OpenAI DevDay Leak Points to a Persistent Agent Called O, and the Clue Was Hiding in ChatGPT Itself

By Omar aka Crypt0 · Sep 27, 2026

Three days before OpenAI’s DevDay, the rumor mill stopped talking about models and started talking about a name. A single letter. O. According to a leak report from Alexey Shabanov, creator of the TestingCatalog tracker, citing an inside source, OpenAI plans to unveil a persistent AI agent codenamed O at its DevDay keynote on September 29 in San Francisco, with Sam Altman opening the show.

The trail is the fun part. Shabanov’s report points to code references already sitting inside ChatGPT, with “O” as a display name and “-o” as an email suffix. Earlier, a user spotted “O” listed as a benefit on the ChatGPT Pro upgrade page before the listing vanished. Then came the teases. The official OpenAI developer account posted “72 hours until OpenAI DevDay. We have been building.” alongside a teaser image. And a known OpenAI insider, Tibo, tweeting “o yes… we are back.” Even the @o handle on X sits suspended, which the report reads as a reservation ahead of launch.

All of this remains unconfirmed, and the report says so itself. Feature boundaries, pricing, and launch timing wait for September 29. Treat it as a rumor with good sourcing. But the shape of the product, as described, is the real story. ChatGPT today waits for a prompt. O, per the leak, would run persistently in the background. You set a goal and ground rules, it works the task continuously, pings you at milestones, and asks for input when it needs a human. The chatbot becomes a colleague with a memory and a to do list.

The timing makes sense because the competition already moved. Elon Musk launched GrokBot, and Meta’s personal agent Muse just topped the free app charts a week after launch. The report frames O as the consumer answer to Aeon, an internal OpenAI project for custom agents inside ChatGPT Workspace built for enterprise teams. Persistent agents are shifting from on demand workspace tools to cloud based companions that ride along in your pocket. OpenAI joining that race at DevDay would raise the bar for everyone building in the space.

Two more rumors orbit the keynote. First, a ChatGPT “Pro Max” tier at $500 per month. Second, wider access to an ultra fast API endpoint, first spotted by developers in May of last year, running on dedicated compute and delivering noticeably lower latency for GPT-6 Sol and GPT-6 Astra calls. For voice conversations and real time coaching, half a second matters more than another hundred thousand tokens of context. Official pricing and limits have yet to be announced.

If the leak holds, September 29 marks the moment the AI assistant graduates from a tool you open to a teammate that keeps working after you close the tab. Builders get a new platform to design for, and the rest of us get a preview of the default interface of the next decade, software that remembers the goal and reports back. Watch the keynote, and keep every headline until then in the rumor column, filed under very interesting.

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