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Telnyx

Communications APIs and voice AI on a private global network

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About Telnyx

Telnyx provides programmable voice, messaging, SIP trunking, IoT connectivity and AI inference and voice-agent services through APIs. It owns parts of its network infrastructure and targets developers and enterprises building real-time voice and communications applications.

Common use cases

  • AI voice assistants for customer calls
  • Contact center voice automation
  • Programmatic SMS notifications
  • Connected device connectivity

Products and services

Voice API and SIP Trunking

Programmable voice calling and carrier-grade SIP trunking.

Voice AI Agents

Tools for building and deploying conversational voice agents.

Messaging

SMS, MMS and number-based messaging APIs.

IoT SIM

Global cellular connectivity for connected devices.

Inference

Hosted AI model inference and speech services.

Key features

  • Programmable voice APIs
  • Voice agent builder
  • Speech-to-text and text-to-speech
  • Global SIP trunking
  • Messaging APIs
  • IoT connectivity

Integrations

  • Twilio-compatible SIP
  • Microsoft Teams
  • Zoom Phone
  • Salesforce
  • LiveKit
  • Pipecat

Telnyx alternatives

FAQs

How is Telnyx priced?

Pricing is generally usage-based per minute, message or SIM, with custom terms for enterprise volumes.

Is it a software or network provider?

It combines an API platform with its own network infrastructure, so voice, messaging and AI services run on a single provider.

Who typically uses it?

Developers and enterprises that need programmable communications or voice AI agents.

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