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Kadeno vs Telnyx: Voice API Pricing
Telnyx is a developer-focused CPaaS with competitive pricing and a private IP network. Kadeno matches or beats Telnyx on voice pricing with a simpler, audio-streaming-first API.
Pricing Comparison
| Service | Kadeno | Telnyx | Result |
|---|
| Inbound voice | $0.007/min | $0.0075/min | Kadeno 7% cheaper |
| Outbound voice | $0.009/min | $0.009/min | Tie |
| Local number | $1.00/mo | $1.00/mo | Tie |
| Toll-free number | $1.15/mo | $1.00/mo | Telnyx cheaper |
| SMS outbound | $0.008/msg | $0.004/msg | Telnyx 50% cheaper |
| SMS inbound | $0.003/msg | $0.003/msg | Tie |
| Platform fee | $0 | $0 | Tie |
Cost at Scale: 1,000 Inbound Minutes + 1 Number
| Kadeno | Telnyx |
|---|
| Voice (1,000 min) | $7.00 | $7.50 |
| Number (1 local) | $1.00 | $1.00 |
| Total | $8.00 | $8.50 |
| Savings | $0.50/month on voice (6%) |
Honest Comparison
Telnyx is a strong competitor. Here's where each platform wins:
Where Kadeno Wins
- Lower inbound voice rate — $0.007 vs $0.0075/min. Matters at scale.
- Audio-streaming-first API — Kadeno is built for real-time audio processing. WebSocket streaming is the primary interface, not an afterthought.
- AI-engine agnostic — Bring any AI model. Telnyx pushes their own AI integrations.
- Simpler API — Fewer concepts to learn. No TeXML, no call control applications, no connection objects. Just numbers, endpoints, and audio.
Where Telnyx Wins
- Cheaper SMS — $0.004/msg outbound vs Kadeno's $0.008. If SMS is your primary use case, Telnyx is better.
- Global coverage — Telnyx offers numbers and voice in 50+ countries including Japan (050 numbers). Kadeno is US-only currently.
- Private network — Telnyx operates their own IP backbone. Lower latency for international routes.
- MMS support — Telnyx has reliable MMS. Kadeno does not currently offer MMS.
- Mature platform — Telnyx has been operating since 2009 with extensive documentation and SDKs.
Bottom Line
If you're building a voice-first application (AI voice agents, VoIP, call processing) with primarily US traffic, Kadeno offers a simpler API at a lower voice rate. If you need global coverage, high-volume SMS, or MMS, Telnyx is the stronger choice today.