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Best Amazon Chime SDK PSTN Audio Alternatives in 2026

#7 of 53 in Voice APIsCommunication Platform as a Service (cPaaS) PlatformsVideo Communications SoftwareVideo APIs

The top Amazon Chime SDK PSTN Audio alternatives are Vonage Voice API, Twilio Elastic SIP Trunking and Bandwidth Voice API: 15 voice APIs our editors would look at instead of Amazon Chime SDK PSTN Audio, in our ranking order.

8.8/10Editor score
Visit AWS
Amazon Chime SDK PSTN Audio8.8 Visit AWS

Amazon Chime SDK PSTN Audio: A focused AWS building block for developers creating programmable PSTN call flows. Where it falls short: API-only coverage requires development work for end-user applications.

Switching from Amazon Chime SDK PSTN Audio? For most voice apis buyers the best Amazon Chime SDK PSTN Audio alternative is Vonage Voice API, built for full-featured voice and AI call workflows. On a budget, Telnyx Voice API starts at $500/mo.

Why People Look for an Amazon Chime SDK PSTN Audio Alternative

  • API-only coverage requires development work for end-user applications
  • Usage-based billing spans calling, phone numbers, and connected AWS services
  • The default regional active-call quota is 10 concurrent calls

Quick Picks by What You Need

All 15 Amazon Chime SDK PSTN Audio Alternatives, Ranked

Advertiser disclosure: iTechGuides is reader-supported. Vendors can pay for top positions in our rankings and for a place on other products' pages, and we may earn a commission when you click some links. Bought places stand at the number bought; this page and our disclosure say so. Paying vendors may get a fuller, more detailed review from our editors, and that review can change their score. How we rank.

  1. Vonage Voice API

    Best forFull-featured voice and AI call workflows

    • Better than Amazon Chime SDK PSTN Audio:
    • Editor score 9.4 vs 8.8

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

    • SIP support
    • Call recording
    • Phone number support
    Our Vonage Voice API verdict → Visit Vonage
    9.4/10★★★★★
    Visit Vonage
  2. Twilio Elastic SIP Trunking

    Best forBusinesses connecting SIP infrastructure to PSTN

    • Better than Amazon Chime SDK PSTN Audio:
    • Editor score 9.2 vs 8.8

    A focused SIP-to-PSTN service with secure trunking and pay-as-you-go voice charges.

    Our Twilio Elastic SIP Trunking verdict → Visit Twilio
    9.2/10★★★★★
    Visit Twilio
  3. Bandwidth Voice API

    Best forMature PSTN voice and media streaming projects

    • Better than Amazon Chime SDK PSTN Audio:
    • Editor score 9.1 vs 8.8

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

    • SIP support
    • Call recording
    • Phone number support
    Pricing on request Our Bandwidth Voice API verdict → Visit Bandwidth
    9.1/10★★★★★
    Visit Bandwidth
  4. Twilio Programmable Voice

    Best forBroad, programmable voice deployments

    • Better than Amazon Chime SDK PSTN Audio:
    • Editor score 9.0 vs 8.8

    A broad voice API for calling, IVR, SIP, recording, conferencing, and SDK-based apps.

    • SIP support
    • Call recording
    • Phone number support
    Our Twilio Programmable Voice verdict → Visit Twilio
    9.0/10★★★★☆
    Visit Twilio
  5. RingCentral Voice API

    Best forTeams building call workflows around RingCentral

    • Better than Amazon Chime SDK PSTN Audio:
    • Editor score 9.0 vs 8.8

    A RingEX-included voice API for building call workflows across WebRTC, SIP and REST.

    • SIP support
    • Call recording
    • Phone number support
    Our RingCentral Voice API verdict → Visit RingCentral
    9.0/10★★★★☆
    Visit RingCentral
  6. Microsoft Azure Communication Services Call Automation

    Best forAzure teams automating calls with event workflows

    • Better than Amazon Chime SDK PSTN Audio:
    • Editor score 8.9 vs 8.8

    A capable Azure voice API for event-driven call automation with usage-based pricing.

    • Call recording
    • Phone number support
    • Outbound calling
    Our Microsoft Azure Communication Services Call Automation verdict → Visit Azure
    8.9/10★★★★☆
    Visit Azure
  7. Amazon Chime SDK Voice Connector

    Best forAWS users connecting existing PBX infrastructure

    A focused voice connector for PBX-to-PSTN calling within the AWS ecosystem.

    • SIP support
    • Call recording
    • Phone number support
    Our Amazon Chime SDK Voice Connector verdict → Visit AWS
    8.7/10★★★★☆
    Visit AWS
  8. Orange Voice API

    Best forBusinesses needing scenario-based voice automation

    A scenario-focused voice API for businesses building custom calling workflows.

    • Call recording
    • Phone number support
    • Outbound calling
    Pricing on request Our Orange Voice API verdict → Contact Orange
    8.6/10★★★★☆
    Contact Orange
  9. 8x8 CPaaS Voice

    Best forMid-market and enterprise app-integrated voice workflows

    A cloud voice API for teams embedding inbound and outbound calling in applications.

