OpenAI acknowledged that its Codex tool was experiencing "elevated errors" after users complained about issues with the AI coding tool. "Oy," OpenAI's Codex lead Thibault Sottiaux wrote on X, "We are aware that some Codex users are experiencing high error rates with 'model at capacity' and are working to bring things back to being stable." The initial error on OpenAI's dashboard was first listed at 6:32 a.m. Eastern Time. As of 9:48 a.m. Eastern Time on Tuesday, OpenAI's status indicator had changed to green with the message "All impacted services have now fully recovered." Across social media, Codex users shared screenshots of their Codex dashboards not working, showing that GPT 5.5, its current frontier coding model, was "at capacity."