Unable to send messages to Opus 4.1

Incident Report for Claude

Resolved

This incident has been resolved.
Posted Sep 05, 2025 - 22:10 UTC

Update

We've re-enabled Opus 4.1 on Claude.ai
Posted Sep 05, 2025 - 21:40 UTC

Monitoring

A fix has been implemented and we are monitoring the results.
Posted Sep 05, 2025 - 21:33 UTC

Update

We've temporarily disabled Opus 4.1 on Claude.ai
Posted Sep 05, 2025 - 21:02 UTC

Identified

The issue has been identified and a fix is being implemented.
Posted Sep 05, 2025 - 21:01 UTC

Investigating

We are currently investigating this issue.
Posted Sep 05, 2025 - 20:31 UTC
This incident affected: claude.ai, platform.claude.com (formerly console.anthropic.com), Claude API (api.anthropic.com), and Claude Code.
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