens
≈ 788,000 words · about 3,150 pages
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Max output
128,000 tokens
≈ 96,000 words in a single answer
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Knowledge cutoff
December 2025
its training cutoff
- Reads images you attach
- Uses tools
Modalities
- Text Input and output
- Image Input only
- Audio Not supported
- Video Not supported
Reasoning effort
Default: High.
Features
- Streaming Not supported
- Function calling Supported
- Structured outputs Supported
- Fine-tuning Not supported
Tools
- Web search Supported
- File search Supported
- Image generation Supported
- Code interpreter Supported
- Hosted shell Supported
- Apply patch Not supported
- Skills Not supported
- Computer use Not supported
- MCP Supported
- Tool search Not supported
Ready to try it?
Polymeti is currently invite-only.
Sign inBring your own API key · Your chats stay in your browser