o3 Pro

openai/o3-pro

A chat model with a 200K-token context window, at $21.00 per million input tokens and $84.00 per million output tokens.

Details

Maker: openai
Kind: Chat
Context window: 200,000 tokens
Max output: 100,000 tokens
Input: $21.00 per million tokens
Output: $84.00 per million tokens
Capabilities: Reasoning, tool use, vision, file input, web search
Takes: Text, image, pdf
Returns: Text
Zero data retention: Yes, on every provider
No training on requests: Yes, on every provider
Released: 2025-06-10
Newer model: openai/gpt-6.1-solReleased later by the same maker, costs no more, and lists the same capabilities. Compare the two

Description

The o-series of models are trained with reinforcement learning to think before they answer and perform complex reasoning. The o3-pro model uses more compute to think harder and provide consistently better answers.

Call it

curl

curl https://phantom.codes/v1/chat/completions \
  -H "Authorization: Bearer $PHANTOM_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "openai/o3-pro",
    "messages": [
      {"role": "user", "content": "Hello"}
    ]
  }'

Set PHANTOM_KEY to your key. Any OpenAI client works with the base URL https://phantom.codes/v1.

Get a key Compare with another model