Anthropic confirms Claude is down worldwide

July 29, 2026 · BleepingComputer · Severity: MEDIUM

Anthropic confirmed that its Claude AI assistant experienced a worldwide outage on July 29, 2026, with users receiving '529 Overloaded' errors across multiple Claude models. The disruption affected both the Claude chat interface and third-party tools relying on the Claude API. Anthropic began investigating at 7:49 p.m. UTC, identified the root cause by 8:33 p.m. UTC, and confirmed full recovery by 19:00 EDT. The company did not disclose the underlying cause of the outage but acknowledged it was server-side and related to elevated request volume and latency issues across Claude models.

Key Takeaways

Worldwide Claude outage hit all models — The disruption affected multiple Claude AI models simultaneously, causing 529 Overloaded errors across both consumer and API endpoints. Third-party API users were also affected — Tools and services that depend on the Claude API experienced the same disruptions as the direct chat interface.
Rapid investigation and resolution — Anthropic identified the issue within 44 minutes and fully resolved the outage within roughly 2 hours of initial detection. Cause undisclosed — Anthropic attributed the outage to elevated request volumes and latency but did not reveal the underlying technical root cause.