----------------------------- **While I generate an answer, here are some sources that might be helpful**: * [Vapi Enterprise]() * [Create Phone Call]() * [Billing Examples]() * [Get Call]() -----------------------------

### Answer If you anticipate having more than 10 concurrent calls and wish to operate on a pay-as-you-go basis, it's important to know that Vapi by default allows up to 10 concurrent calls on the standard setup. However, it is indeed possible to accommodate more than 10 concurrent calls. For exceeding this limit, it would require reaching out to Vapi's support to request an increase in your concurrent call limit [(1)]() [(2)]() . As for the 11th call and beyond, without an adjustment to your account to allow for more concurrent calls, additional calls might not be initiated until one of the existing calls is completed. The documentation does not explicitly state that calls would be rejected or queued, but managing the concurrency limit is a fundamental aspect, so ensuring you have the capacity for your needs is crucial. For scenarios where you need to handle more than 20+ concurrent calls, reaching out to Vapi's support to discuss your specific requirements and how they can adjust your concurrency limit would be the best course of action. This proactive approach will help in planning for your call volume without facing interruptions or the need for call queuing mechanisms due to hitting the default concurrency limits.

Got it. Tagging @User for additional help.