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Claude Outage History

Every past Claude outage tracked by IsDown, with detection times, duration, and resolution details.

There were 242 Claude outages since October 2025. The 242 outages from the last 12 months are summarized below, with incident details, duration, and resolution information.

Major June 2, 2026

June 2026: Elevated errors on Opus 4.6

Detected Jun 2, 2026 2:08 AM EDT · Resolved Jun 2, 2026 7:53 AM EDT · Duration about 6 hours

Claude's Opus 4.6 model experienced elevated errors for 5.8 hours, affecting the main website, developer console, and API. The issue was identified and a fix was implemented, with the incident fully resolved after a monitoring period.

Minor June 1, 2026

June 2026: Degraded performance for Claude Sonnet 4.6

Detected Jun 1, 2026 2:31 PM EDT · Resolved Jun 1, 2026 3:07 PM EDT · Duration 36 minutes

Claude Sonnet 4.6 experienced elevated errors for 36 minutes, preventing the model from generating replies to user inputs. The issue affected the API, web interface, and console across all Anthropic services. The problem was resolved after investigation and remediation efforts.

Minor June 1, 2026

June 2026: Elevated errors on Claude Sonnet 4.6

Detected Jun 1, 2026 10:41 AM EDT · Resolved Jun 1, 2026 11:45 AM EDT · Duration about 1 hour

Claude Sonnet 4.6 experienced elevated errors for 1.1 hours, affecting claude.ai, console.anthropic.com, and api.anthropic.com. Users reported that Claude was not responding and requests were taking excessive time before failing. The issue was identified and resolved with a fix that was monitored before full resolution.

Minor June 1, 2026

June 2026: Elevated errors for Claude Opus 4.7

Detected Jun 1, 2026 8:16 AM EDT · Resolved Jun 1, 2026 9:36 AM EDT · Duration about 1 hour

Claude Opus 4.7 experienced elevated errors affecting both claude.ai and api.anthropic.com, causing the service to stop responding and preventing users from creating new windows. The issue was identified and resolved with a fix after 1.3 hours of downtime.

Minor June 1, 2026

June 2026: Sonnet 4.5 elevated errors

Detected Jun 1, 2026 5:10 AM EDT · Resolved Jun 1, 2026 5:30 AM EDT · Duration 20 minutes

Claude's Sonnet 4.5 model experienced elevated error rates affecting claude.ai, the developer console, and API endpoints for 20 minutes. The incident impacted users' ability to interact with the Sonnet 4.5 model across all Claude platforms. A fix was implemented and the issue was resolved after monitoring confirmed the errors had returned to normal levels.

Minor June 1, 2026

June 2026: Opus 4.7 elevated errors

Detected Jun 1, 2026 2:49 AM EDT · Resolved Jun 1, 2026 3:26 AM EDT · Duration 37 minutes

Claude's Opus model experienced elevated error rates for 37 minutes, affecting the main website, developer console, and API endpoints. The issue was investigated, a fix was implemented, and the incident was resolved after monitoring confirmed the solution was effective.

Minor May 30, 2026

May 2026: opus 4.7 elevated errors

Detected May 30, 2026 7:01 PM EDT · Resolved May 30, 2026 8:17 PM EDT · Duration about 1 hour

Claude's Opus 4.7 model experienced elevated error rates affecting both the Anthropic console and Claude.ai for 1.3 hours. The incident impacted users' ability to interact with the service normally through these platforms. The issue was investigated and fully resolved.

Major May 29, 2026

May 2026: Elevated errors for Claude Opus 4.8

Detected May 29, 2026 2:37 PM EDT · Resolved May 29, 2026 3:13 PM EDT · Duration 36 minutes

Claude Opus 4.8 experienced elevated errors from 18:16-18:42 UTC on May 29, 2026, affecting the Anthropic console, API, and Claude.ai website. A fix was deployed and the issue was resolved within 36 minutes, with success rates returning to normal.

Minor May 29, 2026

May 2026: Elevated errors on Claude Opus 4.8

Detected May 29, 2026 4:33 AM EDT · Resolved May 29, 2026 4:48 AM EDT · Duration 16 minutes

Claude Opus 4.8 experienced elevated errors affecting claude.ai, console.anthropic.com, and api.anthropic.com for 16 minutes. A fix was implemented and monitored before the incident was fully resolved. The issue was classified as minor and has been completely addressed.

Minor May 28, 2026

May 2026: Billing and subscription management issues

Detected May 28, 2026 3:06 PM EDT · Resolved May 28, 2026 3:26 PM EDT · Duration 20 minutes

Claude experienced billing and subscription management issues affecting claude.ai and the Anthropic Console, where users encountered errors when viewing subscription details, payment methods, or attempting to upgrade or change plans. Chat and API access remained unaffected during the incident. The issue was resolved after 38 minutes with a deployed fix and monitoring for recovery.