Amazon Chime SDK PSTN Audio vs Twilio Segment

Amazon Chime SDK PSTN Audio7.1Visit Twilio Segment6.6Visit

Higher score Amazon Chime SDK PSTN Audio #5 in Communication Platform as a Service (cPaaS) Platforms 7.1/10 Paid ✓ 1 of 6 features Visit AWS

vs

Twilio Segment #8 in Communication Platform as a Service (cPaaS) Platforms 6.6/10 Free plan · paid from $120/mo · 14-day trial Free plan✓ 0 of 6 features Visit Twilio Segment

• Amazon Chime SDK PSTN Audio fits best

  AWS-centric teams adding PSTN calling and call flows

• Twilio Segment fits best

  Teams managing customer data and audience activation

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Side by side

Feature	Amazon Chime SDK PSTN Audio 7.1/10 Visit ↗	Twilio Segment 6.6/10 Visit ↗
At a glance
Editor score	7.1	6.6
Ranking	#5 in Communication Platform as a Service (cPaaS) Platforms	#8 in Communication Platform as a Service (cPaaS) Platforms
Best for	AWS-centric teams adding PSTN calling and call flows	Teams managing customer data and audience activation
Pricing model	Paid	Free plan + paid
Starting price	Not published	$120/mo
Free plan	—	✓ (best)
Free trial	—	—
Deployment	Cloud	Cloud, Mobile
Platforms	Web	Web, iOS, Android
Integrations	4 integrations	6 integrations
Features Amazon Chime SDK PSTN Audio 1/6 · Twilio Segment 0/6
SMS messaging	Not published	Not published
Voice calling	Not published	Not published
Video communications	Not published	Not published
WhatsApp channel	Not published	Not published
Phone numbers	✓ (best)	Not published
No-code builder	Not published	Not published
Specs
Supported countries	Not published	Not published
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.	Collects first-party data from websites, apps, servers, and cloud applications Unifies profiles, resolves identities, and supports audience segmentation Connects to 700+ integrations, including warehouses, CRMs, and marketing tools
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.	Its described focus is customer data, not communications APIs Team starts at $120 per month for Connections; CDP plans use custom pricing Free plan is limited to 2 sources and 1 data warehouse destination
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 →	Twilio Segment is a customer data platform for engineering, marketing, and product teams that need to collect first-party data, unify customer profiles, resolve identities, and activate audiences in downstream tools. It supports data from… Read the review →

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.

• Twilio Segment — where it wins

  • Collects first-party data from websites, apps, servers, and cloud applications
  • Unifies profiles, resolves identities, and supports audience segmentation
  • Connects to 700+ integrations, including warehouses, CRMs, and marketing tools

  Where it doesn't

  • Its described focus is customer data, not communications APIs
  • Team starts at $120 per month for Connections; CDP plans use custom pricing
  • Free plan is limited to 2 sources and 1 data warehouse destination

• Amazon Chime SDK PSTN Audio7.1/10 · Paid

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

  Visit AWSFull verdict →
• Twilio Segment6.6/10 · Free plan · paid from $120/mo · 14-day trial

  A customer data platform, not a communications API suite, with a free tier and broad integrations.

  Visit Twilio SegmentFull verdict →