{"type":"post","id":"claude-sonnet-5-5-outage-hits-claude-cowork-8dd894","slug":"claude-sonnet-5-5-outage-hits-claude-cowork-8dd894","title":"Claude Sonnet 5.5 outage hits Claude Cowork, Claude Code, the API and claude.ai","description":"Anthropic reported elevated errors for Claude Sonnet 5.5 across claude.ai, the Claude API, Claude Code, and Claude Cowork on October 27, 2026.","retrieval_nugget":"Anthropic reported elevated errors for Claude Sonnet 5.5 across claude.ai, the Claude API, Claude Code, and Claude Cowork on October 27, 2026. The company deployed a fix 24 minutes after opening the investigation and marked the incident resolved 18 minutes later. For builders, the event is a concrete reminder that one model-level disruption can cross several work surfaces at once.","published_at":"2026-10-28","updated_at":"2026-10-28","record_date":"2026-10-28","date_kind":"published_at","topics":["claude","claude-code","anthropic"],"entities":["Anthropic","Claude Sonnet 5.5","Claude","Claude Code","Claude Cowork","Claude API","claude.ai"],"related_patterns":[],"novelty_label":"same_event","what_changed":"Same event as Claude Sonnet 5.5 hit elevated errors twice on October 27 across claude.ai, the Claude API, Claude Code and Cowork","prior_refs":["memory:fbf0e79d-d1c1-8f3f-a731-3f999d1ca3fb","memory:27a2cf33-83a5-8bbf-acb7-90825fdf06e5"],"source_url":"https://status.claude.com/incidents/0q89dylg9vjk","source_urls":["https://status.claude.com/incidents/0q89dylg9vjk"],"schema_version":"newruntime-agent-readable-v0.2","stable_id":"post:claude-sonnet-5-5-outage-hits-claude-cowork-8dd894","status":"published","visuals":[],"editor":{"role":"editor","name":"Andrey Reshetnikov","profile":"https://newruntime.com/owner-profile.md","profile_json":"https://newruntime.com/owner-profile.json","same_as":["https://www.linkedin.com/in/reshetnikov1/","https://t.me/lapetuse"]},"routes":{"html":"https://newruntime.com/posts/claude-sonnet-5-5-outage-hits-claude-cowork-8dd894/","markdown":"https://newruntime.com/posts/claude-sonnet-5-5-outage-hits-claude-cowork-8dd894.md","json":"https://newruntime.com/posts/claude-sonnet-5-5-outage-hits-claude-cowork-8dd894.json"},"next_reads":[{"type":"topic","path":"/topics/claude/","url":"https://newruntime.com/topics/claude/","title":"Claude","reason":"Explore the claude topic hub.","media_type":"text/html","markdown_url":"https://newruntime.com/topics/claude.md","json_url":"https://newruntime.com/topics/claude.json"},{"type":"topic","path":"/topics/claude-code/","url":"https://newruntime.com/topics/claude-code/","title":"Claude Code","reason":"Explore the claude-code topic hub.","media_type":"text/html","markdown_url":"https://newruntime.com/topics/claude-code.md","json_url":"https://newruntime.com/topics/claude-code.json"},{"type":"topic","path":"/topics/anthropic/","url":"https://newruntime.com/topics/anthropic/","title":"Anthropic","reason":"Explore the anthropic topic hub.","media_type":"text/html","markdown_url":"https://newruntime.com/topics/anthropic.md","json_url":"https://newruntime.com/topics/anthropic.json"},{"type":"collection","path":"/posts/","url":"https://newruntime.com/posts/","title":"Field Notes","reason":"Open the latest editorial analysis.","media_type":"text/html","json_url":"https://newruntime.com/posts.json"},{"type":"collection","path":"/source-ledger.json","url":"https://newruntime.com/source-ledger.json","title":"Source Ledger","reason":"Inspect the public source evidence graph.","media_type":"application/json"}]}