***

title: Connector Options
subtitle: Compare connector options and jump into runnable examples.
--------------------------------------------------------------------

Choose a connector based on your preferred model provider and feature set. Every connector page includes an overview, architecture notes, and code-first VoxEngine examples.

<div>
  <a href="/voice-ai-connectors/openai-realtime-voice-ai-connector/openai-realtime-voice-ai-connector-overview">
    <span>
      <img src="https://files.buildwithfern.com/voximplant.docs.buildwithfern.com/7800930955052cd54de5d4f4261ac4f76193011c10aa2a29b54ef5566cedd0dd/docs/assets/connectors/openai.svg" alt="OpenAI logo" />
    </span>

    <h3>
      OpenAI Realtime
    </h3>

    <p>
      Low-latency speech-to-speech sessions with tool calling and half-cascade patterns.
    </p>

    <span>
      Inbound | Outbound | Function calling
    </span>
  </a>

  <a href="/voice-ai-connectors/gemini-live-voice-ai-connector/gemini-live-voice-ai-connector-overview">
    <span>
      <img src="https://files.buildwithfern.com/voximplant.docs.buildwithfern.com/404eba6940a54e63d40edcce2d2e7cb2b3dbfec765e7a1d523662b6f4e0d6747/docs/assets/connectors/gemini.svg" alt="Google Gemini logo" />
    </span>

    <h3>
      Gemini Live
    </h3>

    <p>
      Gemini live audio sessions with support for direct Gemini API or Vertex AI credentials.
    </p>

    <span>
      Inbound | Outbound | Function calling
    </span>
  </a>

  <a href="/voice-ai-connectors/ultravox-voice-ai-connector/ultravox-voice-ai-connector-overview">
    <span>
      <img src="https://files.buildwithfern.com/voximplant.docs.buildwithfern.com/77c44e07e74ef847190f30db5dd0235f9f545f530454c7e9102608a1e181c848/docs/assets/connectors/ultravox.svg" alt="Ultravox logo" />
    </span>

    <h3>
      Ultravox
    </h3>

    <p>
      Speech-native voice AI with examples for inbound, outbound, and tool-driven interactions.
    </p>

    <span>
      Inbound | Outbound | Function calling
    </span>
  </a>

  <a href="/voice-ai-connectors/elevenlabs-agents-voice-ai-connector/elevenlabs-agents-voice-ai-connector-overview">
    <span>
      <img src="https://files.buildwithfern.com/voximplant.docs.buildwithfern.com/24e2fe318bc1ed54a29ceb867e4ecead952355cda4241b07402d1ff6510dc133/docs/assets/connectors/elevenlabs.svg" alt="ElevenLabs logo" />
    </span>

    <h3>
      ElevenLabs Agents
    </h3>

    <p>
      Connect ElevenLabs conversational agents to PSTN, SIP, WebRTC, and WhatsApp call flows.
    </p>

    <span>
      Inbound | Outbound | Function calling
    </span>
  </a>

  <a href="/voice-ai-connectors/cartesia-line-agents-voice-ai-connector/cartesia-line-agents-voice-ai-connector-overview">
    <span>
      <img src="https://files.buildwithfern.com/voximplant.docs.buildwithfern.com/b1c1db2b7dd505edc9e5b049837f77d220d2ad09c536579ef644cd905ba78b21/docs/assets/connectors/cartesia.png" alt="Cartesia logo" />
    </span>

    <h3>
      Cartesia Line Agents
    </h3>

    <p>
      Line-agent runtime pattern for real-time calls, tool handling, and external business logic.
    </p>

    <span>
      Inbound | Outbound | Function calling
    </span>
  </a>

  <a href="/voice-ai-connectors/deepgram-voice-ai-connector/deepgram-voice-ai-connector-overview">
    <span>
      <img src="https://files.buildwithfern.com/voximplant.docs.buildwithfern.com/391f7d32e87f97489a3f409fc80a38bc8ef592617070e735055bfaa2c6e6f711/docs/assets/connectors/deepgram.svg" alt="Deepgram logo" />
    </span>

    <h3>
      Deepgram Agents
    </h3>

    <p>
      Deepgram Voice Agent integration with support for context history in ApplicationStorage.
    </p>

    <span>
      Inbound | Outbound | Function calling
    </span>
  </a>

  <a href="/voice-ai-connectors/grok-voice-ai-connector/grok-voice-ai-connector-overview">
    <span>
      <img src="https://files.buildwithfern.com/voximplant.docs.buildwithfern.com/07099f0e2eea46fe8cef6a2422dee63e1aa98c3cab07f3edf9a0b333314f758b/docs/assets/connectors/grok-x.svg" alt="xAI logo" />
    </span>

    <h3>
      Grok Voice Agent
    </h3>

    <p>
      xAI Grok real-time voice integration with examples for core calls and connector-specific features.
    </p>

    <span>
      Inbound | Outbound | Feature controls
    </span>
  </a>
</div>

## Common capabilities across connectors

* Route calls from PSTN, SIP, WebRTC, or WhatsApp through VoxEngine.
* Bridge call media to a provider connector in real time.
* Handle barge-in by clearing connector output when user speech starts.
* Implement tool/function execution for CRM actions, transfers, scheduling, or custom workflows.
* Store provider API keys in `ApplicationStorage` and keep examples production-safe.