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AMDSure vs Plivo Machine Detection
Plivo lists machine detection at $0.0000 per minute on its regional voice pricing pages: no separate fee on top of the call. It only runs on calls placed through Plivo.
| AMDSure | Plivo | |
|---|---|---|
| The 3% abandon rule | Shadow mode measures people wrongly sent to voicemail on your own calls, beside your built-in AMD(), with the sample size: your detector's share of the 3% abandon rate, before you switch. People are decided first, 2.55 s on average. | No published error rates. Only on Plivo calls. |
| How it decides | A compiled agent on your Asterisk box measures the call (a real voice detector, tones, a learned acoustic model, the sound of the pickup itself); AMDSure's server applies the rules and signs the verdict. | Plivo's engine on its own media. |
| Where the audio goes | Stays on your server. The agent sends numbers (speech probabilities, tone events, model scores), never audio, unless you switch learning on. | The call is already on Plivo. |
| Time to a verdict | Median 4.6 s to a verdict on live calls from the pickup, 2.3 s on recordings that start mid-greeting; short greetings decide at about 2 s, beeps and known greetings sooner. | Not published. |
| Price | Free: 50,000 verdicts a month, two servers, no card. Starter $69 a month for 500,000 then $0.0002; Growth $269 for 5,000,000 then $0.00012; Scale $899 for 25,000,000 then $0.00008. | Listed at $0.0000 per minute as an add-on on Plivo's regional pricing pages (May 2026 rates); the call itself is billed per minute. |
| What it reports | Person, voicemail, call screener, unsure, each with a reason, a confidence and the time to the verdict. And what answered, by name: Verizon, AT&T and other carriers' default greetings, number read-outs, iPhone, Samsung and Google call screening, a disconnected number (the intercept tones), fax, busy, dead air, a false answer. Stamped on the call as AMDSURE_KIND for the dialer. | Human or machine, with an optional wait for the beep. |
| Works on | Asterisk 18 to 22 and everything built on it: VICIdial, ViciBox, FreePBX, Issabel, GoAutoDial, custom dialers. FreeSWITCH in development. | Plivo voice API only. |
| Proof before you switch | Shadow mode runs beside your built-in AMD() on every call and stamps its verdict on the call; the dashboard shows people wrongly sent to voicemail and voicemails caught, against AMD(), before you switch. | None published. |
| When it fails | Open, to your own AMD(). A brain outage costs seconds, never a call. | Not published. |
| Your audio and training | Your call audio is used for training only with the learning checkbox on, which you can turn off at any time; phone numbers are never seen. | Per Plivo's terms. |
Where Plivo is good
Built into Plivo's voice API. Listed at no extra charge.
- No add-on fee if you are already on Plivo.
Where AMDSure differs
- AMDSure works on your own Asterisk dialer and trunks; Plivo's only on Plivo calls.
- AMDSure publishes its error rates on your own calls and names screeners and false answers.
Sources
Facts about Plivo come from its own documentation and pricing pages on the dates noted; tell us at [email protected] if something has changed and we will fix it. Other comparisons: Stock AMD(), FreeSWITCH AMD, AMDY, Twilio AMD, Telnyx AMD, SignalWire AMD, Vonage, VM Hunter.
See it on your own traffic.
A 20 minute call. We show the console with live numbers, then set up shadow mode on your dialer so you can judge for yourself.
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