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SPECIFICTION
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Plivo Voice API

plivo.com

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Spec score 8.1 #8 of 52 in Voice APIs

What it is

Plivo Voice API lets web and mobile applications make and receive calls programmatically, play audio, record conversations, and build interactive voice applications. It connects calls across PSTN, SIP, and WebRTC endpoints. Features include queues, conferences, text to speech, dual-channel recording, DTMF input, speech recognition, answering machine detection, voicemail transcription, and custom caller ID. Its Audio Streams API sends raw audio from active calls over WebSocket for transcription, voice AI, analytics, or custom processing. Plivo lists SDKs for Python, Node.js, Ruby, PHP, Java,.NET, and Go, along with integrations including Zapier, n8n, Pipedream, Tray, EngageBay, and Microsoft Power Automate. The service is listed for Android, iOS, web, and API. The Voice API pay-as-you-go plan is listed at $0.01 a month; call routes and features have separate rates. Calls are billed in 60-second increments. Pay-as-you-go accounts receive $10 in free credits without a credit card. Plivo was founded in 2011 and is headquartered in Austin, Texas.

Spec sheet

Intended users
Plivo describes its APIs as enabling web and mobile apps to integrate messaging and voice functionality and engage customers programmatically.Read 30 Sep 2026 · plivo.com
Integrations
Listed integrations include Microsoft Power Automate, Zapier, n8n, Pipedream, Tray, and EngageBay for voice and other Plivo communication workflows.Read 30 Sep 2026 · plivo.com
Security
Plivo says customer data is logically separated, encrypted in transit with TLS 1.2 or greater, and encrypted at rest with AES-256.Read 30 Sep 2026 · plivo.com
Compliance
Plivo lists SOC 2 certification, HIPAA/HITECH compliance, PCI DSS Level 1 compliance, and GDPR compliance.Read 30 Sep 2026 · plivo.com
Support
Plivo says it responds to priority 1 business-critical incidents around the clock, 365 days a year.Read 30 Sep 2026 · plivo.com
Headquarters
Austin, Texas, USARead 28 Sep 2026 · plivo.com
Founded
2011Read 28 Sep 2026 · plivo.com
Company
Plivo says it was founded in 2011 and lists its headquarters in Austin, Texas.Read 30 Sep 2026 · plivo.com
Audio streaming
The Audio Streams API sends raw audio from active calls over WebSocket for uses including real-time transcription, voice AI, call analytics, and custom audio processing.Read 30 Sep 2026 · plivo.com
Billing increment
Voice API calls use 60-second billing increments, so a 10-second call is billed as one minute.Read 30 Sep 2026 · plivo.com
Call capacity
For US data region accounts created on or after October 1, 2026, the listed US limits range from 1 to 2 outbound calls per second and 2 to 50 concurrent calls depending on plan and lifetime spend.Read 30 Sep 2026 · plivo.com
Call handling
The Voice API lets applications programmatically make and receive calls, play audio, record conversations, and build interactive voice applications.Read 30 Sep 2026 · plivo.com
Call networks
Plivo supports calls across PSTN, SIP, and WebRTC endpoints.Read 30 Sep 2026 · plivo.com
Developer SDKs
The Voice API quickstart lists SDKs for Python, Node.js, Ruby, PHP, Java, .NET, and Go.Read 30 Sep 2026 · plivo.com
Free credits
The pricing page offers $10 in free credits with no credit card required.Read 30 Sep 2026 · plivo.com
Voice features
Features include call queueing, conferences, text to speech, audio playback, dual-channel recording, DTMF input, speech recognition, answering machine detection, voicemail transcription, and custom caller ID.Read 30 Sep 2026 · plivo.com

Plans and prices

Pay as you go Priced on request $10 in free credits · No credit card required · 2 RPS and 50 call concurrency · Coverage in the United States and India Read 19 Sep 2026 · plivo.com
Voice API pay as you go $0.01 a month Per minute for outbound local calls; other call routes and features are priced separately. US local outbound $0.0115/min · local inbound $0.0055/min · toll-free outbound $0.0060/min · Browser SDK and SIP $0.0033/min · local numbers $0.50/month · toll-free numbers $1.00/month Read 30 Sep 2026 · plivo.com
Enterprise $1,000 a month Starts at $1,000 per month. 190+ country coverage · custom pricing, volume discounts, billing intervals and concurrency · BAA, HIPAA and SSO Read 30 Sep 2026 · plivo.com

Every Plivo Voice API plan and price →

Strong points and limits

Strong points

  • Supports PSTN, SIP, and WebRTC calls
  • Includes call recording and transcription features
  • SDKs listed for seven languages
  • $10 in free credits without a credit card

Limits

  • No free plan
  • Calls are billed in 60-second increments
  • Pay-as-you-go calls have a 50-call concurrency limit

Who it suits

It suits developers building voice calling into web or mobile applications, including teams that need SIP support, call recording, or multiple call-handling features. Its SDK list covers seven languages.

Verdict

Plivo combines programmable calling with a broad set of voice features, SDKs, and integrations. Check the separate route and feature rates and the 60-second billing increment when estimating usage.

Where Specifiction places it

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