Thursday, September 3, 2026
ChatGPT, Claude and Gemini hit by simultaneous outages
OpenAI, Anthropic and Google all reported elevated error rates across their flagship AI products on September 3, 2026. OpenAI detected issues across ChatGPT and Codex at about 10:58 UTC affecting 15 and 4 components respectively, with mitigations applied within about 24 minutes, while Anthropic reported elevated errors on Claude Mythos 5.1, Claude Fable 5.1 and Claude Opus 5 across Claude AI, the API, Claude Code and Claude Cowork, with impact ending by 16:16 UTC. Users also reported errors and failed generations on Google's Gemini during the same window.
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