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.
Beyond rate limits: scaling access to Codex and Sora
How OpenAI built a real-time access system combining rate limits, usage tracking, and credits to power continuous access to Sora and Codex.
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OpenAI Blog
May 8
Running Codex safely at OpenAI
How OpenAI runs Codex securely with sandboxing, approvals, network policies, and agent-native telemetry to support safe and compliant coding agent adoption.
OpenAI Blog
May 24, 2022
Powering next generation applications with OpenAI Codex
Codex is now powering 70 different applications across a variety of use cases through the OpenAI API.
OpenAI Blog
Jun 11
OpenAI to acquire Ona
OpenAI plans to acquire Ona to expand Codex with secure, persistent cloud environments, enabling long-running AI agents across enterprise workflows.
OpenAI Blog
May 18
OpenAI and Dell partner to bring Codex to hybrid and on-premise enterprise environments
OpenAI and Dell partner to bring Codex to hybrid and on-premise environments, helping enterprises deploy AI coding agents securely across data and workflows.
OpenAI Blog
May 13
Building a safe, effective sandbox to enable Codex on Windows
Learn how OpenAI built a safe, effective sandbox to enable Codex on Windows with controlled file access and network limits.
OpenAI Blog
Apr 21
Scaling Codex to enterprises worldwide
OpenAI launches Codex Labs, partners with with Accenture, PwC, Infosys, and others to help enterprises deploy and scale Codex across the software development lifecycle, and hits 4M Codex WAU.
OpenAI Blog
Sep 29, 2025
Building OpenAI with OpenAI
At OpenAI, we rely on our own technology to help streamline work, scale expertise, and drive outcomes. In our new series, OpenAI on OpenAI, we share lessons to help other organizations do the same.
OpenAI Blog
Jan 29
Inside OpenAI’s in-house data agent
How OpenAI built an in-house AI data agent that uses GPT-5, Codex, and memory to reason over massive datasets and deliver reliable insights in minutes.
OpenAI Blog
Jun 10
Access OpenAI models and Codex through your Oracle cloud commitment
Access OpenAI models and Codex through Oracle Cloud, using existing commitments to build and deploy AI with enterprise security and governance.
OpenAI Blog
Feb 4
Unlocking the Codex harness: how we built the App Server
Learn how to embed the Codex agent using the Codex App Server, a bidirectional JSON-RPC API powering streaming progress, tool use, approvals, and diffs.
OpenAI Blog
Apr 16, 2025
Introducing OpenAI o3 and o4-mini
Our smartest and most capable models to date with full tool access