Willo - Elevated errors for multiple models – Incident details

Cloudflare → Cloudflare Sites and Services → Network experiencing degraded performance

Elevated errors for multiple models

Resolved
Partial outage
Started about 1 month agoLasted 1 hour 37 minutes

Affected

External Services

Partial outage from 12:57 AM to 2:11 AM, Operational from 2:11 AM to 2:35 AM

Anthropic Intelligence

Partial outage from 12:57 AM to 2:11 AM, Operational from 2:11 AM to 2:35 AM

Updates
  • Resolved
    UTC
    Resolved

    This issue has been resolved. Impact occurred from 5:50pm PT / 00:50 UTC to 7:10pm PT / 02:10 UTC.

  • Monitoring
    UTC
    Monitoring

    We have seen success rates return to normal across affected models, and are monitoring closely to ensure no further issues.

  • Update
    UTC
    Update

    We are continuing to work to resolve errors affecting some models. At this time, requests to Claude Fable 5 and 5.1 and Mythos 5 and 5.1 have returned to normal success rates. We are working to resolve remaining errors affecting Claude Opus 5, and will provide an additional update shortly.

  • Identified
    UTC
    Identified

    We have identified the cause of elevated errors on requests to Claude Mythos 5.1, Claude Fable 5.1, and Claude Opus 5 and are working on a fix. We will provide an update as soon as possible.

  • Investigating
    UTC
    Investigating

    We are investigating elevated errors on requests to Claude Mythos 5.1, Claude Fable 5.1, and Claude Opus 5. We will provide an update as soon as possible.