### Answer Yes, when you buy a phone number through Retell, there are additional charges beyond the AI/model costs. Phone Number Costs: - Local numbers: $2/month [(1) ]() - Toll-free numbers: $2/month [(2) ]() Per-Minute Telephony Costs: Your total cost per minute includes telephony charges on top of the Conversation Voice Engine and LLM costs. The pricing formula is: Conversation Voice Engine + LLM + Telephony = Total Cost For Retell Twilio/Telnyx telephony, there are carrier per-minute charges that get added to your AI runtime costs. [(3) ]() Example Cost Breakdown: - Conversation Voice Engine (with Elevenlabs/Cartesia voices) : $0.07/minute [(2) ]() - LLM cost varies by model (e.g., GPT 4o mini: $0.006/minute) - Telephony cost is added on top Note that calling international numbers (like Indian numbers) can significantly increase the telephony portion of your costs. [(3) ]() You can use the pricing calculator on the Retell pricing page to estimate your total cost based on your specific LLM, voice engine, and telephony choices. [(2) ]()

​ To learn more, see the sources I considered: [[1] Discord message from @a_retell_fanboyx334_43483 on 2026-01-08](https://discord.com/channels/1186424376300679209/1186462578310910112/1458801650381619303) [[2] AI Phone Agent Pricing | Retell AI](https://www.retellai.com/pricing) [[3] Discord message from @onit_tindwani on 2025-11-24](https://discord.com/channels/1186424376300679209/1186462578310910112/1442483704072110101) ​

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

### Answer The available sources don't specify the exact per-minute telephony costs for Retell-purchased numbers. The documentation mentions that telephony is "integrated with Twilio, Vonage, SIP, or verified numbers" and that the fees "bundle in the usage fee from each of our Providers on a per use basis." [(1) ]() [(2) ]() For general reference, the sources indicate SIP trunking typically ranges from $0.01–$0.05 per minute across the industry. [(1) ]() To get the specific per-minute telephony rates for Retell-purchased numbers, I'd recommend: - Using the pricing calculator on the [Retell pricing page]() - Reaching out via [Contact Sales]() Would you like me to try to answer this more generally based on my knowledge?

​ To learn more, see the sources I considered: [[1] ](https://www.retellai.com/resources/inbound-vs-outbound-callers-pricing-comparison-2025) [[2] ](https://www.retellai.com/resources/voice-ai-platform-pricing-comparison-2025) ​

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