Outage in Claude

Elevated errors on Claude Opus 5

Resolved Minor

July 27, 2026 - Started 3 days ago - Lasted about 1 hour
Official incident page

Incident Report

Summary AI Generated

**Claude Opus 5 Elevated Errors – July 27, 2026** Claude experienced elevated error rates on Claude Opus 5 affecting both claude.ai and the Anthropic API for approximately 48 minutes. The issue was identified and investigated, with errors returning to baseline levels by 9:03 UTC. The incident was classified as minor in severity.

We are currently investigating this issue.

Components affected

Claude claude.ai Claude api.anthropic.com

Latest Updates ( sorted recent to last )

RESOLVED 3 days ago - at 07/27/2026 09:05AM

As of 2:03 PST / 9:03 UTC the errors have returned to baseline.

INVESTIGATING 3 days ago - at 07/27/2026 08:16AM

We are currently investigating this issue.

Latest Claude outages

Elevated errors across all models - about 10 hours ago

Elevated errors on Claude Opus 5 and Haiku 4.5 - 3 days ago

Elevated errors on Claude Opus 5 - 3 days ago

Elevated errors for Opus 5 - 4 days ago

Elevated errors for Claude Fable 5, Claude Sonnet 5, Claude Haiku 4.5, and other models - 4 days ago

The Status Page Aggregator with Early Outage Detection

With IsDown, you can monitor all your critical services' official status pages from one centralized dashboard and receive instant alerts the moment an outage is detected. Say goodbye to constantly checking multiple sites for updates and stay ahead of outages with IsDown.

Start free trial

No credit card required · Cancel anytime · 6320 services available

Integrations with Slack Microsoft Teams Google Chat Datadog PagerDuty Zapier Discord Webhook