LiveKit AI Voice Assistant is a futuristic, real-time voice-powered AI built on LiveKit Agents, blending powerful speech processing with intelligent task automation. It is designed to speak, listen, understand, and act — creating a fully interactive AI experience that goes beyond just text.
Whether you're building smart customer support, personal productivity agents, or voice-first applications, this project shows how to combine AI + real-time voice + tools in a unified, scalable solution.
This voice assistant listens in real time, understands natural language via GPT-based LLMs, and responds with human-like speech — all while being capable of real-world actions like:
- 🌦️ Getting Live Weather from any city
- 🌐 Searching the Web using DuckDuckGo via LangChain
- 📧 Sending Emails with your Gmail account
- 🧠 Conversing Smartly using GPT-4o-mini or Google Realtime models
- 🗣️ Real-Time Voice Communication via Silero STT + TTS
- 🕵️ Multilingual Turn Detection for natural conversation flow
- 🔇 Noise Cancellation for crisp and clean audio
- 🎤 Voice Activity Detection to smartly manage when to speak and listen
| Feature | Tech Used |
|---|---|
| Voice Transmission | LiveKit |
| LLM / Reasoning | GPT-4o-mini or Google Realtime |
| Speech-to-Text (STT) | Silero |
| Text-to-Speech (TTS) | Silero, Google Voices |
| Noise Cancellation | LiveKit BVC |
| Voice Activity Detection (VAD) | Silero VAD |
| Turn Detection | LiveKit Multilingual Turn Detector |
| Web Search | DuckDuckGo via LangChain |
| Email Sending | Gmail SMTP + App Password |
| Weather API | wttr.in |
| Tool Framework | LiveKit Function Tools + LangChain |
This project brings voice interfaces closer to real-world usability by combining AI reasoning, multimodal capabilities, and actionable tools. It's more than just a virtual assistant — it's a programmable voice agent you can embed into apps, use for automation, or evolve into a fully custom AI support system.
Ideal for:
- 🌐 Voice-enabled apps & platforms
- 🤖 Virtual agent research
- 📞 Smart call assistants
- 🧑💼 Personal AI companions
- 🏢 Voice agents for enterprise workflows
Test or extend this voice agent in the LiveKit Playground — a real-time environment where your agent comes to life through voice.
While setup steps are not shown here, the project securely uses
.envfor your API keys and credentials including:
GMAIL_USERGMAIL_APP_PASSWORD- Any LLM or LiveKit API tokens you might need
This assistant was built with modularity and scale in mind. Every component — from email to search to speech — is a plug-and-play function tool, allowing developers to swap in better APIs or add new capabilities on the fly.
Welcome to the future of voice-native AI.