Elevated errors on many Claude models

This incident has been resolved.

Posted Jun 05, 2026 - 18:28 UTC

The incident started at 8:08 PT / 15:08 UTC. Recovery times per model were:

Opus 4.6 - 8:25 PT / 15:25 UTC
Sonnet 4.6 — 9:23 PT / 16:23 UTC
Opus 4.8 — 9:59 PT / 16:59 UTC
Opus 4.7 — 10:12 PT / 17:12 UTC
Opus 4.5 — 10:29 PT / 17:29 UTC

All models have now fully recovered.

Posted Jun 05, 2026 - 18:27 UTC

Success rates across all models have returned to expected levels. We are continuing to monitor closely to ensure no further issues will recur.

Posted Jun 05, 2026 - 17:13 UTC

We are continuing to work to resolve issues affecting success rates on Opus 4.7 and 4.8, and will provide additional updates as soon as possible.

Posted Jun 05, 2026 - 16:46 UTC

We have identified the issue and we are working to mitigate the issue. Current ongoing issues with frontier models are with Opus 4.7 and Opus 4.8 and other models have recovered.

Posted Jun 05, 2026 - 15:43 UTC

We are currently investigating this issue.

Posted Jun 05, 2026 - 15:19 UTC