# Anthropic: Degraded performance for Claude Opus 5 and Claude Haiku 4.5

- Provider: [Anthropic](https://outages.cc/anthropic.md)
- Type: Incident
- State: Resolved
- Worst impact: Degraded performance
- Started: 2026-08-19 09:42 UTC
- Resolved: 2026-08-19 11:02 UTC (lasted 1 h 20 min)
- Components: claude.ai, Claude API (api.anthropic.com), Claude Code, Claude Cowork
- Official update: https://stspg.io/zg9tfmjj1th2

## Updates from Anthropic

### resolved, 2026-08-19 11:02 UTC

This incident has been resolved.

### monitoring, 2026-08-19 10:33 UTC

A fix has been implemented and we are monitoring the results.

### identified, 2026-08-19 09:42 UTC

We have identified the cause of elevated errors on requests to Claude Opus 5 and Claude Haiku 4.5 and are working on a fix. We will provide an update as soon as possible.