Overview
- OpenAI's ChatGPT, which went down Monday, triggered global spikes on Downdetector and left users unable to start chats or call the API.
- OpenAI's status page said users could not load ChatGPT or Codex and noted an ongoing investigation without a published cause.
- People reported 503 errors, very slow responses, dropped API connections, login issues, and missing chat histories across multiple regions.
- Traffic shifted to Google Gemini, Anthropic's Claude, and Microsoft Copilot, and some of those platforms acknowledged heavier load and brief glitches.
- By midday some users saw access return in stages, but companies that plug OpenAI's models into customer service and coding tools faced stalled work and are weighing backup plans.