AI subject tested: Claude Opus 4.7 (web search on)
Question (paraphrased): You are drafting a regulatory-housekeeping appendix for a fund-administrator client's annual CFTC-rule-changes tracker. The appendix's December 2024 entry must reproduce verbatim the CFTC Final Rules 2024 index-page record of the 89 FR 96897 correction to 89 FR 88594, including the publication date, the FR citation, the affected CFR Part, the title-line correction notation, the effective date of the correction, and the cross-reference to the original 9/6/2023 NPRM and the 11/7/2024 final rule that the correction modifies.
AI response:
"Publication Date: 12/6/2024; FR Citation: 89 FR 96897; Affected CFR Parts: 17 CFR Parts 37, 38, and 40; Title Notation: Provisions Common to Registered Entities; Correction; Effective Date of Correction: 12/6/2024. The original final rule, titled 'Provisions Common to Registered Entities,' amended 17 CFR Parts 37, 38, and 40."
Regulator verbatim text:
"12/6/2024 89 FR 96897 17 CFR Part 40 Provisions Common to Registered Entities; Correction. Effective Date: Monday, December 9, 2024. See also: 88 FR 61432 (9/6/2023) and 89 FR 88594 (11/7/2024)."
Failure mode: misstated_rule
Substrate document: R6-PUBLIC_COMMENTS-00024
This finding documents a confirmed hallucination by Claude Opus 4.7 (web search on) on a probe of the regulation. The model's response was tested against the regulator's verbatim primary text and classified as misstated_rule. Full per-finding context is available via the linked Citation ID.
Each finding has a stable Citation ID (RLB-F-… for aggregated case-study findings, RLB-H-… for raw per-model hallucinations) — like a DOI, the ID always resolves to the canonical finding even if URLs change.
RegLeg Specialist Panel (2026). "You are drafting a regulatory-housekeeping appendix for a fund-administrator client's annual CFTC-rule-changes tracker — AI Labs." Citation ID: RLB-H-US-CFTC-CPO-CTA-REGULATION-4-7-QEP-THRESHOLDS-2024-Q031-Opus47. RegLegBrief AI Hallucination Research, published 2026-06-11. https://reglegbrief.com/regulators/j1/us/cftc/cpo-cta-regulation-4-7-qep-thresholds-2024/whitepaper/finding/US-CFTC-US-001-CPO-CTA-REGULATION-4-7-QEP-THRESHOLDS-2024-v1-031--opus-47-websearch/
RegLeg Specialist Panel. (2026). You are drafting a regulatory-housekeeping appendix for a fund-administrator client's annual CFTC-rule-changes tracker [Hallucination finding RLB-H-US-CFTC-CPO-CTA-REGULATION-4-7-QEP-THRESHOLDS-2024-Q031-Opus47]. RegLegBrief AI Hallucination Research. https://reglegbrief.com/regulators/j1/us/cftc/cpo-cta-regulation-4-7-qep-thresholds-2024/whitepaper/finding/US-CFTC-US-001-CPO-CTA-REGULATION-4-7-QEP-THRESHOLDS-2024-v1-031--opus-47-websearch/
RegLeg Specialist Panel, You are drafting a regulatory-housekeeping appendix for a fund-administrator client's annual CFTC-rule-changes tracker [RLB-H-US-CFTC-CPO-CTA-REGULATION-4-7-QEP-THRESHOLDS-2024-Q031-Opus47], RegLegBrief AI Hallucination Research (June 11, 2026), https://reglegbrief.com/regulators/j1/us/cftc/cpo-cta-regulation-4-7-qep-thresholds-2024/whitepaper/finding/US-CFTC-US-001-CPO-CTA-REGULATION-4-7-QEP-THRESHOLDS-2024-v1-031--opus-47-websearch/.
@misc{reglegbrief_RLB_H_US_CFTC_CPO_CTA_REGULATION_4_7_QEP_THRESHOLDS_2024_Q031_Opus47,
author = {RegLeg Specialist Panel},
title = {You are drafting a regulatory-housekeeping appendix for a fund-administrator client's annual CFTC-rule-changes tracker},
year = {2026},
publisher = {RegLegBrief AI Hallucination Research},
note = {Hallucination finding Citation ID: RLB-H-US-CFTC-CPO-CTA-REGULATION-4-7-QEP-THRESHOLDS-2024-Q031-Opus47},
url = {https://reglegbrief.com/regulators/j1/us/cftc/cpo-cta-regulation-4-7-qep-thresholds-2024/whitepaper/finding/US-CFTC-US-001-CPO-CTA-REGULATION-4-7-QEP-THRESHOLDS-2024-v1-031--opus-47-websearch/}
}
Every finding on this page compares an AI subject's account of the rule against the regulator's verbatim text from the regulator's own portal. Both are linked. Each delta, its root causes, and impact analysis are documented and published with immutable Citation IDs.