### Answer Based on the available sources, I don't have information about "ChatGPT 5 nano." However, I can provide you with the LLM pricing information that is documented. For Call Agents: [(1) ]() - GPT 5: $0.04/minute (Fast Tier: $0.08/minute) - GPT 5 mini: $0.012/minute (Fast Tier: $0.024/minute) - GPT 5 nano: $0.003/minute (Fast Tier: $0.006/minute) - GPT 4.1: $0.045/minute (Fast Tier: $0.0675/minute) - GPT 4.1 mini: $0.016/minute (Fast Tier: $0.024/minute) - GPT 4.1 nano: $0.004/minute (Fast Tier: $0.006/minute) - GPT 4o: $0.05/minute (Fast Tier: $0.075/minute) - GPT 4o mini: $0.006/minute For Chat Agents: - GPT 5: $0.013/AI msg - GPT 5 mini: $0.004/AI msg - GPT 5 nano: $0.001/AI msg - GPT 4.1: $0.015/AI msg - GPT 4.1 mini: $0.006/AI msg - GPT 4.1 nano: $0.002/AI msg - GPT 4o: $0.017/AI msg - GPT 4o mini: $0.002/AI msg Note: Prompts exceeding 3500 tokens will incur a surcharge. For the complete pricing calculator and more details, visit the [pricing page]() .

​ To learn more, see the sources I considered: [[1] AI Phone Agent Pricing | Retell AI](https://www.retellai.com/pricing) ​

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