Bandwidth Voice API vs Infobip Voice API

Bandwidth Voice API9.1Visit Infobip Voice API7.1Visit

Higher score Bandwidth Voice API #3 in Voice APIs 9.1/10 Pricing on request ✓ 5 of 5 features Visit Bandwidth

vs

Infobip Voice API #24 in Voice APIs 7.1/10 60-day trial Free trial✓ 5 of 5 features Visit Infobip

• Bandwidth Voice API fits best

  Mature PSTN voice and media streaming projects

• Infobip Voice API fits best

  Teams wanting a long trial and broad voice tools

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Side by side

Feature	Bandwidth Voice API 9.1/10 Visit ↗	Infobip Voice API 7.1/10 Visit ↗
At a glance
Editor score	9.1	7.1
Ranking	#3 in Voice APIs	#24 in Voice APIs
Best for	Mature PSTN voice and media streaming projects	Teams wanting a long trial and broad voice tools
Pricing model	Paid	Paid
Starting price	Pricing on request	60-day trial
Free plan	—	—
Free trial	—	60 days
Deployment	Cloud	Mobile, Cloud
Features Bandwidth Voice API 5/5 · Infobip Voice API 5/5
Inbound calling	✓	✓
Outbound calling	✓	✓
Phone number support	✓	✓
SIP support	✓	✓
Call recording	✓	✓
Specs
Concurrent call limit	Not checked yet	Not checked yet
SDK languages	C#, Java, Node.js, PHP, Python, Ruby	JavaScript, Python, Java, Go, PHP, C#, Ruby
Our review
Pros	Inbound and outbound PSTN calling with REST APIs, webhooks, and BXML Voice, transcription, recording, conferencing, and answering-machine detection WebSocket media streaming with OpenAI Realtime API integration	Supports inbound and outbound calls across PSTN, WebRTC, and SIP Combines IVR, conferencing, recording, streaming, transcription, and TTS Offers API, web, iOS, and Android access with multiple SDK languages
Cons	Paid service with usage-based rates rather than a conventional monthly plan No permanent $0 Voice API plan API-only access requires development work to build user-facing workflows	No free plan is available after the trial Pay-as-you-go pricing varies by country and currency The broad feature set may exceed basic calling requirements
Our verdict	Bandwidth Voice API gives developers programmable inbound and outbound telephone calling through HTTPS requests, webhooks, REST APIs, and Bandwidth XML (BXML). It is aimed at businesses and software teams building IVR systems,… Read the review →	Infobip Voice API provides programmable communications for businesses and developers building voice applications. It supports inbound and outbound calls across PSTN, WebRTC, and SIP, with voice-number provisioning, IVR, click-to-call,… Read the review →

Strengths and trade-offs

• Bandwidth Voice API — where it wins

  • Inbound and outbound PSTN calling with REST APIs, webhooks, and BXML
  • Voice, transcription, recording, conferencing, and answering-machine detection
  • WebSocket media streaming with OpenAI Realtime API integration

  Where it doesn't

  • Paid service with usage-based rates rather than a conventional monthly plan
  • No permanent $0 Voice API plan
  • API-only access requires development work to build user-facing workflows

• Infobip Voice API — where it wins

  • Supports inbound and outbound calls across PSTN, WebRTC, and SIP
  • Combines IVR, conferencing, recording, streaming, transcription, and TTS
  • Offers API, web, iOS, and Android access with multiple SDK languages

  Where it doesn't

  • No free plan is available after the trial
  • Pay-as-you-go pricing varies by country and currency
  • The broad feature set may exceed basic calling requirements

• Bandwidth Voice API9.1/10 · Pricing on request

  A broad PSTN voice API for calling, media control, transcription, and AI streaming.

  Visit BandwidthFull verdict →
• Infobip Voice API7.1/10 · 60-day trial

  A broad voice API suite with a 60-day trial and pay-as-you-go pricing.

  Visit InfobipFull verdict →