ChatGPT, Claude, and Grok all went down at the same time

Key points

• ChatGPT began returning errors for users at around 11AM ET, with OpenAI confirming "elevated errors" across ChatGPT and its Codex coding tool.
• Anthropic's Claude chatbot started showing problems around 10:30AM ET, initially across five model versions before narrowing to two: Opus 4.8 and Opus 5.
• xAI's Grok chatbot went down across its app and website at roughly the same time.
• No cause has been confirmed, and it is not known whether the three outages are connected.

Three of the most widely used AI chatbots stopped working properly at almost exactly the same time on Tuesday morning, leaving millions of people unable to get responses from tools many now rely on for work.

ChatGPT, made by OpenAI, started throwing error messages at users at around 11AM ET. OpenAI's own status page confirmed "elevated errors across ChatGPT and Codex" (Codex is OpenAI's tool for writing and checking computer code). The company says it has applied a fix of some kind and is watching to see whether the service recovers.

What happened to Claude?

Anthropic's Claude, a rival chatbot to ChatGPT, began having problems around 10:30AM ET. Early reports on Anthropic's status page flagged five separate versions of the model, including Opus 4.6, Opus 4.8, and Opus 5. By the time of writing, the company said the trouble had narrowed to just two versions: Opus 4.8 and Opus 5. Anthropic says it is "continuing to work on a fix."

Grok, the chatbot built by Elon Musk's AI company xAI, was also down across its mobile app and website at roughly the same time. xAI said it is "working on restoring service as quickly as possible" but gave no further detail.

Are the three outages connected?

Nobody knows yet. The timing is striking: three separate companies, three separate products, all going dark within the same half-hour window. But striking timing is not the same as a shared cause. It could be coincidence. It could point to a shared piece of internet infrastructure that all three depend on. As of publication, no company has explained what went wrong, and The Verge AI, which first reported the story, said it had not received a response from any of the three firms.

For anyone who uses these tools for work, the practical message is simple: have a backup plan. If your workflow depends on a single AI chatbot, a simultaneous outage like this one is a reminder that these services can and do go offline without warning.

This story is still developing. We will update it when any of the three companies explains what happened.