o3-pro

o3-pro

The o3 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 consistently better answers.
Azure OpenAI
Direct from Azure
Version: 2025-06-10

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About this model

The o3-pro model is available only in the Responses API to enable support for multi-turn model interactions.

Key model capabilities

  • o3-pro is the latest additon to the o3 model family that is targeted for advanced problem solving by thinking harder and providing consistently better answers.
  • The o3-pro model is available only in the Responses API to enable support for multi-turn model interactions.
  • Complex Code Generation: Capable of generating algorithms and handling advanced coding tasks to support developers.
  • Advanced Problem Solving: Ideal for comprehensive brainstorming sessions and addressing multifaceted challenges.
  • Instruction Following and Workflow Management: Particularly effective for managing workflows requiring shorter contexts.
  • Text and image inputs and text output.
  • Structured outputs and function calling.

Quick facts

Model providerAzure OpenAI
TypeChat completion, Responses
LifecycleGenerally available (GA)
Input typetext, image
Output typetext
Context window200k
Token limits100k output