Claude is experiencing an outage, with users encountering elevated errors when sending requests to multiple Anthropic AI models.
The incident began on September 3, 2026, at around 9:41 AM ET, and is affecting several Claude models, including the company's latest Mythos, Fable, and Opus models.
According to Anthropic’s status page, the company initially said it was investigating elevated errors on requests to Claude Mythos 5.1, Claude Fable 5.1, and Claude Opus 5.
At around 9:41 AM ET, Anthropic said it had identified the cause of the elevated errors and was working on a fix.
Claude error when using affected models
