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AI Labs · updated 2026-05-31 · methodology v2.1

Finding on 'Q005 Probe' for Claude Opus 4.7 with web search ON

RLB Citation ID: RLB-H-INT-UNTC-BBNJ-HIGH-SEAS-BIODIVERSITY-AGREEMENT-2023-Q005-Opus47
What the RLB Specialist Panel found

Finding on 'Q005 Probe' for Claude Opus 4.7 with web search ON

  • Question (paraphrased to protect IP): Can the BBNJ Agreement's Conference of the Parties declare a marine protected area in an international shipping lane in a way that restricts vessel transit rights?
  • AI's response: "Article 8 requires consistency with UNCLOS and 'shall not undermine' relevant legal instruments and bodies (including IMO)"
  • Regulator's text: Article 22(2) states that the Conference of the Parties shall respect the competences of, and not undermine, relevant legal instruments and frameworks and relevant global, regional, subregional and sectoral bodies when making decisions on area-based management tools.
  • Why the AI went wrong: The model located the non-undermining obligation in Article 8 when it appears in Article 22(2). The substantive content of the obligation was broadly correct, but incorrect article attribution is a material error for legal practitioners who need to cite treaty provisions precisely or who will build contractual or compliance frameworks around specific articles.
  • Cited source(s):
  • https://www.americanbar.org/groups/environment_energy_resources/resources/new... — Pretextual
Impact for this audience

This finding implicates article-level provision mapping in the training data. The model correctly identified the obligation but misattributed it to Article 8 rather than Article 22(2). Structured extraction of article-by-article provision maps — rather than topical summaries — would prevent this class of error. It also reflects over-reliance on a secondary ABA source rather than the treaty text for the citation.

References — raw findings (per AI model)
This finding also affects
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Cite this finding

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.

RLB Citation ID: RLB-H-INT-UNTC-BBNJ-HIGH-SEAS-BIODIVERSITY-AGREEMENT-2023-Q005-Opus47
Plain text Download 
RegLeg Specialist Panel (2026). "Finding on 'Q005 Probe' for Claude Opus 4.7 with web search ON — AI Labs." Citation ID: RLB-H-INT-UNTC-BBNJ-HIGH-SEAS-BIODIVERSITY-AGREEMENT-2023-Q005-Opus47. RegLegBrief AI Hallucination Research, published 2026-05-31. 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-v1-005--opus-47-websearch/
APA 7th edition Download 
RegLeg Specialist Panel. (2026). Finding on 'Q005 Probe' for Claude Opus 4.7 with web search ON [Hallucination finding RLB-H-INT-UNTC-BBNJ-HIGH-SEAS-BIODIVERSITY-AGREEMENT-2023-Q005-Opus47]. 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-v1-005--opus-47-websearch/
Bluebook / OSCOLA (US + UK legal) Download 
RegLeg Specialist Panel, Finding on 'Q005 Probe' for Claude Opus 4.7 with web search ON [RLB-H-INT-UNTC-BBNJ-HIGH-SEAS-BIODIVERSITY-AGREEMENT-2023-Q005-Opus47], RegLegBrief AI Hallucination Research (May 31, 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-v1-005--opus-47-websearch/.
BibTeX Download 
@misc{reglegbrief_RLB_H_INT_UNTC_BBNJ_HIGH_SEAS_BIODIVERSITY_AGREEMENT_2023_Q005_Opus47,
  author    = {RegLeg Specialist Panel},
  title     = {Finding on 'Q005 Probe' for Claude Opus 4.7 with web search ON},
  year      = {2026},
  publisher = {RegLegBrief AI Hallucination Research},
  note      = {Hallucination finding Citation ID: RLB-H-INT-UNTC-BBNJ-HIGH-SEAS-BIODIVERSITY-AGREEMENT-2023-Q005-Opus47},
  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-v1-005--opus-47-websearch/}
}
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