Technology
Major AI platforms experience overlapping service disruptions
OpenAI, Anthropic, Google, and xAI saw simultaneous disruptions and elevated error rates affecting multiple cloud-based models.
The short version
- Cloud AI services from OpenAI, Anthropic, xAI, and Google suffered concurrent service interruptions over several hours on Thursday morning.
- Users experienced elevated error rates and degraded performance across major tools, including ChatGPT, Codex, and multiple Claude models.
- The underlying cause of the simultaneous timing across different providers has not been detailed, though companies deployed mitigations and resolved the issues by early afternoon.
Key facts
- Cloud-based AI models run by OpenAI, Anthropic, xAI, and Google encountered overlapping service disruptions on Thursday morning.[Ars Technica]
- Anthropic reported a partial outage causing elevated request errors for Claude Mythos 5.1, Claude Fable 5.1, and Claude Opus 5 beginning at 9:23 a.m. Eastern, which was resolved by 12:16 p.m.[Ars Technica]
- Anthropic also logged a separate, brief surge in request errors for Claude Sonnet 5 shortly after noon Eastern.[Ars Technica]
- OpenAI reported degraded performance due to elevated error rates across ChatGPT and Codex starting at 10:43 a.m. Eastern, with normal operations restored by 12:55 p.m. following mitigation efforts.[Ars Technica]
What remains uncertain
- It remains unconfirmed whether a shared infrastructure failure or unrelated individual issues caused the overlapping outages across the four separate providers.[Ars Technica]
- Specific incident timelines and root causes for the reported disruptions at Google and xAI were not detailed.[Ars Technica]