Claude.ai went offline on April 28, 2026 at around 5:41 PM UTC. Anthropic opened an official incident report and began posting updates at status.claude.com.
Claude users reported being unable to access the service during the outage window. Anthropic's status page is the fastest place to check for real-time updates on whether the incident has been resolved and which products are affected - it covers Claude.ai, the API, and Claude mobile apps separately.
Outages like this are a good reminder to keep a fallback option in your workflow if you rely on Claude for time-sensitive work. The status page at status.claude.com is worth bookmarking.