Downdetector reported Thursday morning that multiple major AI platforms Experienced service disruptions, including OpenAI, Claude, Grok and Cursor. Claude displayed an error message: "Due to unexpected capacity constraints, Claude is unable to respon

2026-09-03

Downdetector reported Thursday morning that multiple major AI platforms Experienced service disruptions, including OpenAI, Claude, Grok and Cursor. Claude displayed an error message: "Due to unexpected capacity constraints, Claude is unable to respond to your message. Please try again later." Grok displayed messages saying: "Grok is currently experiencing problems. We are working to restore service as soon as possible," and "This model is temporarily unavailable. Please try another model." Downdetector users first reported Grok and Claude interruptions at about 9:00 a.m. US Eastern Time; reports of OpenAI issues began around 10:30 a.m. US Eastern Time.