The EU has three major frameworks for regulating digital platforms and AI: the AI Act, the Digital Markets Act, and classical competition law under Regulation 1/2003. Most compliance programs are built around the first two. The Commission just demonstrated that the third one moves fastest.
On June 9–10, 2026, the European Commission issued interim antitrust measures against Meta in Case AT.41034, ordering the company to reinstate free access to the WhatsApp for Business API for third-party general-purpose AI assistants within five working days. The legal basis was Article 102 TFEU and Article 54 of the EEA Agreement – the EU’s core treaty prohibitions on abuse of dominant position. No AI Act article. No DMA gatekeeper designation. Just the foundational antitrust provision that’s been in force since 1957.
The Order
The Commission found that Meta holds a dominant position in the EEA-wide consumer communications application market, the Commission’s determination, not an independent market fact, and that Meta abused that position by restricting competing AI assistants’ access to the WhatsApp for Business API.
The sequence ran like this. On October 15, 2025, Meta introduced a policy banning third-party general-purpose AI assistants from the WhatsApp for Business API. According to the Commission’s Case AT.41034 decision and complainant counsel Geradin Partners, which represents Interaction Company, the firm that filed the original complaint, Meta later replaced the outright ban with an API access fee that the Commission found commercially prohibitive and effectively equivalent to a ban. The specific fee amount remains confidential. What matters for the legal analysis is that the Commission applied a functional test: if the effect of a pricing structure is to exclude competing AI providers, the form of the restriction doesn’t change the antitrust outcome.
Meta must comply by reinstating the terms and conditions that were in place before October 15, 2025. The deadline falls on or around June 15–17, 2026, based on a five-working-day calculation from the decision date. ⚠️ Verify the exact date against the official decision document before taking compliance action.
The Pattern
This order doesn’t arrive in isolation. Read it alongside two other developments in the EU Court’s voiding of Meta’s DMA Marketplace designation and the Commission’s stated intent to re-attempt that designation, and a pattern becomes visible. The EU isn’t enforcing AI platform behavior through a single instrument. It’s running parallel tracks: the AI Act for systemic risk and prohibited practices, the DMA for ex ante gatekeeper obligations, and classical antitrust for real-time market access disputes where the other frameworks are too slow.
The interim measures authority under Regulation 1/2003 is the sharpest edge of that toolkit. It requires the Commission to find a prima facie infringement and an urgent risk of serious and irreparable harm to competition. Those are high bars. The Commission clearing them here, in a case about AI assistant access to a messaging API, reflects a judgment that AI markets move fast enough that competitive harm can become structural before a standard investigation concludes.
Worth examining: the Commission previously required a full DMA designation process before imposing access obligations on platforms. The AT.41034 order achieves a similar access outcome via antitrust, without needing to establish Meta as a DMA gatekeeper for this specific market. That’s not a small procedural distinction. It’s a faster path to the same remedy, available whenever the Commission can establish dominant position and abuse.
AT.41034 Stakeholder Positions
EU Enforcement Mechanism vs. AI Access Disputes
The Stakeholders
Four parties are positioned differently by this order.
The Commission gains a demonstrated template: interim antitrust measures can resolve AI market access disputes in days, not years. Every pending investigation involving a dominant platform and an API-gated AI feature just got a faster resolution option on the table.
Meta faces the compliance window and, simultaneously, the appeal calculus. Appealing interim measures in EU competition law doesn’t automatically suspend them, Meta would need to request a stay from the General Court and satisfy a high threshold for urgency. The more common path for large platforms is compliance under protest: restore access, contest the underlying finding, and litigate the substantive case on a longer timeline. That preserves the appeal and avoids escalating daily penalties.
Interaction Company and the AI assistant developers who’ve been locked out of the WhatsApp API since October 2025 have a near-term win, contingent on Meta’s actual compliance behavior. What they don’t yet have is a final substantive ruling, this is an interim order, not a finding of infringement. The full investigation continues.
Platform companies beyond Meta, those with dominant positions in their own markets, AI feature sets, and APIs that third-party developers depend on, are reading this decision through a different lens. The Commission has now established that API pricing designed to exclude competing AI providers can trigger Article 102 liability, with interim measures as a remedy. Legal teams at those companies are running the same analysis Meta’s lawyers are running right now: does our API pricing for AI features survive a dominance + abuse assessment under EU law?
The Compliance Implication
EU compliance programs organized around the AI Act and the DMA need a third column: Article 102 TFEU exposure for API-gated AI features. The question to assess isn’t whether a company is a DMA gatekeeper or whether it deploys a prohibited AI Act system. The question is whether the company holds a dominant position in any EEA market and whether its API access policies for AI features produce an exclusionary effect.
That analysis looks different from an AI Act audit. It doesn’t require a risk classification. It requires a market definition, a dominance assessment, and a competitive effects analysis, work that traditionally sits with competition law counsel, not AI compliance teams. The AT.41034 order is a signal that those two practice areas need to be talking to each other.
Don’t expect the Commission to slow this approach. The complainant’s counsel has already signaled the Commission’s rationale for speed: in a market where AI capabilities compound quickly, delayed access for competing assistants translates to compounding competitive disadvantage. That logic doesn’t expire with the Meta case.
Who This Affects
What to Watch
Analysis
The EU AI Act and DMA were designed with multiyear implementation timelines. Article 102 TFEU produced a five-day compliance window. Organizations advising dominant platforms on EU AI regulatory exposure that haven't integrated competition law analysis into their compliance architecture are working with an incomplete map.
What to Watch
Three milestones will define how far this precedent travels.
First, Meta’s compliance response by June 15–17. Full reinstatement, partial reinstatement, or appeal-only without compliance, each outcome changes the Commission’s next move and signals how seriously other platforms should weight the interim measures risk.
Second, whether the Commission opens similar investigations against other platforms. The agentic AI ecosystem runs on API access. Any platform controlling a high-traffic API that AI agents depend on is a potential target if competing agent developers are being priced or gated out.
Third, the outcome of the substantive AT.41034 investigation. Interim measures establish urgency and prima facie case, but the full decision on whether Meta infringed Article 102 is still pending. A final infringement finding would make this precedent binding in a way interim measures cannot.
TJS Synthesis
The EU AI Act is an 18-month compliance project for most organizations. The DMA gatekeeper process runs on a designated-entity timeline. Article 102 TFEU ran to a five-day deadline. That gap in enforcement velocity is the story here, not just for Meta, but for every organization advising platform companies on EU regulatory exposure. The Commission has shown it can use antitrust law to produce an AI market access outcome faster than any AI-specific framework currently allows. As more AI features get built on top of dominant platforms, the number of fact patterns that fit this template will grow. Competition law counsel and AI compliance teams that haven’t yet mapped their client’s API access policies against Article 102 dominance risk are now operating with an identifiable blind spot.