What is Telnyx used for?

Telnyx is a commercial communications platform offering voice, messaging, SIP trunking, IoT connectivity and AI inference APIs on its own network. It is a good fit for building voice AI agents for contact centers and sending verification codes by SMS.

How much does Telnyx cost?

Paid plans for Telnyx start at $500 per month, and there is no free plan.

Is Telnyx open source?

No. Telnyx is proprietary (closed-source) software and can't be self-hosted. Open-source alternatives to Telnyx include Fonoster.

What are some alternatives to Telnyx?

Telnyx competes with Twilio, Plivo and Vonage API. For open-source options, see Enlisted's ranked list of open-source Telnyx alternatives.

Telnyx: features, pricing and alternatives

About Telnyx

Telnyx is a communications and infrastructure platform for developers. Its catalog includes a Voice API, SIP trunking, SMS, email, WhatsApp, RCS, WebRTC, global phone numbers, verification and number lookup APIs, and IoT connectivity such as SIM and eSIM.

The vendor currently emphasizes infrastructure for real-time AI agents. It says it is a licensed carrier that runs its own network, edge compute and GPUs, and it offers voice AI agents, text-to-speech, speech-to-text, embeddings, search, an inference API for open-weight models, and storage and database primitives. Networking products such as virtual cross connects, cloud VPN and global IP are also listed.

Solution pages cover healthcare, finance, travel, logistics, contact centers, insurance and retail. Telnyx is a hosted commercial service with free sign-up, documentation, code examples and pricing pages per product.

Key features

Voice API and SIP trunking
SMS, email, WhatsApp and RCS APIs
Global phone numbers and number lookup
IoT SIM and eSIM connectivity
Voice AI agents with speech APIs
Serverless inference API for open models

Good fit for

→Building voice AI agents for contact centers
→Sending verification codes by SMS

Tags: cpaas; voice-api; sms-api; sip-trunking; iot; voice-ai; inference

Telnyx: questions and answers

What is Telnyx used for?: Telnyx is a commercial communications platform offering voice, messaging, SIP trunking, IoT connectivity and AI inference APIs on its own network. It is a good fit for building voice AI agents for contact centers and sending verification codes by SMS.
How much does Telnyx cost?: Paid plans for Telnyx start at $500 per month, and there is no free plan.
Is Telnyx open source?: No. Telnyx is proprietary (closed-source) software and can't be self-hosted. Open-source alternatives to Telnyx include Fonoster.
What are some alternatives to Telnyx?: Telnyx competes with Twilio, Plivo and Vonage API. For open-source options, see Enlisted's ranked list of open-source Telnyx alternatives.