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ChatGPT's Codex just got a huge upgrade that makes it more powerful than ever - what's new

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Elyse Betters Picaro / ZDNET

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ZDNET's key takeaways

OpenAI makes Codex available to all developers and teams.

Slack integration and SDK bring AI into coding workflows.

Admin tools add visibility, control, safer automation for enterprises.

OpenAI announced yesterday that Codex, its programming agent, is now "generally available." I'll deconstruct the marketing speak of "generally available" in a minute, because it's a bit of a story. But before that, let's discuss some new capabilities OpenAI introduced in Codex. They're cool.

(Disclosure: Ziff Davis, ZDNET's parent company, filed an April 2025 lawsuit against OpenAI, alleging it infringed Ziff Davis copyrights in training and operating its AI systems.)

Slack integration

I have often said that coding with the help of a chatbot feels a lot like talking to a colleague in Slack. There are a number of colleagues I've worked with for years. But not only haven't we ever met, we've also never spoken using any medium other than Slack.

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