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Anthropic: Elevated errors for Claude Sonnet 5

claude.com
September 2026 2 Major incident

We are investigating elevated errors on requests to Claude Sonnet 5. We will provide an update as soon as possible.

Started

21:17 UTC

Duration

Lasted 27m

Source

IsDown

Next time

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Affected components: claude.ai, api.anthropic.com

What happened?

We are investigating elevated errors on requests to Claude Sonnet 5. We will provide an update as soon as possible.

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