What time did the outages start?

ChatGPT started returning errors around 11AM ET, and Anthropic's outage began around 10:30AM ET.

Which Claude models are still affected?

Anthropic says the outage is now only affecting Opus 4.8 and Opus 5, after initially impacting several other models.

Is there an estimated time for when services will be restored?

Anthropic's CJ Avilla said they don't have an ETA yet, and Grok's website says they are working on restoring service as quickly as possible.

Large Language ModelsAI Business & IndustryThe Verge AISep 3, 2026Sep 4, 2026, 01:00 JST

ChatGPT, Grok, and Claude all hit by outages at once

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3 Key Points

What happened
OpenAI's ChatGPT, xAI's Grok, and Anthropic's Claude all experienced issues on the same morning. ChatGPT started returning errors around 11AM ET, affecting logins, file uploads, voice mode, search, deep research, and image generation. Anthropic's Claude chatbot and API were also impacted, with Opus 4.8 and Opus 5 still affected.
Why it matters
The simultaneous outages highlight the dependency many users have on these AI tools for daily tasks. OpenAI said it applied a mitigation but is still seeing degraded performance. Anthropic technical staff member CJ Avilla said an infrastructure issue caused a partial outage and that they don't have an ETA yet. Grok's app on Android, iOS, and the web is also down.
What to watch
The test is whether OpenAI’s “applied a mitigation” holds, as the cause of the simultaneous failures remains unclear and the companies haven’t said if the outages are related. Watch for any update on Anthropic’s ETA, which CJ Avilla said is still unknown as of the report.

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Context & Analysis

The simultaneous outage of ChatGPT, Grok, and Claude is notable because these are among the most widely used AI chatbots. The fact that they all went down around the same time suggests a possible shared cause, such as a common infrastructure provider or a broader internet issue, though the article does not confirm any link. OpenAI's mention of "elevated errors across ChatGPT and Codex" and its mitigation effort suggests a technical problem on its side. Anthropic's reference to an "infrastructure issue" points to a similar internal cause. Grok's error message about being overloaded hints at capacity constraints. The outages come as OpenAI is teasing Astra, a new AI model, which may put additional pressure on its systems. The lack of immediate answers from the companies leaves users uncertain about when these services will be fully restored.

FAQ

What time did the outages start?: ChatGPT started returning errors around 11AM ET, and Anthropic's outage began around 10:30AM ET.
Which Claude models are still affected?: Anthropic says the outage is now only affecting Opus 4.8 and Opus 5, after initially impacting several other models.
Is there an estimated time for when services will be restored?: Anthropic's CJ Avilla said they don't have an ETA yet, and Grok's website says they are working on restoring service as quickly as possible.

The Verge AIRead Original Article

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