> ## Documentation Index
> Fetch the complete documentation index at: https://prices.voicegateway.dev/llms.txt
> Use this file to discover all available pages before exploring further.

# Voice activity detection pricing

> 2 VAD model(s) from 1 provider(s), cheapest first.

2 VAD model(s) from 1 provider(s). Priced from `input_audio_kseconds`, US dollars per 1,000 seconds of processed audio. Shown per minute. Pick a vendor in the sidebar to see that vendor alone.

Voice activity detection is usually free. Silero VAD, WebRTC VAD, and the LiveKit turn detector all run locally and cost CPU rather than dollars per minute, so they carry no rows here. Only hosted or licensed VAD with a published rate appears below.

| Provider                        | Model                      | Name                      | \$ / min |                                          Source | Last verified |
| ------------------------------- | -------------------------- | ------------------------- | -------: | ----------------------------------------------: | ------------: |
| [ai-coustics](/vad/ai-coustics) | `quail-vad-2.0-xxs-16khz`  | Quail VAD 2.0             | \$0.0015 | <Badge color="green" size="sm">verified</Badge> |    2026-07-31 |
| [ai-coustics](/vad/ai-coustics) | `quail-vf-vad-2.0-s-16khz` | Quail Voice Focus VAD 2.0 | \$0.0015 | <Badge color="green" size="sm">verified</Badge> |    2026-07-31 |

What `verified`, `imported`, and `seed` mean is on [How Fresh?](/how-fresh).