OpenAI's ChatGPT began experiencing issues, including the appearance of error messages, around 11:00 AM Eastern Time. According to OpenAI's status page, there has been an increase in errors for both ChatGPT and Codex. [The Verge]
This outage has affected a wide range of functions beyond conversational capabilities, including login, file uploads, voice mode, search, and image generation. OpenAI stated that while they have applied mitigation measures and are monitoring the recovery status, the AI tools remain in a degraded performance state.
Anthropic's Claude also experienced problems with its chatbot, Claude Code, and Claude API during the same period. The company's technical staff stated that some services are experiencing outages due to infrastructure issues. [The Verge]
According to the company's status page, multiple models were initially affected, but the impact is now reported to be limited to Opus 4.8 and Opus 5. No timeline for full recovery has been provided.
Additionally, xAI's Grok experienced outages across its Android, iOS, and web applications starting around 9:30 AM Eastern Time. When users enter prompts, a message is displayed indicating that the model is overloaded. xAI stated that it is working to restore the service as quickly as possible. [The Verge]
Source: ChatGPT, Grok, and Claude all went down at the same time (The Verge AI, 2026-09-04)