Anthropic confirms Claude is down, multiple models affected

What happened

Anthropic has confirmed that its generative artificial intelligence platform, Claude, is experiencing a significant service outage. According to reports, users attempting to access the platform are encountering elevated error rates and are unable to successfully send requests to multiple Anthropic artificial intelligence models. The issues appear to affect both the web interface and the application programming interface, limiting access for developers and retail users alike who rely on the system for daily operations.

How it works

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Why it matters

Anthropic confirms Claude is down, multiple models affected By Mayank Parmar September 3, 2026 11:02 AM 0 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.

Who is affected

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.

What to watch next

Claude error when using affected models A few minutes later, Anthropic published a more complete list of affected models, confirming that the outage impacts Mythos/Fable 5.1, Mythos/Fable 5, Opus 5, Opus 4.8, and Opus 4.6. See the full write-up from BleepingComputer via the source link for quotes and complete context.