Outage in Anthropic

Elevated errors on Claude Sonnet 4.6

Resolved Minor

March 16, 2026 - Started about 1 month ago - Lasted about 3 hours
Official incident page

Incident Report

Summary AI Generated

Anthropic experienced elevated error rates on Claude Sonnet 4.6 that specifically impacted free tier users across claude.ai, console.anthropic.com, and api.anthropic.com. The issue was identified and a fix was implemented over the course of 2.6 hours. The incident has been resolved.

There's an elevated error rate for free tier users on Claude Sonnet 4.6. We are investigating

Components affected

Anthropic console.anthropic.com Anthropic api.anthropic.com Anthropic claude.ai

Trusted by 1,000+ teams

The Status Page Aggregator with Early Outage Detection

Stop finding out about outages from your users. Monitor 6,320+ cloud services and get alerted the second something breaks.

Start Free Trial

No credit card
14-day trial
2-minute setup

Latest Updates ( sorted recent to last )

RESOLVED about 1 month ago - at 03/16/2026 04:35PM

This incident has been resolved.

IDENTIFIED about 1 month ago - at 03/16/2026 03:35PM

We are continuing to work on a fix for this issue. This is currently only impacting free Claude.ai users.

IDENTIFIED about 1 month ago - at 03/16/2026 03:13PM

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

IDENTIFIED about 1 month ago - at 03/16/2026 02:05PM

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

IDENTIFIED about 1 month ago - at 03/16/2026 02:04PM

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

IDENTIFIED about 1 month ago - at 03/16/2026 02:02PM

The issue has been identified and a fix is being implemented.

INVESTIGATING about 1 month ago - at 03/16/2026 02:02PM

There's an elevated error rate for free tier users on Claude Sonnet 4.6. We are investigating

Latest Anthropic outages

Errors uploading documents to Google Drive in Claude.ai - 1 day ago

Failures to add Credentials to Vaults - 2 days ago

Claude Cowork not starting for some users - 2 days ago

Opus 4.6 elevated rate of errors - 3 days ago

Elevated errors on Claude.ai, API, Claude Code - 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