Is Pipecat or xiaozhi-esp32-server free?

Pipecat is free to run and self-host; xiaozhi-esp32-server is free to run and self-host. Both are free to self-host — you only pay for the infrastructure and any model or API usage.

Which is more popular, Pipecat or xiaozhi-esp32-server?

By GitHub stars — a proxy for open-source adoption — Pipecat is ahead (16k vs 11k). Stars measure attention, not necessarily the better fit for you.

Voice Agents · Head-to-head

Pipecat vs xiaozhi-esp32-server

Pipecat and xiaozhi-esp32-server are both voice agents. Pipecat is Compose voice and multimodal agents with Python processing pipelines, while xiaozhi-esp32-server is 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.

Pipecat

Framework· Open source

Compose voice and multimodal agents with Python processing pipelines.

Visit Pipecat →

xiaozhi-esp32-server

Infrastructure· Open source

Backend service for xiaozhi-esp32 -- helps you quickly build an ESP32 device control server.

Visit xiaozhi-esp32-server →

Bottom line

Pipecat and xiaozhi-esp32-server are both open-source voice agents you can self-host for free. Pipecat is written primarily in Python; xiaozhi-esp32-server in JavaScript. Neither is universally better — pick by fit.

Building one yourself? Choose and evaluate a voice agent stack →

Side by side

Spec	Pipecat	xiaozhi-esp32-server
Type	Framework	Infrastructure
Model	Open source	Open source
Pricing	Open source	Open source
GitHub stars	15,510	10,568
Language	Python	JavaScript
License	BSD-2-Clause	MIT
Last activity	Sep 2026	Sep 2026

Key differences

Pipecat is written primarily in Python; xiaozhi-esp32-server in JavaScript.
Licensing differs: Pipecat is BSD-2-Clause, xiaozhi-esp32-server is MIT.

Choose Pipecat if

Python developers who want to choose the services and processing stages in a custom voice or multimodal application.

Choose xiaozhi-esp32-server if

your team works primarily in JavaScript.

About Pipecat

Pipecat is an open-source Python framework that connects transport, speech recognition, language models and speech synthesis through processing pipelines. It supports voice and multimodal applications, with self-hosted and managed deployment options. The framework license does not make model APIs, telephony or hosting free.

Full Pipecat profile →

About xiaozhi-esp32-server

Backend service for xiaozhi-esp32 -- helps you quickly build an ESP32 device control server.

Full xiaozhi-esp32-server profile →

Frequently asked

What's the main difference between Pipecat and xiaozhi-esp32-server?: Pipecat is written primarily in Python; xiaozhi-esp32-server in JavaScript.
Is Pipecat or xiaozhi-esp32-server better?: Neither is universally better. Pipecat is the stronger fit for Python developers who want to choose the services and processing stages in a custom voice or multimodal application; xiaozhi-esp32-server for teams working primarily in JavaScript. Use the side-by-side specs to decide by your own constraints.
Is Pipecat or xiaozhi-esp32-server free?: Pipecat is free to run and self-host; xiaozhi-esp32-server is free to run and self-host. Both are free to self-host — you only pay for the infrastructure and any model or API usage.
Which is more popular, Pipecat or xiaozhi-esp32-server?: By GitHub stars — a proxy for open-source adoption — Pipecat is ahead (16k vs 11k). Stars measure attention, not necessarily the better fit for you.

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