What's the main difference between Retell AI and ten-vad?

Retell AI is a commercial product; ten-vad is open-source and self-hostable.

Is Retell AI or ten-vad better?

Neither is universally better. Retell AI is the stronger fit for Production AI phone agents with low latency and strong call-handling primitives; ten-vad for an open-source, self-hostable option you control. Use the side-by-side specs to decide by your own constraints.

Is Retell AI or ten-vad free?

Retell AI is a paid product; ten-vad is free to run and self-host.

Which is more popular, Retell AI or ten-vad?

We rank open-source projects by GitHub adoption, but at least one of these is a commercial product and stars don't measure commercial adoption — so compare them on capabilities and pricing instead.

Voice Agents · Head-to-head

Retell AI vs ten-vad

Retell AI and ten-vad are both voice agents. Retell AI is Build production-ready AI phone agents with ultra-low latency, while ten-vad is voice Activity Detector (VAD): low-latency, high-performance and lightweight. 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 →

ten-vad

SDK / library· Open source

Voice Activity Detector (VAD): low-latency, high-performance and lightweight

Visit ten-vad →

Bottom line

Retell AI and ten-vad take different routes to the same job: one is a commercial product, the other open-source and self-hostable. Choose based on whether you want a managed experience or full control.

Side by side

Spec	Retell AI	ten-vad
Type	Platform	SDK / library
Model	Commercial	Open source
Pricing	Paid product	Open source
GitHub stars	—	2,185
Language	—	C
Last activity	—	Feb 2026

Key differences

Retell AI is a commercial product; ten-vad is open-source and self-hostable.
Pricing model differs — Retell AI is paid product, ten-vad is open source.

Choose Retell AI if

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

Choose ten-vad 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 ten-vad

Voice Activity Detector (VAD): low-latency, high-performance and lightweight

Full ten-vad profile →

Frequently asked

What's the main difference between Retell AI and ten-vad?: Retell AI is a commercial product; ten-vad is open-source and self-hostable.
Is Retell AI or ten-vad better?: Neither is universally better. Retell AI is the stronger fit for Production AI phone agents with low latency and strong call-handling primitives; ten-vad for an open-source, self-hostable option you control. Use the side-by-side specs to decide by your own constraints.
Is Retell AI or ten-vad free?: Retell AI is a paid product; ten-vad is free to run and self-host.
Which is more popular, Retell AI or ten-vad?: We rank open-source projects by GitHub adoption, but at least one of these is a commercial product and stars don't measure commercial adoption — so compare them on capabilities and pricing instead.

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