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Voice Agents · Head-to-head

Retell AI vs xiaozhi-esp32-server

Retell AI and xiaozhi-esp32-server are both voice agents. Retell AI is Build production-ready AI phone agents with ultra-low latency, while xiaozhi-esp32-server is 本项目为xiaozhi-esp32提供后端服务，帮助您快速搭建ESP32设备控制服务器。Backend service for xiaozhi-esp32, helps you quickly build an ESP32 device control server. Here's an independent, side-by-side look at how they compare — and which fits.

Retell AI

Platform· Paid product

Build production-ready AI phone agents with ultra-low latency.

Visit Retell AI →
xiaozhi-esp32-server

Infrastructure· Open source

本项目为xiaozhi-esp32提供后端服务，帮助您快速搭建ESP32设备控制服务器。Backend service for xiaozhi-esp32, helps you quickly build an ESP32 device control server.

Visit xiaozhi-esp32-server →

Side by side

SpecRetell AIxiaozhi-esp32-server
TypePlatformInfrastructure
ModelCommercialOpen source
PricingPaid productOpen source
GitHub stars—9,959
Language—JavaScript
License—MIT
Last activity—Jul 2026

Choose Retell AI if

Production AI phone agents with low latency and strong call-handling primitives..

Choose xiaozhi-esp32-server if

you want an open-source, self-hostable option you control.

About Retell AI

Build production-ready AI phone agents with ultra-low latency.

Full Retell AI profile →

About xiaozhi-esp32-server

本项目为xiaozhi-esp32提供后端服务，帮助您快速搭建ESP32设备控制服务器。Backend service for xiaozhi-esp32, helps you quickly build an ESP32 device control server.

Full xiaozhi-esp32-server profile →
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