# VM Hunter

> AI answering machine detection (AMD) for outbound dialers. VM Hunter listens to the first two seconds after a call is answered and tells the dialer whether it reached a live person, voicemail, an IVR, a disconnected number or a call-screening prompt. It decides from what is said (a transcript of the opening seconds) plus tone and silence analysis, and returns a HUMAN or MACHINE verdict with a reason about two seconds after answer.

Company: PILOTLAB LLC dba VM Hunter, Las Vegas, Nevada, United States. Support: support@vmhunter.com.

## What it does
- Verdict (AMDSTATUS) of HUMAN or MACHINE, with a reason (AMDCAUSE): voicemail wording, beep, static, SIT tone (disconnected number), initial silence, no audio, or CALLGUARD_PHRASE for call screening (iPhone iOS 26 Ask Reason for Calling, Google Call Screen, call blockers).
- Typical time to verdict: about 2 seconds after answer; listens up to 3 seconds if the callee is still talking.
- Every analysed call is logged with its transcript, reason and a short audio sample; customers can delete recordings or turn storage off.
- Integrations: VICIdial and Asterisk (EAGI client), FreeSWITCH (Lua script, mod_audio_fork or mod_audio_stream), Twilio Media Streams (bridge, beta), and a WebSocket API for any other dialer or voice AI agent. Clients are open source (MIT) at https://github.com/vmhunterhq.
- Audio format: 8 kHz 16-bit mono PCM over a WebSocket; one connection per call.

## Pricing
- Free plan: 5,000 calls a month, no card.
- Paid plans from $100 a month (Nano, 100K calls). Starter: 3M calls a month, 50 calls per second, 550 channels. Professional: 5M calls, 100 CPS, 1,200 channels. Enterprise by contact.
- Billing is per call analysed. Failed detections are not billed.

## Pages
- Home: https://vmhunter.com/
- AI answering machine detection (how it decides): https://vmhunter.com/ai-answering-machine-detection
- Pricing: https://vmhunter.com/pricing
- Documentation: https://vmhunter.com/docs
- VICIdial / Asterisk integration guide: https://vmhunter.com/docs/vicidial
- FreeSWITCH integration guide: https://vmhunter.com/docs/freeswitch
- Twilio integration guide: https://vmhunter.com/docs/twilio
- WebSocket API reference: https://vmhunter.com/docs/api
- VICIdial AMD plugin: https://vmhunter.com/integrations/vicidial
- Asterisk AMD alternative: https://vmhunter.com/integrations/asterisk
- FreeSWITCH AMD: https://vmhunter.com/integrations/freeswitch
- Call screening (iOS 26, Google): https://vmhunter.com/call-screening
- Comparisons with other AMD options: https://vmhunter.com/vs
- Twilio AMD compared: https://vmhunter.com/compare/twilio-amd
- Telnyx AMD compared: https://vmhunter.com/compare/telnyx-amd
- Plivo machine detection compared: https://vmhunter.com/compare/plivo-amd
- Khomp compared (VICIdial): https://vmhunter.com/compare/khomp
- Acoustic vs speech-based AMD, tested on 4,000 agent-labelled calls: https://vmhunter.com/blog/acoustic-amd-vs-speech-amd-4000-call-test
- Voicemail detection API: https://vmhunter.com/voicemail-detection-api
- Voicemail detection for AI voice agents: https://vmhunter.com/voicemail-detection-for-ai-voice-agents
- Blog: https://vmhunter.com/blog
- Privacy policy: https://vmhunter.com/privacy
- GitHub: https://github.com/vmhunterhq

## Limits worth knowing
- Tuned for English greetings today; other languages are planned.
- The audio endpoint is plain ws:// on port 2701.
- The Twilio bridge has not yet been tested on a live Twilio call.