Users worldwide reported simultaneous access failures affecting popular artificial intelligence services including OpenAI, Claude, Grok, Google Gemini, and Cursor. ^[1] Major AI platforms ChatGPT, Claude, Grok, and Gemini experienced service failures on Thursday that prevented thousands of users from accessing their services normally. ^[2][3] Frontier models from Anthropic, OpenAI, and xAI all experienced rare outages on Thursday morning, creating downtime for their corresponding AI chatbots. ^[4] OpenAI introduced GPT-6 Astra, an AI model the company says can operate on a computer and automatically complete complex, multi-step business tasks that previously required direct human intervention. ^[5] Analysts suspect the disruptions are related to hyperscalers such as AWS and Microsoft Azure, which host the data centers and cloud infrastructure for these services. ^[6] The simultaneous nature of the outages suggests the root cause is located in common internet infrastructure rather than the individual AI models themselves. ^[7] Downdetector recorded over 37,000 outage reports in the United States, more than 3,000 in Spain, and over 1,000 in Mexico. ^[8] Microsoft Azure, which provides cloud services for the affected models, also experienced interruptions during the incident. ^[9] OpenAI reported that ChatGPT and Codex experienced high error rates which were corrected by 12:00 PM Colombia time. ^[10] Anthropic reported errors in Claude Mythos 5.1, Claude Fable 5.1, and Claude Opus 5 models, stating that affected models had been reduced and services were returning to normal operation. ^[11] Grok, developed by xAI, reported experiencing problems on its status page, with the company stating it was working to restore the service as soon as possible. ^[12]