Review pending — Competitor claims on this page require PMM + legal sign-off before public release. Data is sourced from publicly available documentation but has not been reviewed by Telnyx product marketing or legal.
Telnyx vs Amazon Chime SDK
Amazon Chime SDK is for building real-time comms within your app. Telnyx is carrier infrastructure for reaching the phone network. For voice AI agents that need PSTN connectivity, they are fundamentally different categories.
Last verified: 2026-04-21
Don't take our word for it. Run the benchmark CLI against Amazon Chime yourself.
npx @telnyx/benchmark --compare amazon-chimeQuick comparison of key infrastructure signals. Chime SDK cannot reach the phone network — Telnyx can.
| Signal | Telnyx | Amazon Chime SDK | Impact |
|---|---|---|---|
| carrier owned | Chime SDK is app-layer, not carrier infrastructure; cannot terminate phone calls | ||
| pstn connectivity | No SIP trunking, no phone numbers — Chime SDK cannot reach the phone network | ||
| sip trunking | Chime SDK has no SIP trunking capability | ||
| phone numbers | Chime SDK has no phone number provisioning | ||
| sms | Chime SDK has no SMS/MMS capability | ||
| vendors required for voice agent | 1 | 4 | Chime + AWS Transcribe + AWS Polly + AWS Bedrock = 4 AWS services minimum |
| stir shaken | A | N/A | STIR/SHAKEN requires carrier infrastructure; Chime SDK is not a carrier |
Chime SDK is an app-layer SDK on AWS. Telnyx is carrier infrastructure that owns the network. Different categories entirely.
Amazon Chime SDK
Chime SDK uses AWS infrastructure; no dedicated edge compute for voice AI
Amazon Chime SDK and Telnyx serve fundamentally different markets. Chime SDK charges per-minute + per-GB for media; Telnyx charges per-minute for carrier services. Voice AI agents require carrier infrastructure that Chime SDK does not provide.
| Metric | Telnyx | Amazon Chime SDK |
|---|---|---|
| voice per min | $0.005/min | Not applicable Chime SDK has no PSTN/telephony; priced per-minute for audio events instead |
| stt per min | $0.015/min | Not included Requires AWS Transcribe (separate billing) |
| tts per 1k chars | $0.003/1K chars | Not included Requires AWS Polly (separate billing) |
| estimated monthly | ~$23/mo | Requires AWS pricing calculator(low confidence) Multiple AWS services (Chime + Transcribe + Polly + Bedrock) with separate billing |
| Metric | Telnyx | Amazon Chime SDK |
|---|---|---|
| audio per min | $0.005/min SIP | $0.002/min(medium confidence) Chime SDK PSTN Audio Application Usage rate; does not include PSTN access |
Chime SDK latency is measured within AWS infrastructure. For voice AI agents that need PSTN connectivity, Chime SDK cannot complete the call path without a third-party carrier.
<50ms
p99 latency (type: measured)
~100ms
p99 latency (type: derived · low confidence)
Chime SDK latency within AWS region; does not account for PSTN routing (not available)
Both platforms inherit strong compliance from their infrastructure. Telnyx adds telecom-specific certifications like STIR/SHAKEN that require carrier infrastructure.
| Standard | Telnyx | Amazon Chime SDK |
|---|---|---|
| soc2 type ii | ||
| hipaa | ||
| gdpr | ||
| iso 27001 | ||
| pci dss | ||
| stir shaken | N/A |
Telnyx offers telecom-first SDKs with built-in voice AI. Chime SDK offers AWS-native SDKs — but requires multiple AWS AI services for voice AI, each billed separately.
Telnyx
Amazon Chime SDK
Telnyx
Amazon Chime SDK
Telnyx
Amazon Chime SDK
Chime SDK requires AWS AI services (Transcribe, Polly, Bedrock/Lex) for voice AI — each billed separately
Honest guidance — they serve different markets. If you need to reach the phone network, only one of these can do it.
Amazon Chime SDK is great for in-app audio. But voice AI agents need carrier infrastructure — SIP trunking, phone numbers, SMS — that Chime SDK simply doesn't have. Start with Telnyx today.
