Vonage Voice API vs Plivo Voice API

Vonage Voice API9.4Visit Plivo Voice API7.1Visit

Higher score Vonage Voice API #1 in Voice APIs 9.4/10 Paid ✓ 5 of 5 features Visit Vonage

vs

Plivo Voice API #25 in Voice APIs 7.1/10 Paid ✓ 5 of 5 features Visit Plivo

• Vonage Voice API fits best

  Full-featured voice and AI call workflows

• Plivo Voice API fits best

  Developers needing SIP and streaming voice

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Side by side

Feature	Vonage Voice API 9.4/10 Visit ↗	Plivo Voice API 7.1/10 Visit ↗
At a glance
Editor score	9.4	7.1
Ranking	#1 in Voice APIs	#25 in Voice APIs
Best for	Full-featured voice and AI call workflows	Developers needing SIP and streaming voice
Pricing model	Paid	Paid
Starting price	Not checked yet	$1,000/mo
Free plan	—	—
Free trial	—	—
Deployment	Cloud, Mobile	Cloud
Platforms	Web, iOS, Android	Web
Features Vonage Voice API 5/5 · Plivo Voice API 5/5
Inbound calling	✓	✓
Outbound calling	✓	✓
Phone number support	✓	✓
SIP support	✓	✓
Call recording	✓	✓
Specs
Concurrent call limit	Not checked yet	50 calls
SDK languages	Ruby, Python, Node.js, PHP, .NET, Java, Kotlin, JavaScript	Python, Node.js, Ruby, PHP, Java, .NET, Go
Our review
Pros	Supports inbound and outbound PSTN calling with programmable call flows. Combines SIP, WebRTC, WebSockets, IVR, voice bots, and transcription. Offers client and server SDKs across web, mobile, and multiple languages.	Supports inbound, outbound, PSTN and SIP calling Adds recording, conferences, webhooks and WebSocket streaming Offers SDK examples for Python, Node.js, Ruby, PHP, Java, .NET and Go
Cons	No perpetual free plan is available. Usage costs vary by call type, destination, and endpoint. Requires API-based development for call control and application workflows.	Pay-as-you-go includes 2 RPS and 50-call concurrency Enterprise starts at $1,000 per month Coverage differs between Pay as you go and Enterprise
Our verdict	Vonage Voice API is a programmable communications service for developers building inbound and outbound voice experiences. It supports PSTN phone numbers, SIP endpoints, WebSockets, and WebRTC-based in-app calling across web, iOS, Android,… Read the review →	Plivo Voice API lets developers programmatically make and receive telephone calls through HTTP APIs and Plivo XML. It is designed for businesses adding communications features to web and mobile applications, with inbound calling on Plivo… Read the review →

Strengths and trade-offs

• Vonage Voice API — where it wins

  • Supports inbound and outbound PSTN calling with programmable call flows.
  • Combines SIP, WebRTC, WebSockets, IVR, voice bots, and transcription.
  • Offers client and server SDKs across web, mobile, and multiple languages.

  Where it doesn't

  • No perpetual free plan is available.
  • Usage costs vary by call type, destination, and endpoint.
  • Requires API-based development for call control and application workflows.

• Plivo Voice API — where it wins

  • Supports inbound, outbound, PSTN and SIP calling
  • Adds recording, conferences, webhooks and WebSocket streaming
  • Offers SDK examples for Python, Node.js, Ruby, PHP, Java, .NET and Go

  Where it doesn't

  • Pay-as-you-go includes 2 RPS and 50-call concurrency
  • Enterprise starts at $1,000 per month
  • Coverage differs between Pay as you go and Enterprise

• Vonage Voice API9.4/10 · Paid

  A broad voice API for building PSTN, SIP, WebRTC, IVR, and AI call workflows.

  Visit VonageFull verdict →
• Plivo Voice API7.1/10 · Paid

  A developer-focused Voice API for inbound, outbound, SIP and streaming calls.

  Visit PlivoFull verdict →