### Answer Concurrency limits are based on all agents combined at the account/org level, not per individual agent. [(1) ]() Concurrency refers to the number of simultaneous active voice calls that can be handled by your system at any given moment. Each agent within your plan is capable of handling an unlimited number of calls, provided that the total concurrency remains within your designated quota. So yes—if you have 400 agents and each is handling 1 call simultaneously, that counts as 400 concurrent calls, which would exceed the default Pay-As-You-Go quota of 20 concurrent calls. Your options to handle this: - Upgrade your plan via the Billing page to increase your concurrency limit - Enable Concurrency Burst which allows you to temporarily exceed your standard limit with a $0.10/min surcharge on burst calls - Your burst limit would be calculated as the lower of: 3× your normal limit OR your normal limit + 300 You can check your current concurrency usage in the dashboard or via the API using the Get Concurrency endpoint. [(1) ]() [(2) ]()

​ To learn more, see the sources I considered: [[1] Understand concurrency & limits](https://docs.retellai.com/deploy/concurrency) [[2] Get Concurrency](https://docs.retellai.com/api-references/get-concurrency) ​

Feel free to tag @AI Evy with additional questions. I also appreciate feedback, it helps me improve.

### Answer To increase your concurrency, you have a few options: 1. Purchase Additional Concurrency You can buy extra concurrency at $8 per additional concurrent call per month. [(1) ]() 2. Enable Concurrency Burst Mode When enabled, this allows your org to exceed the normal concurrency limit with a surcharge. Your burst limit is calculated as the lower of: 3× your normal limit OR your normal limit + 300. [(2) ]() 3. Enterprise Plan For companies with large volumes (over $3k/month) , custom call concurrency options are available along with volume-based discounts and premium support. [(3) ]() To contact sales about the Enterprise Plan, visit: [Enterprise Plan]() You can manage your billing and payment methods through the Billing tab in your dashboard, which uses Stripe for secure payment processing. [(4) ]() To check your current concurrency status programmatically, you can use the Get Concurrency API endpoint:

javascript
import Retell from 'retell-sdk';
const client = new Retell({
  apiKey: 'YOUR_RETELL_API_KEY',
}) ;
const concurrency = await client.concurrency.retrieve() ;
console.log(concurrency.base_concurrency) ;

[(2) ]()

​ To learn more, see the sources I considered: [[1] Personalization with Airtable]() [[2] Get Concurrency](https://docs.retellai.com/api-references/get-concurrency) [[3] Inside Retell AI | The Conversational AI Platform Behind Scalable AI Phone Systems | Retell AI](https://www.retellai.com/blog/inside-retell-ai-conversational-ai-phone-system) [[4] Billing Overview](https://docs.retellai.com/accounts/billing) ​

Feel free to tag @AI Evy with additional questions. I also appreciate feedback, it helps me improve.

### Answer I understand that's frustrating. For enterprise and sales inquiries, you can try reaching out again through the official contact form at [) . [(1) ]() You can also try these additional channels: - **Discord**: Ask questions here or tag a Retell team member directly (like @Evy or @Omar_Ashraf who are active in the community) [(2) ]() [(3) ]() - **GitHub**: [) [(3) ]() Given your scale (400+ agents) , your use case definitely qualifies for enterprise-level discussions. I'd recommend posting your inquiry in this Discord server with details about your concurrency needs—Retell team members are active here and may be able to escalate your request.

​ To learn more, see the sources I considered: [[1] Enterprise Conversational AI Platform](https://www.retellai.com/enterprise-conversational-ai-platform) [[2] Urgent GDPR Compliance Inquiry for EU-Based Voice Agent Deployments](https://community.retellai.com/t/urgent-gdpr-compliance-inquiry-for-eu-based-voice-agent-deployments/190) [[3] Confused About Billing](https://community.retellai.com/t/confused-about-billing/260) ​

Feel free to tag @AI Evy with additional questions. I also appreciate feedback, it helps me improve.

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