Overview
- User reports on outage tracker Downdetector spiked sharply on Thursday, September 3, 2026, showing tens of thousands of complaints for ChatGPT and thousands more for Claude, Gemini and Grok.
- OpenAI posted a ChatGPT Work Mode incident, said it applied a mitigation and later marked the issue resolved, while Anthropic reported it had identified the cause of elevated Claude errors and was working on a fix.
- Users described high latency, frozen prompts, failed or incomplete responses, and an inability for some accounts to start or continue tasks, with paying Work Mode users especially affected.
- Not all vendors have given a full technical explanation and investigators say simultaneous outages can stem from shared third‑party dependencies, routing problems, or coincidental independent failures.
- The outages highlight how deeply students, developers and businesses rely on generative chatbots and signal that public post‑mortems and status updates will be needed to prevent repeat disruptions.