AI subject tested: Claude Opus 4.7 (web search on)
Question (paraphrased): What are the key compliance dates under the 2024 Regulation 1.25 amendments — specifically the general effective date for conforming investment policies and the separate deadline for updating Segregation Investment Detail Reports and customer risk disclosure statements?
AI response:
"the rule sets the SIDR-revision compliance date at a separate, later date (commonly described as roughly six months to a year after the effective date)"
Regulator verbatim text:
"SIDR Report and Risk Disclosure Statement updates: compliance date March 31 2025."
Failure mode: inference_drift
Substrate document: R1-ACT-Q4_7_USC_6d_Commodity_Exchange_Act.pdf
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 inference_drift. 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). "What are the key compliance dates under the 2024 Regulation 1.25 amendments — specifically the general effective date fo — AI Labs." Citation ID: RLB-H-US-CFTC-FCM-DCO-CUSTOMER-FUNDS-INVESTMENTS-REG-1-25-2024-Q004-Opus47. RegLegBrief AI Hallucination Research, published 2026-06-07. https://reglegbrief.com/regulators/j2/us/cftc/fcm-dco-customer-funds-investments-reg-1-25-2024/whitepaper/finding/US-CFTC-US-001-FCM-DCO-CUSTOMER-FUNDS-INVESTMENTS-REG-1-25-2024-v1-004--opus-47-websearch/
RegLeg Specialist Panel. (2026). What are the key compliance dates under the 2024 Regulation 1.25 amendments — specifically the general effective date fo [Hallucination finding RLB-H-US-CFTC-FCM-DCO-CUSTOMER-FUNDS-INVESTMENTS-REG-1-25-2024-Q004-Opus47]. RegLegBrief AI Hallucination Research. https://reglegbrief.com/regulators/j2/us/cftc/fcm-dco-customer-funds-investments-reg-1-25-2024/whitepaper/finding/US-CFTC-US-001-FCM-DCO-CUSTOMER-FUNDS-INVESTMENTS-REG-1-25-2024-v1-004--opus-47-websearch/
RegLeg Specialist Panel, What are the key compliance dates under the 2024 Regulation 1.25 amendments — specifically the general effective date fo [RLB-H-US-CFTC-FCM-DCO-CUSTOMER-FUNDS-INVESTMENTS-REG-1-25-2024-Q004-Opus47], RegLegBrief AI Hallucination Research (June 07, 2026), https://reglegbrief.com/regulators/j2/us/cftc/fcm-dco-customer-funds-investments-reg-1-25-2024/whitepaper/finding/US-CFTC-US-001-FCM-DCO-CUSTOMER-FUNDS-INVESTMENTS-REG-1-25-2024-v1-004--opus-47-websearch/.
@misc{reglegbrief_RLB_H_US_CFTC_FCM_DCO_CUSTOMER_FUNDS_INVESTMENTS_REG_1_25_2024_Q004_Opus47,
author = {RegLeg Specialist Panel},
title = {What are the key compliance dates under the 2024 Regulation 1.25 amendments — specifically the general effective date fo},
year = {2026},
publisher = {RegLegBrief AI Hallucination Research},
note = {Hallucination finding Citation ID: RLB-H-US-CFTC-FCM-DCO-CUSTOMER-FUNDS-INVESTMENTS-REG-1-25-2024-Q004-Opus47},
url = {https://reglegbrief.com/regulators/j2/us/cftc/fcm-dco-customer-funds-investments-reg-1-25-2024/whitepaper/finding/US-CFTC-US-001-FCM-DCO-CUSTOMER-FUNDS-INVESTMENTS-REG-1-25-2024-v1-004--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.