ChatGPT, Claude, Gemini and Grok All Suffer Major Outages on the Same Day

RSync25 · x · 2026-09-04

ChatGPT, Claude, Gemini and Grok all experienced widespread disruptions on Thursday, with users reporting frozen chats, slow responses and unusual download prompts. OpenAI investigated elevated error rates across ChatGPT and Codex; Anthropic reported continuing issues with Opus 4.8 and Opus 5; xAI confirmed Grok disruptions (per Bloomberg). No common cause has been confirmed.

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