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Major Outages Hit OpenAI, Anthropic PBC and SpaceXAI on Thursday

Published Sep 3, 2026
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Summary:
  • OpenAI, Anthropic PBC and SpaceXAI all experienced service problems on Thursday that affected their customers.
  • Downdetector showed tens of thousands of users reported issues with OpenAI services while OpenAI probed elevated error rates impacting ChatGPT and Codex.
  • Anthropic said multiple models returned to service after errors but it is still working to resolve interruptions affecting Opus 4.8 and Opus 5, and SpaceXAI reported Grok was facing outages on its status page.

What happened

Three leading U.S. AI model makers had service interruptions on Thursday that disrupted customers. OpenAI, Anthropic PBC and SpaceXAI each posted or were reported to have problems that affected users of their services.

How the companies responded

OpenAI said it was probing elevated error rates that were impacting its ChatGPT chatbot and its Codex AI coding tool. Downdetector logged that tens of thousands of users reported issues with OpenAI services during the outage.

Anthropic reported that multiple of its models had returned to service after encountering errors, but it added that it is still working to resolve interruptions affecting Opus 4.8 and Opus 5. SpaceXAI's status page indicated that Grok, the chatbot associated with Elon Musk, was experiencing outages.

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What this means for your portfolio

The disruptions affected customers across three major model providers on the same day, showing that model access can be interrupted. If your portfolio has exposure to services or products that rely on these AI tools, consider how access issues like the Thursday outages could affect usage and operations.

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