Anthropic’s Claude AI models suffered a significant outage today, disrupting services like Claude Code and affecting developers worldwide. Users reported encountering 500 errors when attempting to access the code-generation tool, while Anthropic confirmed that elevated error rates were being observed across all its Claude models through the API. The issue, which began in the early afternoon, forced many developers to pause their work, with some taking extended breaks as they waited for the service to restore. Anthropic quickly identified the root cause and deployed a fix within approximately 20 minutes, bringing the system back online. This is a rare disruption for Claude Code, a tool widely used by developers—including teams at Microsoft—for coding assistance and AI-powered development workflows. The outage comes on the heels of earlier issues: yesterday, Claude Opus 4.5 experienced technical errors, and earlier this week, Anthropic had to resolve problems with its AI credit purchasing system. The recent string of incidents highlights the growing reliance on AI infrastructure and the challenges of maintaining stability at scale. Despite the brief downtime, Anthropic confirmed that the issue has now been fully resolved, and services are operating normally.