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Head-to-head · Communication Platform as a Service (cPaaS) Platforms

Amazon Chime SDK PSTN Audio vs 8x8 CPaaS Voice

  • Updated Oct 2026
  • Both researched from official sources
  • 2 checks side by side
Higher score Amazon Chime SDK PSTN Audio #5 in Communication Platform as a Service (cPaaS) Platforms 8.8/10 Paid ✓ 1 of 6 features Visit AWS
8x8 CPaaS Voice #6 in Communication Platform as a Service (cPaaS) Platforms 8.7/10 Pricing on request ✓ 1 of 6 features Visit 8x8

Amazon Chime SDK PSTN Audio leads on 0 checks, 8x8 CPaaS Voice on 0, and 2 are even. Who comes out ahead on the 2 yes/no, price and count checks where we have data for both products. The editor score weighs everything else too.

Our verdict

  • Highest scoreAmazon Chime SDK PSTN Audio · 8.8/10

Amazon Chime SDK PSTN Audio scores higher on our rubric for communication platform as a service (cpaas) platforms: 8.8 against 8.7 out of 10; our editors rank them #5 and #6.

Amazon Chime SDK PSTN Audio is the better fit for AWS-centric teams adding PSTN calling and call flows. 8x8 CPaaS Voice is the better fit for organizations embedding programmable voice workflows.

  • Amazon Chime SDK PSTN Audio fits best

    AWS-centric teams adding PSTN calling and call flows

  • 8x8 CPaaS Voice fits best

    Organizations embedding programmable voice workflows

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.

Side by side

Feature Amazon Chime SDK PSTN Audio 8.8/10 Visit ↗ 8x8 CPaaS Voice 8.7/10 Visit ↗
At a glance
Editor score 8.8 8.7
Ranking #5 in Communication Platform as a Service (cPaaS) Platforms #6 in Communication Platform as a Service (cPaaS) Platforms
Best for AWS-centric teams adding PSTN calling and call flows Organizations embedding programmable voice workflows
Pricing model Paid Paid
Starting price $0.002/unit usage-based Pricing on request
Free plan — —
Free trial — —
Deployment Cloud Cloud
Platforms Web Web
Support Docs, Community Docs, Email
Built for Mid-market, Enterprise Mid-market, Enterprise
Features Amazon Chime SDK PSTN Audio 1/6 · 8x8 CPaaS Voice 1/6
SMS messaging Not checked yet Not checked yet
Voice calling Not checked yet Not checked yet
Video communications Not checked yet Not checked yet
WhatsApp channel Not checked yet Not checked yet
Phone numbers ✓ ✓
No-code builder Not checked yet Not checked yet
Specs
Supported countries Not checked yet Not checked yet
Our review
Pros
  • Supports inbound and outbound PSTN calling through APIs.
  • Connects call flows with AWS Lambda and recording to Amazon S3.
  • Offers number provisioning, porting and SIP trunk connectivity.
  • Controls inbound and outbound calls through REST APIs
  • Includes telephone-number provisioning and call recording
  • Supports application-integrated call workflows
Cons
  • Usage costs also include telephony, numbers and related AWS services.
  • Call recording adds a separate per-minute charge.
  • Its published feature set focuses on voice rather than broader cPaaS needs.
  • Pricing requires contacting sales
  • Focused on programmable voice rather than a broad channel mix
  • Support channels are limited to documentation and email
Our verdict

For developers building voice applications within AWS, Amazon Chime SDK PSTN Audio provides APIs for inbound and outbound telephone calls. It supports calls to provisioned numbers, outbound calls through an API, and call flows controlled…

Read the review →

8x8 CPaaS Voice is a cloud communications API product for developers and businesses embedding telephone calling in applications. Its inbound and outbound call controls, number provisioning, and call-management capabilities suit…

Read the review →
  1. Amazon Chime SDK PSTN AudioCommunication Platform as a Service (cPaaS) Platforms 8.8Paid
  2. 8x8 CPaaS VoiceCommunication Platform as a Service (cPaaS) Platforms 8.7Pricing on request

Strengths and trade-offs

  • Amazon Chime SDK PSTN Audio — where it wins

    • Supports inbound and outbound PSTN calling through APIs.
    • Connects call flows with AWS Lambda and recording to Amazon S3.
    • Offers number provisioning, porting and SIP trunk connectivity.

    Where it doesn't

    • Usage costs also include telephony, numbers and related AWS services.
    • Call recording adds a separate per-minute charge.
    • Its published feature set focuses on voice rather than broader cPaaS needs.

  • 8x8 CPaaS Voice — where it wins

    • Controls inbound and outbound calls through REST APIs
    • Includes telephone-number provisioning and call recording
    • Supports application-integrated call workflows

    Where it doesn't

    • Pricing requires contacting sales
    • Focused on programmable voice rather than a broad channel mix
    • Support channels are limited to documentation and email
  • Amazon Chime SDK PSTN Audio8.8/10 · Paid

    A voice-focused API for AWS teams adding programmable PSTN calls and call flows.

    Visit AWSFull verdict →
  • 8x8 CPaaS Voice8.7/10 · Pricing on request

    A cloud API for embedding inbound and outbound calling into business applications.

    Visit 8x8Full verdict →

More comparisons

All communication platform as a service (cPaaS) platforms comparisons → · Full ranking →

Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

Last updated · How we research and update