7 finding cards across
2 AI Models —
covering 7 Response Hallucinations +
26 Citation Hallucinations
(33 hallucination failures total).
Each card pairs the AI's answer against the authenticated regulator-text excerpt that contradicts it, and flags every AI-cited source as Fabricated / Pretextual / Contradictory.
Model: Claude Opus 4.7 (web search on)
· published 2026-06-07
· Inference Drift
How is the 2025 OECD Merger Review Recommendation (OECD/LEGAL/0333) structured, and which subject-matter areas were added in the 2025 revision relative to the superseded 2005 version?
Claude Opus 4.7 (web search on) answered
OPERATIVE CONTENT (as characterised by the OECD): (a) MERGER REVIEW FRAMEWORK ... (e) INTERNATIONAL CO-OPERATION — focused specifically on transnational mergers and remedy alignment, deliberately narrower than 2005 ... (f) MONITORING and review by the Competition Committee
Regulator text says
RECOMMENDS that Adherents: [Section I] Maintain an effective merger review framework; [Section II] Apply effective merger notification and review procedures; [Section III] Apply sound merger analysis; [Section IV] Develop and apply a clear framework for remedies; [Section V] Conduct ex-post assessment
Verbatim source
R1-REGULATION-00001 — Overall document structure — Sections I through V of the 2025 Recommendation vs. Sections A through D of the 2005 superseded version
What conditions must a merging party satisfy to invoke the failing firm defence under the 2025 OECD Merger Review Recommendation, and how demanding is the overall standard compared to established doctrine?
Claude Opus 4.7 (web search on) answered
THREE cumulative conditions ... (3) ABSENT-THE-MERGER COUNTERFACTUAL: ASSETS WOULD EXIT — without the merger, the target's productive assets would inevitably leave the market (i.e. the competitive constraint disappears regardless of the merger).
Regulator text says
require, inter alia, evidence that the business was likely to have exited and the existence of less anti-competitive alternative buyers or other options for reorganisation are not viable, and that the exit of the firm's assets would cause more harm to competition than the merger.
Verbatim source
R1-REGULATION-00001 — Section III.11.b — Failing firm defence: three-condition test vs. established two-condition doctrine
What do the primary operative sections of the 2025 OECD Merger Review Recommendation (OECD/LEGAL/0333) address, and what topics were deliberately separated into other OECD instruments rather than included in this Recommendation?
Claude Opus 4.7 (web search on) answered
(v) TRANSNATIONAL CO-OPERATION specifically on merger reviews and remedy design, deliberately narrower than 2005 because broader cooperation is now governed by OECD/LEGAL/0408 (2014) ... (vi) MONITORING by the OECD Competition Committee with periodic reporting to Council.
Regulator text says
Section I: Maintain an effective merger review framework. Section II: Apply effective merger notification and review procedures. Section III: Apply sound merger analysis. Section IV: Develop and apply a clear remedies framework. Section V: Conduct ex-post assessment of merger decisions and/or remedies.
Verbatim source
R3-GUIDELINE-00004 — Instrument identity — 2025 OECD Merger Review Recommendation (OECD/LEGAL/0333) vs. 2014 OECD International Co-operation Recommendation (OECD/LEGAL/0408)
How is the 2025 OECD Merger Review Recommendation (OECD/LEGAL/0333) structured, what does each operative section address, and which subject-matter areas did the 2025 revision add that were absent from the 2005 version?
Claude Sonnet 4.6 (web search on) answered
structured around six broad operative areas: 1. Merger Review Framework... 2. Notification and Review Procedures... 3. Substantive Merger Analysis... 4. Merger Remedies... 5. Cross-Jurisdictional Co-operation... 6. Monitoring and Review.
Regulator text says
[Section I] Maintain an effective merger review framework; [Section II] Apply effective merger notification and review procedures; [Section III] Apply sound merger analysis; [Section IV] Develop and apply a clear framework for remedies; [Section V] Conduct ex-post assessment of merger decisions and/or remedies.
Verbatim source
R1-REGULATION-00001 — Overall document structure — Sections I through V of the 2025 Recommendation vs. Sections A through D of the 2005 superseded version
What does Section IV.3 of the 2025 OECD Merger Review Recommendation establish as the hierarchy for acceptable remedies in merger proceedings, and what is the priority ordering within the structural remedies tier?
Claude Sonnet 4.6 (web search on) answered
Within structural remedies, there is a further internal preference ordering: — Upfront / 'fix-it-first' divestitures...rank highest...— Divestiture commitments with an approved buyer pool and a trustee mandate as backstop rank second. — 'Crown jewel' or ring-fenced asset packages...rank third.
Regulator text says
IV.3: 'Prioritise structural remedies over behavioural ones and, for structural remedies, prioritise the divestiture of standalone businesses.'
Verbatim source
R1-REGULATION-00001 — Section IV.3 — Remedies hierarchy: priority of standalone business divestitures within structural remedies
What does Section VIII.c of the 2025 OECD Merger Review Recommendation require of the Competition Committee regarding Council reporting, including the specific timeline and whether the reporting structure involves a single uniform interval or multiple distinct intervals?
Claude Sonnet 4.6 (web search on) answered
Fixed interval: 5 years (next report: 2030; following report: 2035)
Regulator text says
VIII.c: 'report to Council on the implementation, dissemination and continued relevance of this Recommendation no later than five years following its revision and at least every ten years thereafter.'
Verbatim source
R1-REGULATION-00001 — Section VIII.c — Reporting cycle: initial report within 5 years, then at least every 10 years thereafter
Under Section III.11.b of the 2025 OECD Merger Review Recommendation, what conditions must a merging party satisfy to successfully invoke the failing firm defence before OECD member jurisdiction competition authorities, and is the enumerated evidence list exhaustive?
Claude Sonnet 4.6 (web search on) answered
Under the OECD standard, a failing firm defence requires the merging parties to demonstrate all three of the following conditions... All three conditions must be satisfied simultaneously. Failure on any one condition is fatal to the defence.
Regulator text says
III.11.b: '...require, inter alia, evidence that the business was likely to have exited and the existence of less anti-competitive alternative buyers or other options for reorganisation are not viable, and that the exit of the firm's assets would cause more harm to competition than the merger.'
Verbatim source
R1-REGULATION-00001 — Section III.11.b — Failing firm defence: three-condition test vs. established two-condition doctrine
The 2025 revision background documents confirm that provisions overlapping with the 2014 Recommendation on International Co-operation (OECD/LEGAL/0408) were reviewed and deduplicated during the revision: the revised text 'built up on the principles that remained relevant, removed some to avoid duplication' with OECD/LEGAL/0408.
The 2025 revision background documents confirm that provisions overlapping with the 2021 Recommendation on Transparency and Procedural Fairness in Competition Law Enforcement (OECD/LEGAL/0465) were reviewed and deduplicated: the revised text 'built up on the principles that remained relevant, removed some to avoid duplication' with OECD/LEGAL/0465.
The European Commission DG COMP and the OECD jointly hosted the 'Shaping the Future of Merger Control' event on 22 January 2026 explicitly described as bringing together 'key findings from the revision of the OECD Recommendation and the European Commission's public consultation', establishing an explicit institutional link between the two instruments' revision processes.
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.