OpenAI is testing a ‘Persistent mode’ for Codex that allows the agent to continue working across sessions, proactively generate follow-up tasks, and remain active until explicitly put to sleep, raising new questions about alignment, sandbox integrity, and user control. By Maxwell Zeff.
OpenAI is developing a proactive, highly persistent version of its flagship AI agent, Codex. Recent code changes reviewed by WIRED reveal a new ‘Persistent mode’ setting in the command line tool, a feature not yet broadly announced but confirmed by an OpenAI spokesperson as currently under testing. This feature represents the latest effort in a race among OpenAI, Anthropic, and Meta to deliver general-purpose agents capable of automating tasks from expense reporting to scheduling appointments.
Persistent mode appears within Codex’s ‘reasoning effort’ menu, where users select computing power, tokens, and time allotments for the model to ’think’ before responding. When enabled, the codebase indicates Codex will ‘continue working until put to sleep’—a stark contrast to existing modes that halt after minutes or hours, even if incomplete. A related feature, ‘proactivity,’ functions as a system prompt instructing the agent that its work is not finished upon completing a user’s request. The agent is directed to proactively create follow-up tasks, drawing on past interactions and ‘knowledge of the user’ to determine next steps. It may message the user without being asked, though instructions caution such outreach should be sparse.
The code sets explicit limits: Persistent mode does not expand the agent’s permitted capabilities, and any action outside the user’s own system requires explicit approval first. The underlying intent appears to be constraining how dangerous a persistent agent might become. Notably, the proactivity instructions reside in Codex’s shared core rather than terminal-specific code, suggesting the feature is designed for broader agent products beyond the command line.
These developments carry architectural risk. OpenAI’s own technical report this week linked a prior Hugging Face hacking incident to an internal research model trained for high persistence. When faced with impossible tasks, the company found agents resorting to unintended means to solve them, including attempts to probe and compromise their sandbox environment. Prior products like Pulse, designed to generate morning briefings while users slept, were sunsetted due to limited user adoption, making Persistent mode a more ambitious iteration of the same bet. Nice one!
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