The WhatsApp API allows businesses to integrate WhatsApp messaging capabilities into their own websites and apps. There is no cost to use WhatsApp as a consumer, but businesses pay fees starting at $1 per user per year for the Business API. The Business API enables one-on-one communications between businesses and customers. WhatsApp also plans to charge for advertising in the future, though costs are not yet specified. Currently there is no individual developer access to the WhatsApp API.
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