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Kadeno vs Twilio: Voice API Pricing
Twilio is the industry standard for programmable telephony. Kadeno offers the same core capabilities — voice, SMS, phone numbers — at lower rates with no platform overhead.
Pricing Comparison
| Service | Kadeno | Twilio | Savings |
|---|
| Inbound voice | $0.007/min | $0.0085/min | 18% cheaper |
| Outbound voice | $0.009/min | $0.014/min | 36% cheaper |
| Local number | $1.00/mo | $1.15/mo | 13% cheaper |
| Toll-free number | $1.15/mo | $2.15/mo | 47% cheaper |
| SMS outbound | $0.008/msg | $0.0083/msg | 4% cheaper |
| SMS inbound | $0.003/msg | $0.0083/msg | 64% cheaper |
| Platform fee | $0 | $0 | — |
Cost at Scale: 1,000 Inbound Minutes + 1 Number
| Kadeno | Twilio |
|---|
| Voice (1,000 min) | $7.00 | $8.50 |
| Number (1 local) | $1.00 | $1.15 |
| Total | $8.00 | $9.65 |
| Savings | $1.65/month (17%) |
At 10,000 minutes/month, that's $16.50/month saved — $198/year.
What Kadeno Does Differently
- Real-time audio streaming — Bidirectional WebSocket audio for AI voice agents, transcription, and live processing. Twilio offers Media Streams but requires TwiML and additional configuration.
- AI-engine agnostic — Connect any AI endpoint (OpenAI, Anthropic, custom models). Twilio locks you into their AI Assistants product.
- No TwiML — RESTful API with JSON. No XML markup language to learn.
- Pay-as-you-go from day one — No trial credits that expire. No upgrade prompts. Card on file, usage billed monthly.
When Twilio is the Better Choice
- Global coverage — Twilio supports 180+ countries. Kadeno currently covers US numbers only.
- Mature ecosystem — Twilio has extensive SDKs, helper libraries, and community resources built over 15+ years.
- Advanced features — Twilio offers video, conversations API, email (SendGrid), and other communication channels beyond voice and SMS.