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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

Released2025-06-10
LineOpenAI · O Pro
WeightsAPI only
Context200K tokens
Max output100K tokens
Inputimage, text
Outputtext
ReasoningYes
Tool callingYes
Knowledge cutoff2024-05
API ido3-pro

Pricing

Input$18.00 / 1M tokens
Cached input$11.00 / 1M tokens
Output$40.00 / 1M tokens

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

ProviderModel id
Abacuso3-pro
Eden AIo3-pro
Heliconeo3-pro
Kilo Gatewayo3-pro
NanoGPTo3-pro
OpenAIo3-pro
OpenRoutero3-pro
Poeo3-pro
Vercel AI Gatewayo3-pro

9 hosts serve this model at the price above · the maker's documentation

O Pro: every version

VersionReleasedContextInput
o3-proCurrent2025-06-10200K$18.00

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.
ProprietaryReasoning200K context