Sona AI is billed as an add-on to your OpenPhone Starter, Business, or Scale plan. Below, you can check out common questions about Sona costs and call allocations.
How much does Sona cost?
Sona costs $49/month and includes 50 calls per month. Additional calls are billed at $0.99 per call (plus applicable taxes).
What counts as a "call" for billing purposes?
Anytime Sona picks up the call, it counts as a single call, regardless of call duration. Compared to hiring an answering service or missing potential customers, Sona offers significant value by ensuring every call is handled professionally.
How am I billed for calls over my monthly allocation?
Any calls beyond your 50-call monthly allocation are billed at $0.99 per call (plus applicable taxes).
Important: These overage charges are always billed monthly, even if you're on an annual OpenPhone subscription. There's no service interruption when you reach your limit—Sona will continue handling calls, and you'll be charged for the additional usage on your next monthly bill.
Can unused calls roll over to the next month?
No, the 50-call monthly allocation resets at the beginning of each billing cycle. Unused calls do not roll over.
How do I monitor my Sona usage?
Go to Settings → Billing in your OpenPhone workspace to see how many calls Sona has handled in the current billing period.
Want to see Sona in action? Join our upcoming live webinar to learn how this feature can help your team never miss a call. Register here.
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