# Answering Machine Detection Pricing: What AMD Really Costs

> Compare AMD pricing models across API, bundled, and self-hosted options. Plura AI bundles AMD so your per-call costs stay predictable at scale.

**Published:** 2026-07-31 | **Updated:** 2026-11-06 | **Author:** plurasync
**URL:** https://www.plura.ai/articles/voicemail-detection-pricing
**Type:** post

**Categories:** AI Voice Agents

![Answering Machine Detection Pricing: What AMD Really Costs](https://plura.sites.aigrowthagent.co/wp-content/uploads/sites/75/2026/07/1785236472778-ad2d21018cf7-1024x572.webp)

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## Content

*Written by: Matt Beucler, CEO, Plura AI | Last updated: September 29, 2026*

## Key Takeaways

- AMD pricing on major CPaaS APIs ranges from $0.0020 to $0.0075 per completed call, with Twilio at the high end and Telnyx Standard at the low end.
- Bundled dialers and AI voice platforms fold voicemail detection into per-minute or subscription fees instead of metering it separately.
- At 250,000 answered calls per month, metered AMD fees alone can exceed $1,800 on Twilio before accounting for false positives and retries.3
- Plura AI eliminates per-call AMD charges by bundling voicemail detection into its flat platform subscription.
- Plura AI fits high-volume outbound operations that need voicemail detection, branded caller ID, and compliance-supporting features without separate metering.

[Talk with Plura AI in a live demo.](https://www.plura.ai/plura-webchat?utm_term=voicemail-detection-pricing&utm_campaign=ai_growth_agent)

## The Per-Call Rate Range and the API-vs-Bundled Split

Three major CPaaS providers publish AMD rates as standalone per-call or per-invocation line items:4

- Twilio AMD: $0.0075 per completed call
- [SignalWire AMD](https://signalwire.com/pricing/rates): $0.00600 per call (United States and Canada)
- Telnyx Standard AMD: $0.0020 per invocation (per Telnyx’s December 2022 release note)
- [Telnyx Premium AMD: $0.0065 per invocation](https://amdy.io/blog/best-amd-solutions-vicidial-asterisk)

These are API and CPaaS rates billed per completed call or invocation, stacked on top of standard voice-minute charges. Twilio’s US Voice pricing page confirms that AMD at $0.0075 per call is a separate charge from the $0.0140 per minute outbound telephony rate. Both meters run on the same call.

Bundled dialers and AI voice platforms follow a different pricing pattern. Platforms such as Vapi, Retell, Bland, ElevenLabs, CloudTalk, and CallTools fold AMD into per-minute or subscription fees instead of metering it as a separate line item.4 CloudTalk’s AI Voice Agent add-on, for example, starts at $99 per 200 minutes per month and includes AI-driven voicemail detection inside that usage block.

Plura AI’s [AI Predictive Dialer](https://plura.ai/ai-predictive-dialer?utm_term=voicemail-detection-pricing&utm_campaign=ai_growth_agent) bundles [voicemail detection](https://plura.ai/ai-predictive-dialer?utm_term=voicemail-detection-pricing&utm_campaign=ai_growth_agent) into its platform subscription instead of charging per AMD invocation. For provider detail and accuracy comparisons, see [Voicemail Detection Providers Compared: Accuracy and AI (2026)](https://www.plura.ai/articles/best-voicemail-detection-providers/?utm_term=voicemail-detection-pricing&utm_campaign=ai_growth_agent) and [Voicemail Detection APIs: Top Options Compared](https://www.plura.ai/articles/best-voicemail-detection-apis/?utm_term=voicemail-detection-pricing&utm_campaign=ai_growth_agent). This article focuses on the cost math.

![Plura Predictive Dialer dashboard displaying AI-powered outbound call pacing, transfer analysis, and dialing performance insights.](https://cdn.aigrowthmarketer.co/1779338793506-2d33c5dff8e8.png)**Plura Predictive Dialer automates outbound calling with AI-powered pacing, transfer optimization, and real-time performance analytics.**

## Monthly AMD Spend at 10K, 50K, and 250K Answered Calls

The table below shows how per-call AMD rates compound at volume: at 250,000 answered calls per month, Twilio’s AMD fees alone reach roughly $1,875, while Telnyx Standard incurs no separate AMD charge.3 All figures are AMD detection fees only and exclude voice-minute charges, number rental, and platform fees.

