Claude Code outage on October 25, 2026: Elevated errors for Claude Sonnet 5.5 and other models
Claude reported an incident affecting Claude Code for 1 hour 39 minutes on 25 October 2026, from 06:14 to 07:53 UTC.
Resolved
Official incident reported by Claude
- Started
- 06:14
- 25 Oct 2026 UTC
- Resolved
- 07:53
- 25 Oct 2026 UTC
- Duration
- 1h 39m
- 1 hour 39 minutes
- Impact
- Major
- as rated by Claude
- Updates
- 4
- posted by Claude
Timeline
All times UTC.
Official incident from Claude
Elevated errors for Claude Sonnet 5.5 and other models
-
Official
Investigating
We are investigating elevated errors on requests to Claude Mythos 5.1, Claude Fable 5.1, Claude Opus 5.5, Claude Sonnet 5.5, and Claude Haiku 5.5. We will provide an update as soon as possible.
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Official
Identified
We have identified the cause of elevated errors on requests to Claude Sonnet 5.5 and are working on a fix. We will provide an update as soon as possible.
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Official
Monitoring
A fix has been deployed for the issue affecting Claude services and we are monitoring for recovery.
-
Official
Resolved
The issue affecting Claude services has been resolved. Impact occurred from 23:05 PT on October 24 / 06:05 UTC on October 25 to 23:35 PT on October 24 / 06:35 UTC on October 25.
"Official" rows are quoted from Claude's public status page, status.claude.com. Very long posts are shortened.
What our checkpoints saw
HostTracker's checkpoints, which test api.anthropic.com from several locations, recorded no outage of 5 minutes or longer during this incident. A provider can report a problem that affects only some features, regions or accounts, which a check of the main address does not see. The live Claude Code status shows what our checks see right now.
Does your product depend on Claude Code?
An outage like this one reaches your users through your product, and most teams hear about it from a customer rather than from a dashboard. HostTracker watches any endpoint you name - your own site, an API you call, a vendor you resell - from 300+ locations, confirms a failure from several of them before it says anything, and then tells you by email, SMS, voice call or your chat tool.
You get the same record you are reading here for your own services: every outage timestamped, with the checks that observed it.
Independent measurement by HostTracker. Not affiliated with Claude Code. Official updates are quoted from Claude's public status page and remain Claude's own words.