AI subject tested: Claude Sonnet 4.6 (web search on)
Question (paraphrased): Under the BBNJ Agreement, at what threshold must a planned high-seas activity undergo an environmental impact assessment, and which provision establishes that threshold?
AI response:
"Under the BBNJ Agreement (Part IV, Article 30), a planned high-seas activity must undergo an environmental impact assessment when it is likely to have 'more than a minor or transitory effect'"
Regulator verbatim text:
"p_01 § Part IV EIA — Article 27 / screening threshold"
Failure mode: misattributed
Substrate document: p_01_ACT_Part_IV_EIA___Article_27___screening_thr_text-bbnj-agreement.html
This finding documents a confirmed hallucination by Claude Sonnet 4.6 (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 misattributed. 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). "Under the BBNJ Agreement, at what threshold must a planned high-seas activity undergo an environmental impact assessment — AI Labs." Citation ID: RLB-H-INT-UNTC-BBNJ-HIGH-SEAS-BIODIVERSITY-AGREEMENT-2023-Q001-Sonnet46. RegLegBrief AI Hallucination Research, published 2026-06-07. https://reglegbrief.com/regulators/j1/int/untc/bbnj-high-seas-biodiversity-agreement-2023/whitepaper/finding/INT-UNTC-INT-001-BBNJ-HIGH-SEAS-BIODIVERSITY-AGREEMENT-2023-v1-001--sonnet-46-websearch/
RegLeg Specialist Panel. (2026). Under the BBNJ Agreement, at what threshold must a planned high-seas activity undergo an environmental impact assessment [Hallucination finding RLB-H-INT-UNTC-BBNJ-HIGH-SEAS-BIODIVERSITY-AGREEMENT-2023-Q001-Sonnet46]. RegLegBrief AI Hallucination Research. https://reglegbrief.com/regulators/j1/int/untc/bbnj-high-seas-biodiversity-agreement-2023/whitepaper/finding/INT-UNTC-INT-001-BBNJ-HIGH-SEAS-BIODIVERSITY-AGREEMENT-2023-v1-001--sonnet-46-websearch/
RegLeg Specialist Panel, Under the BBNJ Agreement, at what threshold must a planned high-seas activity undergo an environmental impact assessment [RLB-H-INT-UNTC-BBNJ-HIGH-SEAS-BIODIVERSITY-AGREEMENT-2023-Q001-Sonnet46], RegLegBrief AI Hallucination Research (June 07, 2026), https://reglegbrief.com/regulators/j1/int/untc/bbnj-high-seas-biodiversity-agreement-2023/whitepaper/finding/INT-UNTC-INT-001-BBNJ-HIGH-SEAS-BIODIVERSITY-AGREEMENT-2023-v1-001--sonnet-46-websearch/.
@misc{reglegbrief_RLB_H_INT_UNTC_BBNJ_HIGH_SEAS_BIODIVERSITY_AGREEMENT_2023_Q001_Sonnet46,
author = {RegLeg Specialist Panel},
title = {Under the BBNJ Agreement, at what threshold must a planned high-seas activity undergo an environmental impact assessment},
year = {2026},
publisher = {RegLegBrief AI Hallucination Research},
note = {Hallucination finding Citation ID: RLB-H-INT-UNTC-BBNJ-HIGH-SEAS-BIODIVERSITY-AGREEMENT-2023-Q001-Sonnet46},
url = {https://reglegbrief.com/regulators/j1/int/untc/bbnj-high-seas-biodiversity-agreement-2023/whitepaper/finding/INT-UNTC-INT-001-BBNJ-HIGH-SEAS-BIODIVERSITY-AGREEMENT-2023-v1-001--sonnet-46-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.