Anthropic: Elevated errors for Claude Fable 5

Impact: majorStatus: resolvedStarted 2026-08-14 23:57 UTCResolved 2026-08-15 00:27 UTC (30 min)4 updatesSource: stspg.io

Summary

Claude Fable 5 requests on claude.ai experienced elevated errors, rated major. The incident started at 2026-08-14 23:57 UTC and resolved at 2026-08-15 00:27 UTC (30 min). Anthropic separately reported impact from 20:00 Aug 14, 2026 to 00:11 Aug 15 , 2026 UTC; no specific cause or fix was disclosed.

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

Affected components: claude.ai

Timeline of updates

identified2026-08-14 23:57 UTC
We have identified the cause of elevated errors on requests to Claude Fable 5 and are working on a fix. We will provide an update as soon as possible.
identified2026-08-15 00:20 UTC
We have identified the cause of the issue affecting claude.ai and are working on a fix. We will provide an update as soon as possible.
identified2026-08-15 00:21 UTC
We have identified the cause of the issue affecting Claude services and are working on a fix. We will provide an update as soon as possible.
resolved2026-08-15 00:27 UTC
The issue affecting Claude services has been resolved. Impact occurred from 20:00 Aug 14, 2026 to 00:11 Aug 15 , 2026 UTC.

Rewindex changes for this incident

Major incident: Elevated errors for Claude Fable 5 2026-08-14 23:57 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