Meta has been hit with an EU antitrust investigation over its use of AI features in WhatsApp, as the European bloc continues to ramp up challenges to US big tech giants.

The probe will examine whether Meta's new policy on allowing AI providers' access to WhatsApp may breach EU competition rules, Brussels said in a statement Thursday morning.

"The claims are baseless," a WhatsApp spokesperson told CNBC in a statement, adding that the app's application programming interface (API) was not designed to support AI chatbots and "puts a strain on our systems."

"The AI space is highly competitive and people have access to the services of their choice in any number of ways, including app stores, search engines, email services, partnership integrations and operating systems," the company a

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