Multiple AI Models Hit by Outages, OpenAI Says It's Investigating

Users reported that several AI models, including ChatGPT, Claude, Grok, and Cursor, went down on the evening of September 3 US time, with Codex showing a '404 Not Found' error. Downdetector showed significant impact in the US, with over 12,000 reports for OpenAI, about 1,200 for Claude, and 1,000 for Grok.

OpenAI said it's investigating issues with ChatGPT and Codex. Anthropic said it's looking into Claude's errors and working on fixes. SpaceXAI also confirmed Grok is down and handling the outage. Recovery times are unclear, and users should check official channels for updates.