Anthropic: Elevated errors across many models

Impact: majorStatus: resolvedStarted 2026-07-30 05:57 UTCResolved 2026-07-30 10:48 UTC (4.8 h)8 updatesSource: stspg.io

Summary

Anthropic reported a major incident with elevated errors across many models affecting claude.ai, Claude API (api.anthropic.com), Claude Code and Claude Cowork. It started at 2026-07-30 05:57 UTC and was resolved at 2026-07-30 10:48 UTC, lasting 4 h 51 min; models partially recovered before errors returned across all models.

Machine-written from the archived incident (Sol). Check the timeline before relying on it.

Affected components: Claude CoworkClaude API (api.anthropic.com)claude.aiClaude Code

Timeline of updates

investigating2026-07-30 05:57 UTC
We are currently investigating this issue.
identified2026-07-30 06:26 UTC
All models except Opus 5 have recovered. We're working to recover Opus 5 as well.
identified2026-07-30 07:33 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.
identified2026-07-30 08:06 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.
identified2026-07-30 08:33 UTC
As of 01:33 PT / 08:33 UTC we are back to errors across all models.
monitoring2026-07-30 10:03 UTC
As of 2:58 PT / 9:58 UTC the errors are back to baseline.
monitoring2026-07-30 10:23 UTC
We are also investigating issues with Opus 4.7 and Opus 4.5.
resolved2026-07-30 10:48 UTC
This incident has been resolved.

Rewindex changes for this incident

Major incident: Elevated errors across many models 2026-07-30 05:57 UTC

Impact, status and times are the vendor’s own, as last archived. View on stspg.io (opens in new tab). Anthropic profile · Recent Anthropic incidents · Markdown · JSON