OpenAI is testing a new always-on assistant named o. References to this unannounced feature briefly appeared online before being removed.
Users on X spotted the feature listed as a benefit of the $100 ChatGPT Pro plan. The listing referred to the tool as o, your always-on assistant.
The $100 plan reference grouped the tool alongside increased Work and Codex usage. Other listed perks included maximum memory and 100GB of file storage.
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Code references also point to email integration for the tool. A dynamic configuration displayed a display_name of o alongside an email_suffix of -o.
This configuration hints at future email handling capabilities. An always-on assistant could maintain background tasks while users are away from the active interface.
OpenAI has not confirmed the project
OpenAI has not officially confirmed the project. Separate references point to an internal Aeon system for custom workspace agents, while o seems distinct.
OpenAI confirmed DevDay 2026 will take place on September 29 in San Francisco. The upcoming event is expected to feature technical sessions, demos, and new tool announcements.
