Claude Code outage history
HostTracker's checkpoints recorded no outage of 5 minutes or longer on api.anthropic.com in the last 90 days. This page lists every one we measure, as soon as one happens. Claude also posted 22 incidents on its own status page that our checks did not record as an outage; they are listed too, marked Official.
Recorded outages
Last 90 days · 5 min and longer · UTC
- Official onlyElevated errors affecting the Google Calendar connector 3 hours 46 minutes
- Official onlyElevated errors affecting the Gmail connector 1 hour 49 minutes
- Official onlyElevated errors for Claude Sonnet 5.5 41 minutes
- Official onlyElevated errors for Claude Sonnet 5.5 42 minutes
- Official onlyElevated errors for Claude Fable 5.1 32 minutes
- Official onlyElevated errors for Claude Sonnet 5.5 and other models 1 hour 39 minutes
- Official onlyElevated errors for Claude Fable 5 and Claude Fable 5.1 37 minutes
- Official onlyElevated errors for Claude Opus 5.5 6 minutes
- Official onlyElevated errors for Claude Fable 5.1, Sonnet 5.5, and Haiku 5.5 34 minutes
- Official onlyDegraded performance for Claude Fable 5 40 minutes
- Official onlyElevated errors for Claude Opus 5.5 19 minutes
- Official onlyElevated errors for Claude Mythos 5.1 and Claude Fable 5.1 16 minutes
- Official onlyElevated errors on claude.ai, Claude Code, Claude Cowork and the Claude API 2 hours 6 minutes
- Official onlyElevated errors for multiple models 1 hour 38 minutes
- Official onlyIntermittent error spikes for Claude Mythos 5.1 and Claude Fable 5.1 1 hour 26 minutes
- Official onlyElevated errors for Claude Mythos 5.1 and Claude Fable 5.1 17 minutes
- Official onlyElevated errors for multiple models 2 hours 57 minutes
- Official onlyElevated errors for Claude Sonnet 5 19 minutes
- Official onlyElevated errors for Claude Sonnet 5 27 minutes
- Official onlyDegraded performance on claude.ai and Claude Code 1 hour 14 minutes
- Official onlyElevated errors on Claude Code and Claude Cowork 2 hours 59 minutes
- Official onlyIssues logging into Claude.ai 15 minutes
Rows tagged "Official" carry the incident Claude posted on its own status page, quoted and linked on the incident's page; an "Official only" row is one our checkpoints did not record as an outage. Every other outage was measured by HostTracker's own checkpoints and confirmed from several locations before it was recorded. Open any row for its timeline, or see the live Claude Code status and the 90-day uptime chart.
Independent measurement by HostTracker. Not affiliated with Claude Code.
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