LiveKit, the developer platform for voice, video, and physical AI agents, today announced it has raised a $100 million Series C at a $1 billion valuation. The round was led by Index Ventures, with participation from new investor Salesforce Ventures, as well as returning investors Altimeter Capital, Redpoint Ventures, and Hanabi Capital.
LiveKit provides both the software frameworks for building and cloud infrastructure for running AI agents that can see, hear, and speak in real time, powering voice AI applications for OpenAI, xAI, Salesforce, Coursera, Spotify, and thousands of others, collectively facilitating billions of calls each year. The new funding will serve to expand LiveKit’s platform across new compute, storage, and network services purpose-built for the coming paradigm shift in computing, from chat-based interfaces to those driven by voice and computer vision.
“The way humans interact with computers is changing,” said Russ d’Sa, co-founder and CEO of LiveKit. “Voice is the most natural interface, and it will power everything from intelligent assistants to AI agents that perform real work in both the digital and physical worlds. Building these kinds of AI applications requires novel infrastructure that supports things like low-latency audio streaming, load balancing of stateful workloads, efficient routing between several AI models, and granular conversational observability. As a complete stack for building voice AI applications — both the agent and frontend — LiveKit provides all these things and more.”
LiveKit offers an open-source framework for building voice and video agents, a global edge network optimized for sub-100ms latency, and a complete runtime for deploying and scaling stateful AI workloads. With more than 200,000 developers and customers ranging from leading AI labs to Fortune 500 companies, LiveKit is increasingly becoming the default infrastructure layer for teams building AI that can interact with the world in real time.
“LiveKit is defining a new category of infrastructure,” said Sahir Azam, partner at Index Ventures. “Voice and real-time AI are transforming how businesses operate, creating a massive market opportunity. Russ and co-founder David Zhao bring rare systems depth paired with exceptional product instinct, and we have deep conviction in them as founders. That combination uniquely positions LiveKit to become a foundational platform for the next era of computing.”
In addition to its institutional investors, LiveKit is supported by a group of prominent AI leaders, including Elad Gil, Jeff Dean, and the CEOs of Perplexity, Replit, Vercel, and ElevenLabs. For more from Russ d’Sa in his own words, visit the LiveKit blog.
About LiveKit
LiveKit is an end-to-end platform that gives developers everything they need to build and scale voice, video, and physical AI agents. Based in San Francisco, California, LiveKit powers some of the most used AI applications in the world. For more information, visit livekit.io.
