OpenAI's AI assistants resumed operations on September 26 after a series of access errors that disrupted the platform. Users first reported that connectivity was lost around 23:06 UTC on September 25, and developers confirmed that the service was functional again by 00:07 UTC the following day.

The company is resetting usage limits for all paid subscribers across Codex and ChatGPT work to compensate for the disruption. To help manage the system during the failure, developers utilized a separate, spare Codex instance to maintain necessary operations while the primary service was down.