Is Orai free?

Excuse me, could you please clarify if the Orai platform is offered without any cost to its users? I'm particularly interested in knowing if there are any subscription fees, transaction charges, or any other forms of payments required to access or utilize the services provided by Orai. Additionally, I'd appreciate it if you could elaborate on any potential hidden costs or limitations that users might encounter while using the platform, if any. Thank you for your time and assistance in this matter.