Incident

Updates

1. investigating Jun 5, 2026, 11:19 PM GMT+08:00

   We are currently investigating this issue.

2. identified Jun 5, 2026, 11:43 PM GMT+08:00

   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.

3. identified Jun 6, 2026, 12:46 AM GMT+08:00

   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.

4. monitoring Jun 6, 2026, 1:13 AM GMT+08:00

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

5. monitoring Jun 6, 2026, 2:27 AM GMT+08:00

   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.

6. resolved Jun 6, 2026, 2:28 AM GMT+08:00

   This incident has been resolved.