OpenAI Blog
Aug 18
Asana completed a years-long code migration in 2 weeks with Codex
Asana used OpenAI Codex to replace an outdated testing system in two weeks, with about $12K in model and infrastructure costs.
How We Used Codex to Ship Sora for Android in 28 Days
OpenAI shipped Sora for Android in 28 days using Codex. AI-assisted planning, translation, and parallel coding workflows helped a nimble team deliver rapid, reliable development.
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OpenAI Blog
Aug 10, 2021
OpenAI Codex
We’ve created an improved version of OpenAI Codex, our AI system that translates natural language to code, and we are releasing it through our API in private beta starting today.
OpenAI Blog
Aug 18
Asana cleared 5 years of engineering work in 2 weeks with Codex
Asana leveraged OpenAI Codex to overhaul an antiquated testing system, accomplishing in just two weeks what had previously required five years of engineering effort. The project cost approximately $12,000, demonstrating a rapid and cost-effective solution to a long-standing technical challenge.
OpenAI Blog
Jan 14
How OpenAI Uses Codex to Accelerate Engineering
A detailed look at how OpenAI teams use Codex to understand code, refactor systems, improve performance, boost velocity, and enhance engineering workflows.
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 14
Sea's View on the Future of Agentic Software Development with Codex
Sea Limited's CPO explains why the company is deploying Codex across engineering teams to accelerate AI-native software development in Asia.
OpenAI Blog
May 28
How Endava builds an agentic organization with Codex
Learn how Endava uses Codex to build an agentic organization, accelerating software delivery and reducing requirements analysis from weeks to hours.
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
Feb 13
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.
OpenAI Blog
Jul 16
How Codex became a collaborator for OpenAI’s creative team
How OpenAI’s creative team uses Codex to build custom creative tools, accelerate ideation, and prototype faster with context-aware AI.
OpenAI Blog
Oct 6, 2025
Codex is now generally available
OpenAI Codex is now generally available with powerful new features for developers: a Slack integration, Codex SDK, and admin tools like usage dashboards and workspace management—making Codex easier to use and manage at scale.
OpenAI Blog
May 22
How Virgin Atlantic ships faster with Codex
How Virgin Atlantic used Codex to ship its revamped mobile app on a fixed holiday travel deadline, reaching near-total unit test coverage and zero P1 defects.