| Provider | AMD Cost Per Call | 10,000 Calls/Mo | 50,000 Calls/Mo | 250,000 Calls/Mo |
| --- | --- | --- | --- | --- |
| Twilio | $0.0075 | ~$75 | ~$375 | ~$1,875 |
| [SignalWire](https://signalwire.com/pricing/rates) | $0.0060 | ~$60 | ~$300 | ~$1,500 |
| Telnyx Standard | Free with Call Control | Call cost only | Call cost only | Call cost only |
| [Telnyx Premium](https://amdy.io/blog/best-amd-solutions-vicidial-asterisk) | $0.0065 | ~$65 | ~$325 | ~$1,625 |

At these volumes, Plura’s flat platform subscription replaces metered AMD spend entirely. AMD appears as part of the platform fee instead of a line item that scales with every answered call. See [plans and rates](https://plura.ai/pricing?utm_term=voicemail-detection-pricing&utm_campaign=ai_growth_agent) for current tier details.

[See how bundled voicemail detection works in a live demo.](https://www.plura.ai/plura-webchat?utm_term=voicemail-detection-pricing&utm_campaign=ai_growth_agent)

## Billing Mechanics That Distort The Headline Rate

AMD is typically billed on answered calls when the feature is enabled, which means the headline per-call rate is only the starting point. The effective cost per useful detection depends on answer rate, false-positive rate, and retry behavior.

**AMD bills on answered calls, not dials.** Twilio’s AMD documentation describes the feature as an outbound-call parameter (MachineDetection) applied to calls, and Twilio’s pricing evidence indicates the $0.0075 fee is metered per answered or completed call. [A completed call, per Twilio’s Call resource documentation, can occur when a call is answered by a person, an IVR phone tree menu, or a voicemail](https://zian.ai/what-unanswered-ai-calls-cost-you). Both the telephony leg and the $0.0075 AMD fee can be incurred on voicemail pickups.

**Retry waste.** Every retry that reaches a machine creates another billed invocation. On a campaign with a low first-attempt connect rate, retries compound the AMD line item before a single live conversation occurs.

**False-positive cost.** [Traditional beep-based AMD typically runs a 5 to 15 percent false-positive rate](https://dialerbee.com/blog/what-is-answering-machine-detection), which means live humans are incorrectly classified as answering machines and the call is dropped. Each false positive generates a billed AMD invocation with no conversation to show for it, and the dropped live connection is a lost opportunity.

[At a 20 percent false-positive rate on 10,000 answered calls, 2,000 of those AMD charges produce no useful detection](https://dialerbee.com/blog/what-is-answering-machine-detection). On Twilio at $0.0075 per call, that is $15 of the $75 monthly AMD spend wasted on misdetections, before accounting for the agent time burned on false negatives or the revenue lost on dropped live connections. At 250,000 calls, the same false-positive rate wastes $375 in AMD fees alone.

[Across approximately 2.3 billion answered calls on the AMDY network in a 30-day window](https://amdy.io/blog/voicemail-detection-vs-amd), roughly 14 percent of answers were carrier false answers, where the carrier signaled a connection but nothing picked up. Those calls still trigger AMD billing on per-invocation models.

## Twilio AMD Pricing and Scale Impact

Twilio charges $0.0075 per call for answering machine detection on its US Voice pricing page (pricing current as of August 2026). That fee stacks on top of Twilio’s standard outbound voice rate of $0.0140 per minute instead of replacing it. A single outbound call with AMD enabled therefore incurs both the $0.0075 AMD charge and the per-minute telephony charge for the duration of the call.

At one million answered calls per month, [Twilio’s AMD fees alone reach approximately $7,500](https://amdy.io/blog/best-amd-solutions-vicidial-asterisk), on top of per-minute voice charges. The line doubles every time volume doubles, with no automatic volume discount applied to the AMD rate. Twilio offers committed-use discounts for enterprise customers, but these apply to usage-based services and do not reduce the $0.0075 per-call AMD rate per the published pricing page.

## Lower-Cost AMD Alternatives to Twilio

Lower-cost metered options exist for teams that want to stay on a per-call model. As of September 2026, among the major CPaaS providers compared, [Telnyx’s published AMD rate of $0.0020 per completed call is the lowest](https://zian.ai/twilio-vs-telnyx-ai-voice-agents/), undercutting Twilio’s published US AMD rate of $0.0075 per call. [SignalWire AMD at $0.00600 per call](https://signalwire.com/pricing/rates) sits between Telnyx Standard and Twilio on the rate card.

