OpenAI o3
Version: 2025-04-16
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Key capabilities
About this model
o3 is the most capable reasoning model in the o model series, and the first one to offer full tools support for agentic solutions.Key model capabilities
- Multiple APIs support: o3 is available in Responses API and Chat Completions API with Responses API supporting seamless integration with multiple tools and enhanced transparency with the reasoning summary as part of the model output.
- Reasoning summary: In the Responses API, o3 now supports reasoning summary in its output providing more insights into its thinking process. This enhances the explainability and the effectiveness of the resulting actions and tools that leverage the insights for even better outcomes.
- Multimodality: With enhanced vision analysis capabilities, o3 expands its reasoning capability to process and analyze visual data, extracting valuable insights and generating comprehensive text outputs. This is supported in both Responses API and Chat Completions API.
- Full tools support includes parallel tools calling: o3 is the first reasoning model with full tools support similar to the mainline models including parallel tool calling. Use o3 for the next generation of agentic solutions. This capability is supported in both Responses API and Chat Completions API.
Use cases
See Responsible AI for additional considerations for responsible use.Key use cases
The provider has not supplied this information.Out of scope use cases
The provider has not supplied this information.Pricing
Pricing is based on a number of factors, including deployment type and tokens used. See pricing details here.Technical specs
The provider has not supplied this information.Training cut-off date
The provider has not supplied this information.Training time
The provider has not supplied this information.Input formats
With enhanced vision analysis capabilities, o3 expands its reasoning capability to process and analyze visual data, extracting valuable insights and generating comprehensive text outputs.Output formats
In the Responses API, o3 now supports reasoning summary in its output providing more insights into its thinking process.Supported languages
The provider has not supplied this information.Sample JSON response
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The provider has not supplied this information.Long context
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Training, testing and validation
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Distribution channels
This model is provided through the Azure OpenAI Service.More information
The following documents are applicable:Responsible AI considerations
Safety techniques
The provider has not supplied this information.Safety evaluations
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Acceptable use policy
The provider has not supplied this information.Quality and performance evaluations
Source: OpenAI The provider has not supplied this information.Benchmarking methodology
Source: OpenAI The provider has not supplied this information.Public data summary
Source: OpenAI The provider has not supplied this information.Model Specifications
Context Length200000
Quality Index0.90
LicenseCustom
Training DataMay 2024
Last UpdatedDecember 2025
Input TypeText,Image
Output TypeText
ProviderOpenAI
Languages1 Language
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