OpenAI GPT o3 - Box Dev Docs

According to OpenAI, OpenAI GPT o3 is specifically designed to tackle reasoning and problem-solving tasks with increased focus and capability. It spends more time processing and understanding the user’s request, making it exceptionally strong in areas like science, coding, and math compared to previous iterations.

Model details

Item	Value	Description
Model name	GPT o3	The name of the model.
Model category	Premium	The category of the model: Standard or Premium.
API model name	`openai__gpt_o3`	The name of the model that is used in the . The user must provide this exact name for the API to work.
Compliance	N/A	Government compliance frameworks and authorizations applicable to this model.
Hosting layer	OpenAI	The trusted organization that securely hosts the LLM.
Model provider	OpenAI	The organization that provides this model.
Release date	April 16th, 2025	The release date for the model.
Knowledge cutoff date	May 2024	The date after which the model does not get any information updates.
Input context window	200k tokens	The number of tokens supported by the input context window.
Maximum output tokens	100k tokens	The number of tokens that can be generated by the model in a single request.
Empirical throughput	Not specified	The number of tokens the model can generate per second.
Open source	No	Specifies if the model’s code is available for public use.

Additional documentation

For additional information, see official OpenAI GPT o3 documentation.

Last modified on May 27, 2026

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Model details

Additional documentation