Claude outage on 25 October 2026
Major outageAn email when it goes down, and when it’s back.
“Elevated errors for Claude Sonnet 5.5 and other models”
On 25 October, Claude had a major outage with elevated errors on requests to several models, including Claude Sonnet 5.5. It affected claude.ai, the Claude API, Claude Code and Claude Cowork. The incident was open from 06:14 to 07:53 UTC, but the status page's final update said impact ran from 06:05 to 06:35 UTC, and component outages were listed from 06:14 to 06:35 UTC. Nequi, Musixmatch and Coinbase also reported problems around the same time, and this was Claude's third outage in four days.
Claude’s own incident page ↗- When
- 06:15–07:54 UTC
- How long
- 1 h 39 min
- Incident open on its page
- 06:14–07:53 UTC
- Components affected
- 4
- Claude, 30 days before
- 5 other outages
What broke when
From Claude’s own status page: when it moved each component into trouble, and back.
At the same time
Started in the hour before or during it
And 85 lesser-known services. Problems at the same time are a clue, never proof that one caused another.
Timeline
Times in UTC
- Investigating
- claude.ai: partial outage
- Claude API (api.anthropic.com): partial outage
- Claude Code: partial outage
- Claude Cowork: partial outage
- Cause identified
- Fix in place, monitoring
- claude.ai: back to normal
- Claude API (api.anthropic.com): back to normal
- Claude Code: back to normal
- Claude Cowork: back to normal
- Resolved
Where this comes from
Stackpulse reads Claude’s official status page at status.claude.com every minute. The times above are when it reported the problem; the summary is written from its updates and checked against them.
Stackpulse isn’t affiliated with Claude. Names and logos belong to their owners.