Outage in Claude

Elevated errors across many models

Resolved Minor

June 16, 2026 - Started about 9 hours ago - Lasted about 2 hours
Official incident page

Incident Report

Summary AI Generated

Claude experienced elevated error rates across multiple models on June 16, 2026, affecting both claude.ai and api.anthropic.com for approximately 2 hours. The incident occurred in two phases: all Sonnet and Opus models hit ~10% error rates from 10:23–11:00 PT, followed by Opus 4.8 sustaining ~10% error rates until 12:20 PT — with users confirming API errors on Opus 4.8 via the Mac App. The incident was fully resolved by 12:20 PT following implementation of a fix.

We are currently investigating this issue.

Components affected

Claude claude.ai Claude api.anthropic.com

Latest Updates ( sorted recent to last )

RESOLVED about 7 hours ago - at 06/16/2026 07:32PM

The incident has now been resolved. We had two phases:
* between 10:23 PT / 17:23 UTC to 11:00 PT / 18:00 UTC -- all Sonnet and Opus models were affected, reaching an error rate of around 10%
* after 11:00 PT / 18:00 UTC and until 12:20 PT / 19:20 UTC -- Opus 4.8 had an average error rate of 10%

The incident is now resolved.

MONITORING about 7 hours ago - at 06/16/2026 07:22PM

A fix has been implemented and we are monitoring the results.

IDENTIFIED about 7 hours ago - at 06/16/2026 07:08PM

We are continuing to work on a fix for this issue.

IDENTIFIED about 7 hours ago - at 06/16/2026 07:00PM

We are continuing to work to resolve an elevated rate of errors on requests to Claude Opus 4.8, and will provide an additional update as soon as possible.

IDENTIFIED about 8 hours ago - at 06/16/2026 06:15PM

We are still seeing errors on Opus 4.8 and Haiku 4.5.

MONITORING about 8 hours ago - at 06/16/2026 06:00PM

A fix has been implemented and we are monitoring the results.

INVESTIGATING about 9 hours ago - at 06/16/2026 05:29PM

We are currently investigating this issue.

Latest Claude outages

Elevated errors on Claude Sonnet 4.6 and Opus 4.8 - about 2 hours ago

Elevated errors for Claude Opus 4.8 - about 6 hours ago

Opus 4.8 errors - about 6 hours ago

Elevated errors on Claude Opus 4.8 - 2 days ago

Elevated errors on Claude Opus 4.8 - 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