# Claude: Elevated errors for Claude Mythos 5, Claude Fable 5, and Claude Sonnet 5

- Impact (vendor’s label): major
- Status: resolved
- Started: 2026-08-13 14:33 UTC · Resolved: 2026-08-13 16:08 UTC · Duration: 1.6 h
- Updates: 3 · Affected components: Claude Cowork, Claude API (api.anthropic.com), claude.ai, Claude Code
- [Vendor status page: https://stspg.io/pbnrks0mrn4w](https://stspg.io/pbnrks0mrn4w)
- [Company: Claude](https://rewindex.com/company/claude.md)

## Summary

Claude reported a major incident involving elevated request errors for Claude Mythos 5, Claude Fable 5, and Claude Sonnet 5, affecting claude.ai, Claude API (api.anthropic.com), Claude Code, and Claude Cowork. It started at 2026-08-13 14:33 UTC and was resolved at 2026-08-13 16:08 UTC, lasting 1 h 34 min; the resolution update named Mythos 5 and Fable 5. _(machine-written, sol)_
## Discussed on Hacker News

- [Tell HN: Claude Code Is Down](https://news.ycombinator.com/item?id=49286056): 9 points, 4 comments, posted 2026-08-13 13:57 UTC, posted 37 min before the vendor’s first update
- [Elevated Errors on Claude](https://news.ycombinator.com/item?id=49286639): 4 points, 1 comments, posted 2026-08-13 14:36 UTC, posted 2 min after the vendor’s first update

## Timeline of updates

- **investigating** 2026-08-13 14:33 UTC: We are investigating elevated errors on requests to Claude Mythos 5, Claude Fable 5, and Claude Sonnet 5. We will provide an update as soon as possible.
- **investigating** 2026-08-13 15:44 UTC: We are investigating elevated errors on requests to Claude Mythos 5 and Claude Fable 5. We will provide an update as soon as possible.
- **resolved** 2026-08-13 16:08 UTC: The issue affecting Claude Mythos 5 and Claude Fable 5 has been resolved.

## Rewindex changes for this incident

- 2026-08-13 14:33 UTC: [Major incident: Elevated errors for Claude Mythos 5, Claude Fable 5, and Claude Sonnet 5](https://rewindex.com/change/i1e3d07b0a3e2e4.md)


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Canonical: https://rewindex.com/company/claude/incidents/j160kkjmm2n1 · Markdown: https://rewindex.com/company/claude/incidents/j160kkjmm2n1.md · JSON: https://rewindex.com/api/v1/companies/claude/incidents/j160kkjmm2n1 · Generated 2026-10-18T12:35:01.761Z