6 September 2026
ChatGPT, Claude, and Grok all went down Thursday morning
First reported
Computerworld ran this on , 3 days before the next source picked it up.
- OpenAI's ChatGPT experienced a roughly two-hour outage starting around 11 a.m. ET, affecting search, file uploads, agents, voice mode, and image generation. Service was restored by 12:55 p.m. ET.
- Anthropic's Claude went down around 7:37 a.m. ET for about four hours across multiple models including Sonnet 5 and Opus versions. This followed a separate 27-minute outage the day before.
How it was covered
Reported by Computerworld