No, WhatsApp Business API isn't free. You need to pay WhatsApp message charges for business and user-initiated messages and platform charges for using a WhatsApp business API based platform like Growby. We don't charge any additional cost per message.
If you are wondering what
WhatsApp price you have to pay, head over to the link. We have curated the best possible solution to accommodate your needs to give you the best results and much more.