Brussels just told Meta to open its messaging crown jewel. The European Commission ordered Meta to restore WhatsApp access for rival AI assistants within five days — or face fines of up to 10% of its global revenue. It is a landmark interoperability demand that could reshape how AI assistants reach billions of users, and a fresh escalation in the EU’s war with Big Tech.
The order
The directive is blunt and urgent. The Commission gave Meta a five-day deadline to let third-party AI assistants operate on WhatsApp, with the threat of penalties reaching 10% of worldwide turnover — a sum that, for a company Meta’s size, runs into the tens of billions. The short timeline and massive potential fine signal that regulators are willing to move fast and hit hard.
Why interoperability matters
This is about access to users. WhatsApp is one of the world’s most-used messaging platforms, and being able to operate within it is enormously valuable for any AI assistant seeking distribution. By forcing Meta to admit rivals, the EU aims to prevent the company from using its dominant platform to favor its own AI and lock out competitors — the core concern behind its gatekeeper rules.
The DMA hammer
The order flows from the Digital Markets Act. The DMA designates dominant platforms as ‘gatekeepers’ and requires them to open up to competitors rather than self-preference. Meta has already been fined under the regime — €500 million earlier this year — and the WhatsApp demand shows regulators are prepared to dictate specific, time-bound changes to how these platforms operate, not just levy penalties after the fact.
The transatlantic tension
The move deepens a simmering conflict. The EU’s aggressive enforcement against American tech giants has drawn warnings of retaliation from Washington, including threats of tariffs, framing the disputes as discrimination against US firms. The WhatsApp order adds to a growing list of EU demands on Apple, Google, Meta and others, intensifying a standoff that increasingly spills from regulation into trade.
Why it matters
The stakes reach beyond one app. If Meta must open WhatsApp to rival AIs, it sets a powerful precedent for forcing interoperability across dominant platforms — potentially reshaping the competitive landscape for AI assistants worldwide. It tests whether regulators can truly pry open closed ecosystems, and how far they can dictate the technical terms. The outcome will influence how billions access AI.
The bottom line
The EU’s order for Meta to open WhatsApp to rival AI assistants — within five days or face huge fines — is a bold assertion of regulatory power and a potential turning point for AI competition. It pressures Meta, sets an interoperability precedent, and escalates the transatlantic tech fight. How Meta responds, and whether the access sticks, will be closely watched far beyond Europe.