Claude: Elevated errors for Claude Fable 5.1
Claude reported a major incident involving elevated errors for Claude Fable 5.1 across claude.ai, Claude API - api.anthropic.com, Claude Code, and Claude Cowork, starting 2026-10-25 08:17 UTC. The vendor said it identified the cause and was working on a fix; the incident remained open when archived, with 0 min elapsed at the last update.
Machine-written from the archived incident (Sol). Check the timeline before relying on it.
Affected components: claude.aiClaude API - api.anthropic.comClaude CodeClaude Cowork
Timeline of updates
- investigating
We are investigating elevated errors on requests to Claude Fable 5.1. We will provide an update as soon as possible.
- identified
We have identified the cause of elevated errors on requests to Claude Fable 5.1 and are working on a fix. We will provide an update as soon as possible.
- monitoring
A fix has been deployed for the issue affecting Claude services and we are monitoring for recovery.
- resolved
The issue affecting Claude services has been resolved. Impact occurred from 01:08 PT / 08:08 UTC to 01:29 PT / 08:29 UTC.
Changes Rewindex caught on this incident
- Major incident: Elevated errors for Claude Fable 5.1
- Incident updated: Elevated errors for Claude Fable 5.1
- Incident updated: Elevated errors for Claude Fable 5.1
Archive proof
Rewindex commits each version of an incident it captures to a daily checkpoint, chains it to the day before, and has the checkpoint timestamped by FreeTSA and DigiCert. That proves these records existed by then and have not been changed since, by anyone, Rewindex included.
How the archive is checked, and what it cannot prove.
First version captured
In the 2026-10-25 checkpoint, timestamped by FreeTSA and DigiCert on . Record hash
99b6456e000eb7cb…Version 2 captured
In the 2026-10-25 checkpoint, timestamped by FreeTSA and DigiCert on . Record hash
ad8b2637ee6bf725…Version 3 captured
In the 2026-10-25 checkpoint, timestamped by FreeTSA and DigiCert on . Record hash
b5cdc21d9cd60414…
Impact, status and times are the vendor’s own, as last archived. View on status.claude.com (opens in new tab).
Cite this
Status incident (vendor impact label: major) posted by Claude, started 2026-10-25 08:17 UTC, resolved after 32 min, 4 update(s); edited after publishing.
- Title
- Elevated errors for Claude Fable 5.1
- Vendor
- Claude
- Date
- URL
- https://rewindex.com/company/claude/incidents/vx06kp8wfpq2
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