Changes / Anthropic / Elevated errors for Claude Fable 5

Anthropic: Major incident: Elevated errors for Claude Fable 5

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 diff below (Sol; type: incident outage). Check the diff before relying on it.

Major incidentLabel: outage (model (Jev), 97%)Changed Detected Source: stspg.io

What changed

AddedTitle#1
Before: not present
After: Elevated errors for Claude Fable 5
AddedImpact#2
Before: not present
After: major
AddedStatus#3
Before: not present
After: resolved
AddedStart time#4
Before: not present
After: 2026-08-14 23:57 UTC
AddedResolved time#5
Before: not present
After: 2026-08-15 00:27 UTC
AddedAffected components#6
Before: not present
After: claude.ai
AddedUpdateidentified#7
Before: not present
After: 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.
AddedUpdateidentified#8
Before: not present
After: 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.
AddedUpdateidentified#9
Before: not present
After: 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.
AddedUpdateresolved#10
Before: not present
After: The issue affecting Claude services has been resolved. Impact occurred from 20:00 Aug 14, 2026 to 00:11 Aug 15 , 2026 UTC.

First version of this incident archived by Rewindex. View the live incident.

History of this incident

When (UTC)ChangeKind
Major incident: Elevated errors for Claude Fable 5 (this change)
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.
Major incident

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