Claude Code 故障：Degraded performance for multiple models（claude.ai, Claude API (api.anthropic.com), Claude Code） — Aug 18, 2026

官方更新

1. resolved2026-08-18 19:01:45 UTC

   The issue affecting Claude Opus 5 has been resolved. Impact occurred from 16:11 to 18:23 UTC.

2. monitoring2026-08-18 18:26:31 UTC

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

3. investigating2026-08-18 17:12:22 UTC

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

4. investigating2026-08-18 16:20:49 UTC

   We are investigating elevated errors on requests to Claude Mythos 5, Claude Fable 5, Claude Opus 5, Claude Sonnet 5, Claude Haiku 4.5, and other Claude models. We will provide an update as soon as possible.

5. investigating2026-08-18 16:20:22 UTC

   We are investigating reports of degraded performance affecting multiple models. We will provide an update as soon as possible.