# Anthropic: Degraded performance for Claude Opus 5, Claude Sonnet 5

- Provider: [Anthropic](https://outages.cc/anthropic.md)
- Type: Incident
- State: Resolved
- Worst impact: Degraded performance
- Started: 2026-08-17 13:56 UTC
- Resolved: 2026-08-17 15:29 UTC (lasted 1 h 33 min)
- Components: claude.ai, Claude API (api.anthropic.com), Claude Code, Claude Cowork
- Official update: https://stspg.io/dw9p8s0wg6hh

## Updates from Anthropic

### resolved, 2026-08-17 15:29 UTC

This incident has been resolved.

### monitoring, 2026-08-17 14:39 UTC

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

### investigating, 2026-08-17 14:25 UTC

Claude Opus 5 is operational. Claude Sonnet 5 is degraded. We are investigating.

### investigating, 2026-08-17 13:56 UTC

We are investigating elevated errors on requests to Claude Opus 5. We will provide an update as soon as possible.