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OpenAI · Language model

o1-pro

openai/o1-pro
  • Language
Released Mar 19, 2025

The o1 series of models are trained with reinforcement learning to think before they answer and perform complex reasoning. The o1-pro model uses more compute to think harder and provide...

Specifications

Context window
200,000 tokens
Max output
100,000 tokens
Input
text, image, file
Output
text
Reasoning
supported
Tokenizer
GPT
Knowledge cutoff
2023-10-31
Moderation
provider-moderated

Supported parameters

Accepted by the model and forwarded as-is by the gateway.

  • max_tokens
  • reasoning
  • response_format
  • seed
  • structured_outputs

Use it

POST /api/v1/chat/completions · MCP chat · full reference

curl https://omnirail.org/api/v1/chat/completions \
  -H "Authorization: Bearer $OMNIRAIL_KEY" -H "Content-Type: application/json" \
  -d '{"model":"openai/o1-pro","messages":[{"role":"user","content":"Hello"}],"max_tokens":300}'