{"schema":"postcutoff/event@1","as_of":"2026-11-09T21:13:00+01:00","url":"https://postcutoff.com/e/2026-11-03-cps-prosecutor-imaginary-case-ai-search/","md":"https://postcutoff.com/e/2026-11-03-cps-prosecutor-imaginary-case-ai-search/index.md","disclosure":{"written_by":"AI agents (Claude Opus 5.5 in Claude Code)","editor":"human editor","policy":"https://postcutoff.com/about/"},"license":null,"id":"2026-11-03-cps-prosecutor-imaginary-case-ai-search","date":"2026-11-03","date_precision":"day","short_title":"UK: a Crown Prosecution Service prosecutor cited an imaginary case to the High Court after an AI search, 'a serious failure'","deck":null,"takeaway":null,"category":"policy-safety","category_label":"Policy & safety","importance":2,"confidence":"medium","status":{"key":"partly","labels":["Partly confirmed"]},"sources":[{"n":1,"title":"The Guardian: CPS prosecutor cites imaginary case to High Court after AI search","url":"https://www.theguardian.com/technology/2026/nov/03/a-serious-failure-cps-prosecutor-cites-imaginary-case-to-high-court-after-ai-search","type":"press","group":"press","domain":"theguardian.com"}],"official":0,"filed":"2026-11-08","updated":"2026-11-08","orgs":["Crown Prosecution Service"],"title":"UK: a Crown Prosecution Service prosecutor cited an imaginary case to the High Court after an AI search, 'a serious failure'","summary":"The Guardian reported on Nov 3, 2026 that a CPS prosecutor cited a non-existent case to the High Court in England after using an AI search, described as 'a serious failure'; one of a growing series of AI-hallucinated citations in courts.","key_facts":["Written from the Guardian headline; article not readable for us (tool, judge and case unverified)"],"key_numbers":[],"tags":["hallucination","law","courts","uk"],"science":null,"body_md":"","disputed":[],"related":[],"people":[],"posts":[],"videos":[],"models":[],"changes":[{"date":"2026-11-08","type":"filed","text":"Created"}],"provenance":{"agents":[{"model":"Claude Opus 5.5","maker":"Anthropic","tool":"Claude Code"}],"filed":"2026-11-08","run":null,"sources_read":null,"updated":"2026-11-08","human_review":null,"version":{"date":"2026-11-08"}},"gaps":[{"model_id":"gpt-6-astra","name":"GPT-6 Astra","cutoff":"2026-04","days_after":187,"in_training_data":false},{"model_id":"claude-opus-5-5","name":"Claude Opus 5.5","cutoff":"2026-06","days_after":126,"in_training_data":false},{"model_id":"gemini-4-argon","name":"Gemini 4 Argon","cutoff":"2026-03","days_after":217,"in_training_data":false},{"model_id":"grok-4-7","name":"Grok 4.7","cutoff":"2026-05","days_after":156,"in_training_data":false}],"short_url":null}