> ## Documentation Index > Fetch the complete documentation index at: https://developers.telnyx.com/llms.txt > Use this file to discover all available pages before exploring further. # What is Conversational AI? > Introduction to Telnyx Conversational AI — what it is, how STT, LLM, and TTS work together, and how to launch a voice agent that handles real phone calls. Conversational AI enables machines to understand, interpret, and respond naturally to human language. At Telnyx, Conversational AI merges cutting-edge telecommunications infrastructure with advanced AI capabilities, delivering seamless, ultra-low-latency voice interactions. ## Core technologies * **Real-Time Media Streaming**: Telnyx's global private MPLS network combined with WebSocket technology streams raw audio instantly, ensuring high-quality, real-time voice conversations with minimal latency. * **Speech-to-Text (STT)**: Converts real-time live audio streams into text for immediate processing. * **Large Language Models (LLMs)**: Advanced AI models interpret language and generate accurate, context-sensitive responses. You can use pre-trained models or customize your own. * **Text-to-Speech (TTS)**: Transforms AI-generated text responses into realistic, human-like speech instantly streamed back to users. ## How It Works We control every aspect—from network infrastructure to GPU-accelerated AI processing—to provide unmatched reliability, speed, and security. Telnyx Conversational AI operates through a fully integrated, bi-directional real-time streaming process: 1. **Capture voice input**: User speech is instantly captured and transmitted securely to Telnyx servers using WebSocket. 2. **Speech-to-Text processing (speech recognition)**: Immediate transcription of audio into text happens directly on Telnyx's edge-based GPUs. 3 **AI-Driven Response Generation**: AI analyzes user intent and generates context-aware responses. 3. **Text-to-Speech output**: The AI-generated responses are converted into natural speech and streamed back instantly to the user. This integrated pipeline ensures smooth, natural conversational experiences with ultra-low latency. Telnyx Conversational AI Diagram ## Models & Supported Languages Telnyx provides flexible AI model options tailored to specific business needs: * **Pre-trained models**: Optimized models for diverse conversational use cases are available immediately. Telnyx List of Models * **Custom AI Models**: Fully customizable models tailored to specific industry requirements. * **Languages and voices**: TTS provider coverage is model-dependent. The available TTS voice catalog includes 3,800+ voices across 80+ language families and 200+ language or locale codes. Speech-to-text language coverage depends on the selected transcription model. ## Popular Use Cases * **AI-Powered Customer Support**: Automate and enhance customer service interactions. * **Virtual Assistants & Intelligent IVR**: Create intelligent virtual agents for natural, real-time user interactions. * **Real-Time Transcription & Insights**: Instantly convert spoken conversations to text and gain actionable insights. * **Call Center Automation**: Increase efficiency, reduce operational costs, and improve customer experiences through AI automation.