The bundled route converts variable per-call AMD spend into a predictable subscription. Plura’s [AI Predictive Dialer](https://plura.ai/ai-predictive-dialer?utm_term=voicemail-detection-pricing&utm_campaign=ai_growth_agent) includes [voicemail detection](https://plura.ai/ai-predictive-dialer?utm_term=voicemail-detection-pricing&utm_campaign=ai_growth_agent), branded caller ID issued through Plura’s own FCC-licensed carrier, and real-time DNC scrubbing inside the platform. None of these appear as separate metered add-ons. At high volume, the flat subscription removes the compounding effect of per-call AMD fees. Compare [plans and rates](https://plura.ai/pricing?utm_term=voicemail-detection-pricing&utm_campaign=ai_growth_agent) to see where the crossover point falls for your volume.

![Plura Predictive Dialer dashboard showing AI-powered outbound dialing, intelligent call routing, and performance analytics.](https://cdn.aigrowthmarketer.co/1779339309900-eefcb08741d1.png)**Plura Predictive Dialer uses AI-powered outbound dialing, intelligent routing, and real-time analytics to maximize call performance.**

## Decision Framework: API-Per-Call vs. Bundled Subscription

The API-per-call model and the bundled subscription model fit different volume profiles. The threshold rule stays straightforward.

**Metered API AMD fits** low, intermittent volume where AMD is the only feature needed and call counts are unpredictable month to month. Telnyx Standard Answering Machine Detection is free of charge with the Telnyx Programmable Voice API (Call Control), so at 10,000 calls per month you only pay the call cost, starting at $0.002 per minute. If that is the only feature in use, a metered API keeps fixed costs near zero.

**A bundled platform subscription fits** once AMD, dialing, caller ID, and compliance are all required, because the per-call line items compound. At 50,000 answered calls per month, Twilio AMD alone costs $375. Branded calling adds $0.12 per call. Together, AMD and caller ID reach $6,375 per month before a single voice minute is billed. At 250,000 calls, those two line items alone exceed $18,000 per month.

Plura is a strong fit as a bundled solution for high-volume outbound operations running thousands of calls per month. Plura’s [AI Predictive Dialer](https://plura.ai/ai-predictive-dialer?utm_term=voicemail-detection-pricing&utm_campaign=ai_growth_agent) bundles four capabilities that competitors often meter separately: voicemail detection, branded caller ID issued at the carrier level through Plura’s FCC-licensed carrier, STIR/SHAKEN authentication on every outbound call, and real-time DNC scrubbing and TCPA-litigator screening enforced inside the platform before dial.1,2 None of those capabilities are separate metered add-ons. See [pricing](https://plura.ai/pricing?utm_term=voicemail-detection-pricing&utm_campaign=ai_growth_agent) for current plan details.

![Screenshot of Plura’s fully compliant AI communications platform showing business registration and phone number provisioning workflows for AI Voice, SMS, RCS, and Webchat communication automation.](https://cdn.aigrowthmarketer.co/1779337911454-8c3a9645d906.png)**Plura’s FCC-licensed AI communications platform simplifies compliant business registration and phone number provisioning for AI Voice, SMS, RCS, and Webchat workflows.**

[Review your outbound costs with Plura in a live session.](https://www.plura.ai/plura-webchat?utm_term=voicemail-detection-pricing&utm_campaign=ai_growth_agent)

## The Open-Source and Self-Hosted Route

Self-hosting AMD removes the per-call fee but adds fixed infrastructure and labor costs that often exceed metered pricing below a certain volume. The hidden costs include compute infrastructure, telephony minutes for the detection layer, engineering time to build and maintain the integration, and ongoing tuning as carrier behavior changes.

[Stock Asterisk and ViciDial timing-based AMD lands around 70 to 85 percent accuracy in production](https://amdy.io/blog/best-amd-solutions-vicidial-asterisk), which functions as a structural ceiling rather than a configuration problem. That false-positive rate translates directly into dropped live connections and wasted agent time. Closing that accuracy gap requires ongoing engineering: maintaining the system across carrier changes and building the reporting layer. At volumes below several million calls per month, that cost typically exceeds the per-call fees it replaces.

For operations already running Asterisk or FreeSWITCH at very high volume, purpose-built AMD services offer a middle path. [AMDY.IO publishes per-detection pricing of $0.00010 to $0.00025](https://amdy.io/blog/best-amd-solutions-vicidial-asterisk), with [plans starting at $79 per month for 500,000 included detections](https://amdy.io/blog/best-amd-solutions-vicidial-asterisk). That model is telco-agnostic and does not require re-platforming existing trunks.

## How AI Voice Platforms Bundle AMD

AI voice platforms such as Vapi, Retell, Bland, and ElevenLabs bundle AMD into per-minute fees, so buyers comparing an API per-call rate to a platform per-minute rate are not comparing like for like.

