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● Covered by 1 source · 1 reportMedium impact1 neutral

Claude experiences elevated errors across multiple models, including Opus 5

🔄 Updated 2d ago
Aggregated by BrevFeed ai · updated 2d ago
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Key points

  • Elevated errors affected Claude Mythos 5.1, Fable 5.1, and Opus 5 models.
  • The incident impacted claude.ai, Claude API, Claude Code, and Claude Cowork.
  • The issue occurred from 5:50pm PT to 7:10pm PT.
  • All affected models returned to normal success rates.

Incident Overview

Claude, an AI service, reported elevated error rates across several of its models. The affected models included Claude Mythos 5.1, Claude Fable 5.1, and Claude Opus 5. This incident impacted users accessing claude.ai, the Claude API (api.anthropic.com), Claude Code, and Claude Cowork.

Timeline and Resolution

The elevated errors began at 5:50pm PT (00:50 UTC) and were fully resolved by 7:10pm PT (02:10 UTC), lasting approximately 1 hour and 20 minutes. The cause of the errors was identified, and a fix was implemented.

Initially, requests to Claude Fable 5 and 5.1 and Mythos 5 and 5.1 returned to normal success rates. Subsequently, errors affecting Claude Opus 5 were also resolved, with all affected models returning to normal operation.

Impact on Services

During the incident, users attempting to interact with the specified Claude models through various platforms experienced disruptions. The affected services are now operating with normal success rates, and the situation is being monitored to prevent recurrence.

✨ This summary was generated by AI from the outlets' reporting listed below. It is not independently verified and may contain errors — check the original sources. How BrevFeed works →

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Reporting from

Hacker News Front Page — Claude Status – Elevated errors for multiple models 💬 Discuss on HN 2d ago →

Claude experienced elevated error rates for its Mythos 5.1, Fable 5.1, and Opus 5 models, affecting claude.ai and the Claude API. The issue was identified and resolved, with services returning to normal success rates after approximately 1 hour and 20 minutes.