Model registry / OpenAI / O Pro / o3-pro
o3-pro
High-effort o3 tier for difficult technical reasoning and careful answers
Line
O Pro
Weights
API only
Released
2025-06-10
Context
200K
Input
$18.00 / 1M
Output
$40.00 / 1M
Max output
100K
Coverage
not covered yet
Overview
o3-pro is a high-effort tier for difficult technical reasoning and careful answers. It is the first version of the o-pro line in the registry. It has a context window of 200,000 tokens and a maximum output of 100,000 tokens. Pricing starts at $18.00 per million input tokens and $40.00 per million output tokens, with cached input at $11.00 per million. The weights are not open. It supports reasoning mode, tool calling, accepts image and text, and returns text. Knowledge cutoff is May 2024. It is served by 9 hosts.
Specs
Pricing
First version of its line in the registry.
Range across the hosts that serve it: up to $22.00 per 1M input tokens.
Strengths
- Handles 200k token context window
- Generates up to 100k output tokens
- Supports tool calling and reasoning mode
- Accepts image and text inputs
- Served by 9 hosts for availability
Best for
- Reach for it for difficult technical reasoning
- Reach for it for careful answers on complex problems
- Reach for it for long-context analysis with image input
- Reach for it for tool-assisted problem solving
How to access
9 hosts serve this model at the price above · the maker's documentation
O Pro: every version
The registry keeps the six most recent versions of a line. Older ones stay in the file and can be surfaced without a rebuild.
FAQ
- What is the context window?
- The context window is 200,000 tokens.
- What is the price per token?
- From $18 per million input tokens and $40 per million output tokens, with cached input at $11 per million.
- Can it process images?
- Yes, it accepts image and text inputs and returns text.