pipecat-ai · markbackman · Dec 29, 2025
diff --git a/server/services/s2s/grok.mdx b/server/services/s2s/grok.mdx
@@ -0,0 +1,67 @@
+---
+title: "Grok Realtime"
+description: "Real-time speech-to-speech service implementation using xAI's Grok Voice Agent API"
+---
+
+## Overview
+
+`GrokRealtimeLLMService` provides real-time, multimodal conversation capabilities using xAI's Grok Voice Agent API. It supports speech-to-speech interactions with integrated LLM processing, function calling, and advanced conversation management with low-latency response times.
+
+<CardGroup cols={2}>
+  <Card
+    title="Grok Realtime API Reference"
+    icon="code"
+    href="https://reference-server.pipecat.ai/en/latest/api/pipecat.services.grok.realtime.llm.html"
+  >
+    Pipecat's API methods for Grok Realtime integration
+  </Card>
+  <Card
+    title="Example Implementation"
+    icon="play"
+    href="https://github.com/pipecat-ai/pipecat/blob/main/examples/foundational/51-grok-realtime.py"
+  >
+    Complete Grok Realtime conversation example
+  </Card>
+  <Card
+    title="Grok Voice Documentation"
+    icon="book"
+    href="https://docs.x.ai/docs/guides/voice"
+  >
+    Official xAI Grok Voice Agent API documentation
+  </Card>
+  <Card title="xAI Console" icon="external-link" href="https://console.x.ai/">
+    Access Grok models and manage API keys
+  </Card>
+</CardGroup>
+
+## Installation
+
+To use Grok Realtime services, install the required dependencies:
+
+```bash
+pip install "pipecat-ai[grok]"
+```
+
+## Prerequisites
+
+### xAI Account Setup
+
+Before using Grok Realtime services, you need:
+
+1. **xAI Account**: Sign up at [xAI Console](https://console.x.ai/)
+2. **API Key**: Generate a Grok API key from your account dashboard
+3. **Model Access**: Ensure access to Grok Voice Agent models
+4. **Usage Limits**: Configure appropriate usage limits and billing
+
+### Required Environment Variables
+
+- `XAI_API_KEY`: Your xAI API key for authentication
+
+### Key Features
+
+- **Real-time Speech-to-Speech**: Direct audio processing with low latency
+- **Multilingual Support**: Support for multiple languages
+- **Voice Activity Detection**: Server-side VAD for automatic speech detection
+- **Function Calling**: Seamless support for external functions and tool integration
+- **Multiple Voice Options**: Various voice personalities available
+- **WebSocket Support**: Real-time bidirectional audio streaming
diff --git a/server/services/s2s/ultravox.mdx b/server/services/s2s/ultravox.mdx
@@ -0,0 +1,71 @@
+---
+title: "Ultravox Realtime"
+description: "Real-time speech-to-speech service implementation using Ultravox's Realtime API"
+---
+
+## Overview
+
+`UltravoxRealtimeLLMService` provides real-time conversational AI capabilities using Ultravox's Realtime API. It supports both text and audio modalities with voice transcription, streaming responses, and tool usage for creating interactive AI experiences.
+
+<CardGroup cols={2}>
+  <Card
+    title="Ultravox Realtime API Reference"
+    icon="code"
+    href="https://reference-server.pipecat.ai/en/latest/api/pipecat.services.ultravox.llm.html"
+  >
+    Pipecat's API methods for Ultravox Realtime integration
+  </Card>
+  <Card
+    title="Example Implementation"
+    icon="play"
+    href="https://github.com/pipecat-ai/pipecat/blob/main/examples/foundational/50-ultravox-realtime.py"
+  >
+    Complete Ultravox Realtime conversation example
+  </Card>
+  <Card
+    title="Ultravox Documentation"
+    icon="book"
+    href="https://docs.ultravox.ai/overview"
+  >
+    Official Ultravox API documentation
+  </Card>
+  <Card
+    title="Ultravox Console"
+    icon="external-link"
+    href="https://app.ultravox.ai/"
+  >
+    Access Ultravox models and manage API keys
+  </Card>
+</CardGroup>
+
+## Installation
+
+To use Ultravox Realtime services, install the required dependencies:
+
+```bash
+pip install "pipecat-ai[ultravox]"
+```
+
+## Prerequisites
+
+### Ultravox Account Setup
+
+Before using Ultravox Realtime services, you need:
+
+1. **Ultravox Account**: Sign up at [Ultravox Console](https://app.ultravox.ai/)
+2. **API Key**: Generate an Ultravox API key from your account dashboard
+3. **Model Access**: Ensure access to Ultravox Realtime models
+4. **Usage Limits**: Configure appropriate usage limits and billing
+
+### Required Environment Variables
+
+- `ULTRAVOX_API_KEY`: Your Ultravox API key for authentication
+
+### Key Features
+
+- **Audio-Native Model**: Ultravox is an audio-native model for natural voice interactions
+- **Real-time Streaming**: Low-latency audio processing and streaming responses
+- **Multiple Input Modes**: Support for Agent, One-Shot, and Join URL input parameters
+- **Voice Transcription**: Built-in transcription with streaming output
+- **Function Calling**: Support for tool integration and API calling
+- **Configurable Duration**: Set maximum call duration limits
diff --git a/server/services/supported-services.mdx b/server/services/supported-services.mdx
@@ -51,7 +51,6 @@ Speech-to-Text services receive and audio input and output transcriptions.
 | [Sarvam](/server/services/stt/sarvam)                 | `pip install "pipecat-ai[sarvam]"`       |
 | [Soniox](/server/services/stt/soniox)                 | `pip install "pipecat-ai[soniox]"`       |
 | [Speechmatics](/server/services/stt/speechmatics)     | `pip install "pipecat-ai[speechmatics]"` |
-| [Ultravox](/server/services/stt/ultravox)             | `pip install "pipecat-ai[ultravox]"`     |
 | [Whisper](/server/services/stt/whisper)               | `pip install "pipecat-ai[whisper]"`      |
 
 ## Large Language Models
@@ -118,7 +117,9 @@ Speech-to-Speech services are multi-modal LLM services that take in audio, video
 | [AWS Nova Sonic](/server/services/s2s/aws)                       | `pip install "pipecat-ai[aws-nova-sonic]"` |
 | [Gemini Multimodal Live](/server/services/s2s/gemini-live)       | `pip install "pipecat-ai[google]"`         |
 | [Gemini Live Vertex AI](/server/services/s2s/gemini-live-vertex) | `pip install "pipecat-ai[google]"`         |
+| [Grok Voice Agent](/server/services/s2s/grok)                    | `pip install "pipecat-ai[grok]"`           |
 | [OpenAI Realtime](/server/services/s2s/openai)                   | `pip install "pipecat-ai[openai]"`         |
+| [Ultravox](/server/services/stt/ultravox)                        | `pip install "pipecat-ai[ultravox]"`       |
 
 ## Image Generation