Overview
- Multiple leading platforms including OpenAI’s ChatGPT, Anthropic’s Claude, xAI’s Grok and Google’s Gemini experienced overlapping outages on Thursday, Sept. 3, 2026, with outage trackers logging tens of thousands of user reports for ChatGPT and thousands for other services.
- OpenAI said it detected elevated errors across ChatGPT and Codex that affected about 15 ChatGPT components such as Conversations, Login, ChatGPT Work, file uploads, GPTs and image generation and that engineers applied mitigations and were monitoring recovery.
- Anthropic reported elevated errors across several Claude models, said it had identified the cause and was working on a fix, while xAI acknowledged problems with Grok and Google recorded partial degradations for some Gemini users and API keys.
- No definitive shared root cause has been confirmed and some outlets suggested an unproven link to third‑party network infrastructure, but the companies involved have not validated that theory.
- The disruptions temporarily blocked core features for paying customers and developer APIs and underscore the risk businesses face when they depend heavily on a small group of AI providers and the technical effort needed to build true multi‑vendor redundancy.