OpenAI Blog April 16, 2025

OpenAI o3 and o4-mini System Card

OpenAI o3 and OpenAI o4-mini combine state-of-the-art reasoning with full tool capabilities—web browsing, Python, image and file analysis, image generation, canvas, automations, file search, and memory.

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OpenAI Blog

Jan 31, 2025

OpenAI o3-mini

OpenAI Blog

Apr 16, 2025

Introducing OpenAI o3 and o4-mini

Our smartest and most capable models to date with full tool access

OpenAI Blog

May 23, 2025

Addendum to OpenAI o3 and o4-mini system card: OpenAI o3 Operator

We are replacing the existing GPT-4o-based model for Operator with a version based on OpenAI o3. The API version will remain based on 4o.

llms

OpenAI Blog

Sep 12, 2024

Introducing OpenAI o1

OpenAI Blog

Jan 31, 2025

OpenAI o3-mini System Card

This report outlines the safety work carried out for the OpenAI o3-mini model, including safety evaluations, external red teaming, and Preparedness Framework evaluations.

safety

OpenAI Blog

Dec 17, 2024

OpenAI o1 and new tools for developers

Introducing OpenAI o1, Realtime API improvements, a new fine-tuning method and more for developers.

fine-tuning

One email a morning, machine-written

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