To normalize the comparison, convert the platform’s per-minute rate to an effective per-call AMD cost using average call duration. [If a platform charges $0.07 per minute and the average answered call runs 1.5 minutes before AMD fires, the effective AMD cost embedded in that call is $0.105](https://thunderphone.com/compare/voice-ai-pricing), roughly 14 times Twilio’s standalone $0.0075 rate. The platform rate covers more than AMD, but the AMD component is priced into the per-minute fee and scales with call duration rather than with detection events.

[Kommunicate’s August 2026 voice AI pricing research](https://kommunicate.io/blog/ai-voice-agent-pricing) found that most production deployments land between $0.12 and $0.25 per minute all-in once every component is billed, and that [operational costs not shown on pricing pages typically add 15 to 30 percent to a naive estimate](https://kommunicate.io/blog/ai-voice-agent-pricing). A platform advertising $0.07 per minute may land closer to $0.14 to $0.20 per minute once the full stack is included.

## Conclusion: Run Your Own Numbers

Headline per-call AMD rates hide the real monthly cost. The per-call figure does not account for false positives that inflate the effective cost per useful detection, retries that add billed invocations before a live conversation occurs, or the carrier false answers that trigger AMD billing with no connection to show for it. At 10,000 answered calls per month the difference between providers is tens of dollars. At 250,000 calls, it is thousands, before a single voice minute is counted.

For high-volume outbound operations running thousands of calls per month, Plura’s bundled platform subscription replaces metered AMD spend entirely. Voicemail detection, branded caller ID, STIR/SHAKEN authentication, and real-time DNC scrubbing are included in the platform fee instead of stacking as separate line items that compound with volume.

[Run your numbers through Plura’s calculator to check your ROI in real time.](https://plura.ai/calculator?utm_term=voicemail-detection-pricing&utm_campaign=ai_growth_agent)

[Compare plans and rates side by side.](https://plura.ai/pricing?utm_term=voicemail-detection-pricing&utm_campaign=ai_growth_agent)

1 Plura AI maintains SOC 2, HIPAA, ISO, and GDPR posture as part of its platform infrastructure. References to compliance frameworks in this article describe Plura’s platform capabilities and do not constitute a guarantee that any customer using Plura will themselves be compliant with applicable laws or standards. Customers remain solely responsible for their own regulatory obligations, certifications, consent management, recordkeeping, and the claims they make to their own end users. Consult qualified legal counsel for guidance specific to your use case.

2 This article describes regulatory frameworks at a general level and does not constitute legal advice. Laws and regulations vary by jurisdiction, change over time, and apply differently depending on facts and circumstances. Readers should consult qualified legal counsel before making compliance decisions.

3 Performance figures, customer outcomes, and industry statistics referenced in this article are drawn from cited third-party sources or Plura customer case studies. Individual results vary based on implementation, use case, industry, audience, and execution. Past or aggregate performance is not a guarantee of future results.

4 References to third-party products, services, companies, or research are made for informational and comparative purposes only. Plura AI is not affiliated with, endorsed by, or sponsored by any third party named in this article unless explicitly stated. Trademarks and product names referenced remain the property of their respective owners.

This article is provided for informational purposes only and reflects Plura AI’s understanding at the time of publication. Product capabilities, integrations, and specifications are subject to change. For the most current information, visit plura.ai.

This article was produced with the assistance of AI tools and reviewed by Plura AI prior to publication.

## Read Next

- [Answering Machine Detection: How AMD Works in 2026](https://www.plura.ai/articles/voicemail-detection-outbound-calls/?utm_term=voicemail-detection-pricing&utm_campaign=ai_growth_agent)
- [Voicemail Detection: How to Choose the Right AMD Provider](https://www.plura.ai/articles/best-voicemail-detection-providers/?utm_term=voicemail-detection-pricing&utm_campaign=ai_growth_agent)
- [Voicemail Detection Software: How AMD Works in 2026](https://www.plura.ai/articles/best-voicemail-detection-software/?utm_term=voicemail-detection-pricing&utm_campaign=ai_growth_agent)
- [Predictive Dialer Voicemail Detection: AMD Guide](https://www.plura.ai/articles/predictive-dialer-voicemail-detection/?utm_term=voicemail-detection-pricing&utm_campaign=ai_growth_agent)

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- **Description:** Compare AMD pricing models across API, bundled, and self-hosted options. Plura AI bundles AMD so your per-call costs stay predictable at scale.
- **DateModified:** 2026-09-29T06:33:54.821Z
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  - **Url:** https://plura.ai

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