What's known about OpenAI's "o" agent before DevDay
OpenAI posted a teaser for an agent called "o" that would keep working after you close the chat. It's still a teaser plus leaks, not a confirmed product.
On September 26, 2026, OpenAI posted a teaser with purple, orange, and green spheres announcing OpenAI's "o" agent: an assistant that would keep working after you close the chat. As of today, it's still a teaser plus leaks, not a confirmed product.
What the official teaser shows
OpenAI gave no technical details in the teaser: just the colored spheres and the name "o". The formal announcement, if it happens, would come at OpenAI DevDay, on September 29, 2026.
What the leaked configuration points to
Leaked internal configuration shows "o" as an internal deployment name and "-o" as an email suffix — a configuration leak, not an already-active feature available to users. That leak would point to an agent with its own identity, which per the same leak would be available on ChatGPT's Pro plans (the $100-a-month plan is that plan's current price, not a new price announced specifically for "o").
The honest caveat: a teaser, not a launch
As of this writing, "o" remains a teaser plus leaks, not a product confirmed by OpenAI. The source reporting the leaked configuration is specialized press (TestingCatalog), not an official company announcement.
How to apply it in your business?
If your team already pays for ChatGPT's Pro plan, it's worth following the September 29 DevDay announcement closely before assuming any feature of "o" is already available on your account. And if your business depends on tasks that today require reopening the chat several times to follow up, this is a case worth watching once OpenAI confirms (or denies) the leaked details.
If you're interested in how OpenAI is already monetizing ChatGPT's free plan in the meantime, here's the other angle: ChatGPT Ads now shows ads on the free plan.
Frequently asked questions
What is OpenAI's "o" agent?
It's the name of an agent OpenAI showed in a teaser on September 26, 2026, that would keep working after you close the chat. It remains unconfirmed as a product.
When would "o" be officially announced?
If it happens, it would be at OpenAI DevDay, on September 29, 2026.
Is "o" already available to users?
No. As of today it's a teaser plus a leaked internal configuration, not a confirmed launch.
Does using "o" cost $100 a month?
That figure is the current price of ChatGPT's Pro plan, not a new price announced specifically for "o".
Conclusion
As of September 28, 2026, OpenAI's "o" agent is a teaser and leaks, not a shipped product — the date to watch is DevDay, September 29, when OpenAI could confirm or deny what's already leaked.