Unable to enable extended thinking on first message

Incident Report for Claude

Resolved

This incident has been resolved.
Posted Nov 30, 2025 - 19:38 UTC

Monitoring

A fix has been implemented and we are monitoring the results.
Posted Nov 30, 2025 - 19:35 UTC

Identified

The issue has been identified and a fix is being implemented.
Posted Nov 30, 2025 - 19:15 UTC
This incident affected: claude.ai.