# Anthropic: Elevated errors for Claude Fable 5

- Impact (vendor’s label): major
- Status: resolved
- Started: 2026-08-14 23:57 UTC · Resolved: 2026-08-15 00:27 UTC · Duration: 30 min
- Updates: 4 · Affected components: claude.ai
- [Vendor status page: https://stspg.io/vpnnwf2vhdv4](https://stspg.io/vpnnwf2vhdv4)
- [Company: Anthropic](https://rewindex.com/company/anthropic.md)

## 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, sol)_
## Timeline of updates

- **identified** 2026-08-14 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.
- **identified** 2026-08-15 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.
- **identified** 2026-08-15 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.
- **resolved** 2026-08-15 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

- 2026-08-14 23:57 UTC: [Major incident: Elevated errors for Claude Fable 5](https://rewindex.com/change/ib67cd82ac5a260.md)


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Canonical: https://rewindex.com/company/anthropic/incidents/hdynq1pc0fn8 · Markdown: https://rewindex.com/company/anthropic/incidents/hdynq1pc0fn8.md · JSON: https://rewindex.com/api/v1/companies/anthropic/incidents/hdynq1pc0fn8 · Generated 2026-10-18T12:36:09.829Z