Meta Ordered to Reopen WhatsApp Access for Rival AI Assistants Amid Antitrust Probe

The European Commission has issued an interim order requiring Meta to restore access to its popular messaging platform, WhatsApp, for rival artificial intelligence (AI) chatbot makers. This move is part of a broader antitrust investigation into the company's business practices and challenges Meta's ability to use WhatsApp as a distribution advantage for its own AI services in Europe.

WhatsApp has become an essential tool for everyday communication, with over three billion users worldwide. The platform also serves as a hub for businesses to communicate with customers through the WhatsApp Business API. However, Meta updated these terms in 2025 to block general-purpose AI assistants from using the platform, sparking concerns about competition and fairness.

The European Commission's decision turns messaging access into one of the first real tests of competition policy in consumer AI. Regulators are essentially saying that control over a platform cannot quietly become control over the next layer of AI services built on top of it. This is a direct challenge to the playbook used by large consumer platforms, which often prioritize their own interests over those of competitors.

Meta has been ordered to comply with the interim measures or face fines of up to 10% of its annual revenue. The company plans to appeal the decision, arguing that Brussels is forcing it to give away a paid WhatsApp Business product to some of the largest AI companies in the world. However, regulators appear unconvinced by Meta's claims and are pushing for greater competition in the market.

The case has significant implications for startups developing AI assistants. Distribution is often the hardest part of consumer AI, as models improve quickly and interfaces become familiar. A startup can build a clever product but still lose if the biggest platforms close off daily entry points. Access to WhatsApp could be meaningful for rival AI assistant companies, especially in Europe where messaging is central to commerce and daily life.

Rivals will still have to deal with Meta's technical rules, privacy requirements, rate limits, and product design constraints even after gaining access to WhatsApp. They must also convince users to choose them over Meta AI, which benefits from being native, visible, and backed by a company willing to invest heavily in AI features across its platforms.

The Commission's decision sends a signal that regulators are paying attention to the intersection of platform power and AI competition. This is different from the old pattern of regulators arriving years after network effects have hardened. In fast-moving technology markets, delays can decide outcomes before legal cases are complete.

US regulators will be watching this development closely, as it gives them a live example of treating AI distribution as a competition issue rather than just a product design choice. The Federal Trade Commission and the Justice Department have already shown interest in platform power, app store rules, and AI competition.