Model Releases
Four major AI models suffer rare overlapping downtime
In late‑morning UTC 2026 a rare, overlapping outage hit the four largest cloud AI models—OpenAI’s ChatGPT and Codex, Anthropic’s Claude (Mythos 5.1, Fable 5.1, Opus 5, Sonnet 5), xAI’s Grok, and Googl
In late‑morning UTC 2026 a rare, overlapping outage hit the four largest cloud AI models—OpenAI’s ChatGPT and Codex, Anthropic’s Claude (Mythos 5.1, Fable 5.1, Opus 5, Sonnet 5), xAI’s Grok, and Google’s Gemini. Elevated error rates were reported from 9 AM to noon Eastern Time; each platform published a partial‑outage or degraded‑performance notice, applied fixes within a few hours, and resolved the issue by around 12:55 PM (except Grok, which still shows an error message). DownDetector metrics spiked for all models during the window, with Gemini’s problems unacknowledged publicly.
Related
Source: Ars Technica | 2026-09-03