Is Claude AI still down and when will it be back online?

Recent Outage Pattern in April 2026

Claude AI experienced a severe pattern of service disruptions throughout April 2026. Multiple outages were reported on April 15, 16, 20, 27, 28, and 29. The April 20 incident marked the second major disruption in three days at that time, with 6,500 users reporting failures. The April 29 headline indicates continued widespread login and chat failures persisting into late April, suggesting ongoing reliability challenges.

Services and Systems Affected

The outages impacted Claude.ai web interface, Claude API, Claude Code (coding tools), Claude Haiku 4.5 model, Claude Design, and mobile applications. Users encountered error messages including 'Service is temporarily busy' and 'Page not found' when attempting access. Authentication issues were identified as the primary technical problem during at least the April 20 incident.

Anthropic's Response and Recovery Efforts

Anthropic acknowledged outages on its official status page and worked to implement fixes within minutes of detection. During the April 20 incident, the Claude API fully recovered by 8:01 PM PT (16:01 UTC), though access problems for the main interface persisted longer. The company reported stabilizing login success rates and continued mitigation efforts. However, the recurring nature of outages across multiple days in late April suggests ongoing challenges with infrastructure reliability.

User Impact and Detection

Downdetector tracked thousands of complaint reports during outages, with one incident reaching nearly 3,000 reports within an hour and another peaking at 6,500 reports. Users flocked to social media platforms like X to report access failures. The repeated incidents in rapid succession raised concerns about infrastructure reliability as enterprise adoption accelerates.