    • Call recording
    • Phone number support
    • Outbound calling
    Pricing on request Our 8x8 CPaaS Voice verdict → Visit 8x8
    8.5/10★★★★☆
    Visit 8x8
  10. Kaleyra Voice API

    Best forTeams needing simple IVR and call masking

    A focused voice API for IVR, calling workflows, recording, and call masking.

    • Call recording
    • Phone number support
    • Outbound calling
    Pricing on request Our Kaleyra Voice API verdict → Visit Kaleyra
    8.4/10★★★★☆
    Visit Kaleyra
  11. Telesign Voice API

    Best forTeams needing multilingual voice messaging and recording

    A cloud voice API for enterprise calling, messaging, recording, and transcription workflows.

    • Call recording
    • Phone number support
    • Outbound calling
    Our Telesign Voice API verdict → Visit Telesign
    8.3/10★★★★☆
    Visit Telesign
  12. Telnyx Voice API

    Best forFeature-rich voice with usage-based pricing

    A broad voice API for developers building global calling and AI-enabled communications.

    • SIP support
    • Call recording
    • Phone number support
    Our Telnyx Voice API verdict → Visit Telnyx
    8.2/10★★★★☆
    Visit Telnyx
  13. Apifonica Voice API

    Best forTeams wanting a trialable API with speech-service options

    A trialable cloud Voice API for inbound, outbound, IVR, SIP, and programmable call control.

    • SIP support
    • Call recording
    • Phone number support
    Pricing on request · 30-day trial Our Apifonica Voice API verdict → Visit Apifonica
    8.1/10★★★★☆
    Visit Apifonica
  14. BICS Voice API

    Best forEnterprises combining voice with messaging channels

    A cloud voice API for businesses coordinating calling with other messaging channels.

    • SIP support
    • Call recording
    • Phone number support
    Pricing on request Our BICS Voice API verdict → Visit BICS
    8.0/10★★★★☆
    Visit BICS
  15. Telnyx SIP Trunking

    Best forSIP trunking with caller identity controls

    A focused SIP trunking service with caller identity controls and usage-based pricing.

    • SIP support
    • Phone number support
    • Outbound calling
    Our Telnyx SIP Trunking verdict → Visit Telnyx
    7.9/10★★★★☆
    Visit Telnyx

Amazon Chime SDK PSTN Audio Alternatives: Common Questions

What is the best alternative to Amazon Chime SDK PSTN Audio?

Vonage Voice API: #1 in our Voice APIs ranking, with an editor score of 9.4 out of 10. A broad voice API for building PSTN, SIP, WebRTC, IVR, and AI call workflows.

Why do people look for Amazon Chime SDK PSTN Audio alternatives?

API-only coverage requires development work for end-user applications; Usage-based billing spans calling, phone numbers, and connected AWS services; The default regional active-call quota is 10 concurrent calls.

How do I switch from Amazon Chime SDK PSTN Audio?

Export your data from Amazon Chime SDK PSTN Audio (most tools have an export in their settings). Sign up for the alternative; start on its free plan or trial if it has one. Import your export and set up the integrations your team relies on. Run both side by side for a short while, then cancel Amazon Chime SDK PSTN Audio.

How to Switch from Amazon Chime SDK PSTN Audio

  1. Export your data from Amazon Chime SDK PSTN Audio (most tools have an export in their settings).
  2. Sign up for the alternative; start on its free plan or trial if it has one.
  3. Import your export and set up the integrations your team relies on.
  4. Run both side by side for a short while, then cancel Amazon Chime SDK PSTN Audio.

Amazon Chime SDK PSTN Audio vs Each Alternative

#ToolFree planPaid fromInbound callingOutbound callingPhone number supportSIP supportScore
7Amazon Chime SDK PSTN AudioNo$0.002/unit usage-basedYesYesYesYes8.8
1Vonage Voice APINoYesYesYesYes9.4
2Twilio Elastic SIP TrunkingNo9.2
3Bandwidth Voice APINoYesYesYesYes9.1
4Twilio Programmable VoiceNoYesYesYesYes9.0
5RingCentral Voice APINoYesYesYesYes9.0
6Microsoft Azure Communication Services Call AutomationNoYesYesYes8.9
7Amazon Chime SDK Voice ConnectorNo$0.002216/unit usage-basedYesYesYesYes8.7
8Orange Voice APIYesYesYes8.6
98x8 CPaaS VoiceNoYesYesYes8.5
10Kaleyra Voice APIYesYesYes8.4
11Telesign Voice APINoYesYesYes8.3
12Telnyx Voice APINo$500/moYesYesYesYes8.2
13Apifonica Voice APINoYesYesYesYes8.1
14BICS Voice APINoYesYesYesYes8.0
15Telnyx SIP TrunkingNoYesYesYesYes7.9

Head-to-Head

Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

Last updated · How we research and update