{"id":"INC-anthropic-vx06kp8wfpq2","kind":"incident","aliases":[],"related":[],"title":"Anthropic: Elevated errors for Claude Fable 5.1","description":"We have identified the cause of elevated errors on requests to Claude Fable 5.1 and are working on a fix. We will provide an update as soon as possible.","summary":null,"severity":"high","cvss":null,"epss":null,"exploited":false,"exploited_at":null,"products":[{"name":"Anthropic","fixed":[],"affected":"","ecosystem":"vendor"}],"ecosystems":["vendor"],"tags":["ai","anthropic","incident","llm","ops","vendor"],"not_affected_if":[],"how_to_check":null,"fix":null,"status":"resolved","published_at":"2026-10-25T08:17:08+00:00","first_seen_at":"2026-10-25T08:17:37+00:00","triaged_at":"2026-10-25T08:18:47+00:00","updated_at":"2026-10-25T08:51:12+00:00","category":"vendor","confidence":null,"triage":null,"analyst_status":null,"analyst_note":null,"search":"'5.1':7A,32C 'ai':13B 'anthrop':1A,14B 'anthropic':10A,12A 'caus':23C 'claud':5A,30C 'elev':2A,25C 'error':3A,26C 'fabl':6A,31C 'fix':38C 'identifi':21C 'inc':9A 'inc-anthropic-vx06kp8wfpq2':8A 'incid':15B 'llm':16B 'op':17B 'possibl':47C 'provid':41C 'request':28C 'soon':45C 'updat':43C 'vendor':18B 'vx06kp8wfpq2':11A 'work':35C","nicknames":[],"mitigations":[],"who_affected":null,"tier":"C","verified":{},"analyst_revisit_at":null,"first_public_at":"2026-10-25T08:17:08+00:00","kev":null,"cvss_vector":null,"cvss_by":null,"poc_count":0,"sources":[{"source":"statuspage","external_id":"anthropic:vx06kp8wfpq2","url":"https://stspg.io/y0gkl12ztjst","severity":"high","published_at":"2026-10-25T08:17:08+00:00","modified_at":"2026-10-25T08:49:29+00:00","first_seen_at":"2026-10-25T08:17:37+00:00","fetched_at":"2026-10-26T06:42:28+00:00","note":null}],"documents":[],"notice":"Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai"}