Four major AI models suffer rare overlapping downtime
Service interruptions hit ChatGPT, Claude, Grok, and Gemini practically simultaneously.
On Thursday morning, four major AI models experienced a rare and simultaneous set of significant service disruptions. Anthropic first reported a partial outage at 9:23 am Eastern time, affecting Claude Mythos 5.1, Claude Fable 5.1, and Claude Opus 5. The company identified the cause of the error within 15 minutes and reported that a fix had been deployed by 12:16 pm, resolving the issue.
Meanwhile, OpenAI reported elevated errors across ChatGPT and Codex, leading to degraded performance at 10:43 am Eastern time. Mitigation efforts were put in place approximately 30 minutes later, and the issue was marked as resolved by 12:55 pm.
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- Four Major AI Models Suffer Rare Overlapping Downtime tech.slashdot.org
