OpenAI Expected to Launch Persistent AI Agent 'O' at DevDay on Sept 29

OpenAI is expected to introduce a persistent AI assistant codenamed "O" at its DevDay event on September 29, 2026, according to tipster Alexey Shabanov.

Clues spotted in ChatGPT's configuration files include "O" as a display name and an email address with the suffix "-o." The reports suggest the agent may be designed to operate continuously beyond standard chat interactions and could have its own identity.

The project may also be linked to "Aeon," which has previously been reported as the name of OpenAI's persistent agent initiative. Details remain unclear regarding the tasks it will support, its permissions, or whether it will include scheduled tasks, memory features, or a timeline for wider availability.

Earlier rumors have also mentioned that OpenAI was exploring a doughnut-shaped hardware device, and if these projects are connected, the single-letter codename could serve as a playful reference.