{"slug": "elevated-errors-for-claude-sonnet-5-5-and-other-models", "title": "Elevated errors for Claude Sonnet 5.5 and other models", "summary": "Anthropic resolved an incident that caused elevated errors on requests to Claude Sonnet 5.5 and other Claude models, with impact lasting from 23:05 PT on October 24 (06:05 UTC on October 25) to 23:35 PT on October 24 (06:35 UTC on October 25), according to the company's status update. Anthropic said it identified the cause of the elevated errors on Claude Sonnet 5.5, deployed a fix, and monitored recovery before marking the issue resolved at 07:53 UTC on October 25. The investigating notice also listed Claude Mythos 5.1, Claude Fable 5.1, Claude Opus 5.5, and Claude Haiku 5.5 as affected.", "body_md": "Oct `25`, `07:53` UTC\n\n **Resolved** - The issue affecting Claude services has been resolved. Impact occurred from 23:05 PT on October 24 / 06:05 UTC on October 25 to 23:35 PT on October 24 / 06:35 UTC on October 25. \n\n Oct `25`, `06:35` UTC\n\n **Monitoring** - A fix has been deployed for the issue affecting Claude services and we are monitoring for recovery. \n\n Oct `25`, `06:27` UTC\n\n **Identified** - We have identified the cause of elevated errors on requests to Claude Sonnet 5.5 and are working on a fix. We will provide an update as soon as possible. \n\n Oct `25`, `06:14` UTC\n\n **Investigating** - 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.", "url": "https://wpnews.pro/news/elevated-errors-for-claude-sonnet-5-5-and-other-models", "canonical_source": "https://status.claude.com/incidents/334jvgbrc4ff", "published_at": "2026-10-25 07:53:39+00:00", "updated_at": "2026-10-25 08:10:56.461574+00:00", "lang": "en", "topics": ["artificial-intelligence", "large-language-models", "ai-infrastructure"], "entities": ["Anthropic", "Claude Sonnet 5.5", "Claude Mythos 5.1", "Claude Fable 5.1", "Claude Opus 5.5", "Claude Haiku 5.5"], "also_reported_by": [], "alternates": {"html": "https://wpnews.pro/news/elevated-errors-for-claude-sonnet-5-5-and-other-models", "markdown": "https://wpnews.pro/news/elevated-errors-for-claude-sonnet-5-5-and-other-models.md", "text": "https://wpnews.pro/news/elevated-errors-for-claude-sonnet-5-5-and-other-models.txt", "jsonld": "https://wpnews.pro/news/elevated-errors-for-claude-sonnet-5-5-and-other-models.jsonld"}}