right know i have pay as you go plan but i need call like 20 people al the same time is posible change it without change the subcription plan ? https://cdn.discordapp.com/attachments/1380195680735199375/1380195680961957938/image.png?ex=6842fee5&is=6841ad65&hm=5bb95bf1975ac7df7900e2c9d9ef060ea4f65c619442f48f9ee2f273410c63ce&

Yes, you can increase your call concurrency limit without changing your subscription plan. According to the documentation, you can purchase additional concurrency as an add-on through the billing page, even on pay-as-you-go or credit-based billing plans. This allows you to handle more concurrent calls (e.g., 20 at once) without switching plans. However, the documentation does not specify if there are any unique restrictions for pay-as-you-go users or HIPAA-enabled accounts. Could you please confirm if you are using the credit-based billing system, or do you see an option to add concurrency add-ons in your billing dashboard? Sources: - [Vapi Changelog October 10, 2024](https://docs.vapi.ai/changelog/2024/10/10) - [Vapi Changelog November 11, 2024](https://docs.vapi.ai/changelog/2024/11/11) - [Vapi Changelog January 20, 2025](https://docs.vapi.ai/changelog/2025/1/20)

Yes to increase your concurrency limit go to the billing section of the dashboard, input your payment method, and once it is saved you can purchase more lines of concurrency without changing your subscription plan.