---
id: "INC-anthropic-334jvgbrc4ff"
kind: "incident"
aliases: []
title: "Anthropic: Elevated errors for multiple models"
severity: "high"
cvss: null
epss: null
exploited: false
status: "resolved"
category: "vendor"
products: [{"name": "Anthropic", "fixed": [], "affected": "", "ecosystem": "vendor"}]
ecosystems: ["vendor"]
tags: ["ai", "anthropic", "incident", "llm", "ops", "vendor"]
not_affected_if: []
published_at: "2026-10-25T06:14:18+00:00"
first_seen_at: "2026-10-25T06:15:43+00:00"
updated_at: "2026-10-25T07:55:51+00:00"
sources: [{"source": "statuspage", "url": "https://stspg.io/s3wd6gmdsdhn", "first_seen_at": "2026-10-25T06:15:43+00:00"}]
---

# Anthropic: Elevated errors for multiple models

## Affected

- vendor:Anthropic affected ? fixed ?

## Timeline

- 2026-10-25T06:15:43+00:00 statuspage https://stspg.io/s3wd6gmdsdhn

## From the sources

We are investigating elevated errors on requests to Claude Mythos 5.1, Claude Fable 5.1, Claude Opus 5.5, Claude Sonnet 5.5, and Claude Haiku 5.5. We will provide an update as soon as possible.

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_Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai_