Anthropic confirms Claude is down, multiple models affected
Description
Anthropic's Claude AI models, including Mythos, Fable, and Opus versions, are experiencing a service outage causing elevated errors and failed requests. The incident began on September 3, 2026, and affects multiple versions of these models. Anthropic has identified the cause and is actively working on a fix. The outage impacts user access to these AI models but does not indicate a security breach or exploit. No patch or remediation details are provided, and the outage status remains ongoing at the time of reporting.
Affected software
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
On September 3, 2026, Anthropic confirmed an outage affecting multiple Claude AI models, specifically Mythos/Fable 5.1, Mythos/Fable 5, Opus 5, Opus 4.8, and Opus 4.6. Users encounter elevated errors and failed requests when interacting with these models. Anthropic identified the cause shortly after the outage began and is working on a resolution. The issue is a service disruption rather than a security vulnerability or exploit. No evidence of active exploitation or credential compromise is reported.
Potential Impact
Users of the affected Claude AI models experience service unavailability or errors, preventing successful request processing. There is no indication of data compromise, unauthorized access, or exploitation. The impact is limited to service disruption and degraded user experience.
Defensive Guidance
Anthropic is actively investigating and working on a fix for the outage. Users should monitor Anthropic's official status page for updates. No specific user action or patch is currently available or required. The vendor manages remediation internally.
Technical Details
- Classification
- {"confidence":0.3,"severitySource":"heuristic","classifier":"rss-v2"}
Threat ID: 6a998d26acd9273b4916df3a
Added to database: 09/03/2026, 15:07:18 UTC
Last enriched: 09/07/2026, 20:42:23 UTC
Last updated: 10/04/2026, 07:30:24 UTC
Views: 69
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