Resolved after 3 hours 8 minutes, affecting claude.ai and Claude API (api.anthropic.com) and 1 more, on June 5, 2026.
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.
Affected components
Update timeline
- investigating Jun 05, 2026, 03:19 PM UTC
We are currently investigating this issue.
- identified Jun 05, 2026, 03:43 PM 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.
- identified Jun 05, 2026, 04:46 PM 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.
- monitoring Jun 05, 2026, 05:13 PM UTC
Success rates across all models have returned to expected levels. We are continuing to monitor closely to ensure no further issues will recur.
- monitoring Jun 05, 2026, 06:27 PM 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.
- resolved Jun 05, 2026, 06:28 PM UTC
This incident has been resolved.
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