Elevated errors across many models

Update timeline

1. investigating Jul 30, 2026, 05:57 AM UTC

   We are currently investigating this issue.

2. identified Jul 30, 2026, 06:26 AM UTC

   All models except Opus 5 have recovered. We're working to recover Opus 5 as well.

3. identified Jul 30, 2026, 07:33 AM UTC

   As of 7:32 UTC / 0:32 PT, Opus 5 errors are back to baseline but we're seeing again Sonnet 5's errors up.

4. identified Jul 30, 2026, 08:06 AM UTC

   As of 8:05 UTC / 1:05 PT, Sonnet 5 errors are back to baseline, but we're seeing an increased error rate on Fable 5.

5. identified Jul 30, 2026, 08:33 AM UTC

   As of 01:33 PT / 08:33 UTC we are back to errors across all models.

6. monitoring Jul 30, 2026, 10:03 AM UTC

   As of 2:58 PT / 9:58 UTC the errors are back to baseline.

7. monitoring Jul 30, 2026, 10:23 AM UTC

   We are also investigating issues with Opus 4.7 and Opus 4.5.

8. resolved Jul 30, 2026, 10:48 AM UTC

   This incident has been resolved.