Anthropic Outage History

Anthropic experienced elevated errors affecting Claude Opus, impacting claude.ai, the API, and console services. The issue was resolved after 16 minutes with a fix implementation and monitoring period.

Anthropic experienced elevated error rates across multiple Claude models (primarily Opus 4.7, Sonnet 4.6, and Haiku 4.5) for 4.6 hours, affecting the console, API, and Claude.ai services. The incident was identified as impacting model success rates, with recovery occurring in stages as different models were restored to normal operation. The issue was fully resolved after monitoring confirmed stable performance across all affected models.

Anthropic's Claude.ai experienced elevated errors affecting user requests for 47 minutes. The service team applied a fix that restored normal success rates and monitored the platform to ensure stability. The incident was fully resolved with no further issues reported.

Anthropic experienced elevated errors affecting Claude Opus 4.7 across both claude.ai and api.anthropic.com for 1.4 hours. The company investigated the issue, implemented a fix, and monitored the results before confirming full resolution.

Anthropic experienced elevated errors on Claude Haiku 4.5 that affected claude.ai, console.anthropic.com, and api.anthropic.com for 37 minutes. The company implemented a fix and monitored the results before confirming the incident was resolved.

Anthropic experienced elevated errors affecting Claude Opus, impacting claude.ai, console.anthropic.com, and api.anthropic.com for 1.7 hours. The company implemented a fix and monitored the results before fully resolving the incident.

Anthropic experienced elevated errors affecting Claude Opus 4.7 across claude.ai, console.anthropic.com, and api.anthropic.com for 1.5 hours. The incident was classified as minor and has been resolved.

Anthropic experienced elevated errors affecting Claude Haiku 4.5 across claude.ai, console.anthropic.com, and api.anthropic.com for 1.6 hours. The company investigated the issue, implemented a fix, and monitored the results before confirming resolution.

From 04:34–04:42 UTC, Claude.ai experienced elevated errors and latency affecting application requests and user login functionality, including Claude Code authentication. The 9-minute incident impacted users' ability to access the service and authenticate properly. The issue was resolved and confirmed fixed by 04:51 UTC.

Anthropic experienced elevated errors affecting Claude Opus 4.7 requests across claude.ai, console.anthropic.com, and api.anthropic.com from 21:47 to 22:18 UTC on May 18, 2026. The service disruption lasted 13 minutes and has been fully resolved.