Sitemap

Talk To AI with FastRTC: Real-Time Voice Conversations with AI

3 min readMar 10, 2025

--

Talk To AI (Image generated by https://huggingface.co/spaces/stabilityai/stable-diffusion-3.5-large)

My Offer: Would you pay $1/month to Own Your AI Data?
My Quest: How I Built My Own AI Server (and Why)

Text-Based AI Chat is Cumbersome

While AI chatbots have become an integral part of modern interactions, they are still primarily text-based. Typing and reading responses can be slow and inefficient, especially for users who want a more natural and engaging experience. The delay in text-based exchanges disrupts the flow of conversation, making AI interactions feel robotic rather than intuitive.

Real-Time Voice Conversations with AI

Talk To AI with FastRTC transforms AI chat into a seamless voice-driven experience. Using real-time speech-to-text (STT), LLM text generation (LLM), and text-to-speech (TTS) synthesis, this project enables users to talk naturally with AI models. By integrating WebRTC, latency is minimized, making interactions as fluid as a real conversation.

Modular Design with Local/Cloud Options

The project is designed with flexibility in mind, supporting both local AI models and cloud-based APIs with OpenAI-compatible API. Its modular architecture consists of:

System Flow

Local API Options: Several Choices Available

For users who prefer privacy and offline capabilities, Talk To AI supports multiple local AI APIs:

Cloud API Options: Leading Providers Supported

For users who want scalability and high-performance AI models, the project seamlessly integrates with cloud services that offer OpenAI-compatible APIs. The following providers have been tested:

Key Features

🔹API Flexibility

Switch between local and cloud APIs by updating the .env configuration.

🎤Real-Time Voice Interaction

Enjoy low-latency AI conversations via WebRTC-based voice streaming.

⚡ Reduced Latency with Streaming TTS

The system plays back AI-generated speech progressively, sentence by sentence, ensuring a natural conversational flow.

🎨 Customizable Voice and UI

Users can adjust voice settings, model choices, and the web interface for a personalized experience.

🎭 Voice Customization
Modify the .env file to adjust voice model, voice type and audio format:

TTS_MODEL="tts-1-hd"
TTS_VOICE="en-US-AriaNeural"
TTS_AUDIO_FORMAT="pcm"

💡 UI Customization
The web interface ( index.html) is fully customizable, allowing developers to adjust layout, styling, and audio visualizations.

Imagine integrating this project with the UI of Amica:

Or if you prefer a realistic face over a 3D model:

That would be fun!

Get Started

Clone the repository, install dependencies, configure the .env file, and run the application. Within minutes, you'll be ready to start real-time AI voice conversations.

With Talk To AI with FastRTC, interacting with AI feels as natural as talking to another person. Experience real-time, voice-driven AI today! 🚀

--

--

Lim Chee Kin
Lim Chee Kin

Written by Lim Chee Kin

Business-minded full-stack engineer with hands-on experience in AI, Java, Python, Flutter, and NextJS. Passionate about DApps, Online Marketing and Metaphysics.

Responses (2)