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LiveKit
Unicorn · $1BSan Jose, US · 7 known investors
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LiveKit provides developer infrastructure for building voice, video, and AI agent applications using real-time communication APIs and tools. The platform serves developers, AI labs, robotics companies, and enterprises building interactive AI systems.
Also known as LiveKit Cloud · LiveKit, Inc.
Founders & leadership
Investors · 7
How we know: a partner's Signal profile · funding news · blog.livekit.io · open dataset · 5k.vc investor directory · Not right? Tell us
How we know: Index Ventures's portfolio page · superbcrew.com · funding news · open dataset · 5k.vc investor directory · Not right? Tell us
How we know: Redpoint Ventures's portfolio page · a partner's Signal profile · board seat on SEC Form D · funding news · blog.livekit.io · open dataset · 5k.vc investor directory · Not right? Tell us
How we know: funding news · blog.livekit.io · open dataset · 5k.vc investor directory · Not right? Tell us
How we know: funding news · blog.livekit.io · Not right? Tell us
Funding
SEC filings, press & company announcements$100M disclosed across 1 of 4 rounds · 2025–2026
- $100MSeries CJan 2026 · 5 sources
Index Ventures (lead), Altimeter, Hanabi Capital, Redpoint Ventures, Salesforce Ventures
Source ↗ - Undisclosed amountSeries BApr 2025 · 2 sourcesSource ↗
Source: company announcements and press reports — follow each round's link for the claim.
Valuation · disclosed
Disclosed eventsSource: SEC prospectus filings, and round valuations the company or its investors disclosed — follow each entry's link for the claim.
Company profile
researched Aug 2026LiveKit provides an open source framework and developer platform for building realtime AI agents that interact with users through voice, video, and robotics interfaces. The stack covers agent development and testing, an inference gateway for accessing speech-to-text, text-to-speech, and large language model providers, cloud deployment and scaling of agents, telephony via phone numbers and SIP integrations, and full-stack observability for agent sessions.
In a typical LiveKit deployment, a user speaks to an agent through a web app, mobile app, browser, or phone call; the speech is streamed from the device to the agent, which runs the developer's custom business logic and responds back to the user. The platform advertises automatic turn detection and interruption handling, support for millions of concurrent calls, and SDKs including Python and Node.js, with quickstart paths for voice agents, starter web and mobile apps, telephony integration, and deployment to LiveKit Cloud.
Business model
LiveKit combines an open source agents framework with a commercial hosted offering, LiveKit Cloud, which runs and scales customer agents on LiveKit's global realtime infrastructure and provides related services such as model inference access, telephony phone numbers and SIP connectivity, and session observability.
Traction
The company reports powering billions of calls in production annually, a developer community numbering in the thousands, and multi-region global infrastructure. Named customers and referenced users include OpenAI (ChatGPT Advanced Voice built on LiveKit Cloud), Podium, Retell AI, Playback, Assort Health, Spara, and robotics company Polymath.
▸Full profile — market position, technology, go-to-market, geography
Market position
LiveKit positions itself as the complete stack for voice AI, citing use by OpenAI for ChatGPT's Advanced Voice mode, more than 2.5 billion calls annually on its platform, and enterprise compliance attestations covering GDPR, SOC 2 Type 2, and HIPAA.
LiveKit emphasizes model-agnostic flexibility and granular control over agent code with any model provider, combined with managed scaling and production-ready realtime infrastructure, so teams can avoid maintaining their own realtime stack while retaining customization.
Technology
Core technology covers realtime audio and video transport and agent orchestration. The agents framework composes pipelines from third-party models (examples cited include Deepgram speech-to-text, Google LLMs, and Cartesia text-to-speech) together with a multilingual turn-detection model for automatic end-of-turn detection and interruption handling. Client and server SDKs are offered for Python and Node.js, alongside web and mobile app starter kits and SIP-based telephony integration.
Go-to-market
Developer-led distribution through an open source framework, public documentation, quickstart guides and starter apps, GitHub presence (livekit/agents), and educational content, including a course on building AI voice agents for production created in collaboration with LiveKit and taught in part by its co-founder and CEO; commercial conversion occurs via LiveKit Cloud.
Developers and engineering teams building voice AI, video AI, and robotics applications, ranging from startups to large enterprises, including healthcare, sales and go-to-market, and robotics use cases.
Geography
LiveKit Cloud lists regional infrastructure across Australia, Brazil, Canada, France, Germany, India, Israel, Japan, Saudi Arabia, Singapore, South Africa, the UAE, and multiple United States regions (US Central, US East, US West).
Compiled by commissioned research from 9 cited public sources — announcements, filings, and press listed under research sources below.
Key figures
latest reportedCompany-reported or press-reported figures, each dated to when it was claimed — not independently audited.
Founder mafia
2 people who came through LiveKit went on to found or lead other companies.
Timeline · 9
launches, deals, and filingsAnnounced in the LiveKit community forum announcements section.
Community announcement titled 'Making Voice Agents sound human with Expressive Mode'.
Index Ventures led a $100M round at a $1 billion valuation, joined by Salesforce Ventures, Hanabi Capital, Altimeter and Redpoint Ventures. TechCrunch notes the round came 10 months after the previous fundraise.
$100M source ↗
LiveKit partnered with telephony carriers worldwide to link its network directly to the PSTN for lower-latency phone conversations with voice agents.
Partnerships to support simulation-based evaluation in which a voice agent calls another voice agent across thousands of permuted conversations.
Browser-based tool to start agents from a template, tune prompts, sketch workflows and share links, described as recently launched in the January 2026 Series C post.
Gateway that abstracts model orchestration by routing inference between TTS/LLM/STT providers and LiveKit-hosted models colocated with agents.
LiveKit announced its Series B in April 2025, per the company's Series C blog post.
Turnkey agent deployment released 'earlier this year' per the January 2026 Series C announcement.
Dated company events from announcements, filings, and press; legal rows summarize public dockets and regulator releases.
In the news
Frequently asked questions
- What does LiveKit do?
- LiveKit is an open source framework and cloud platform for building, deploying, and scaling voice, video, and physical AI agents.
- Who founded LiveKit?
- LiveKit was founded by Russ d'Sa.
- Who are LiveKit's investors?
- LiveKit's investors include Deep Acre, Founders, Hanabi Capital, Index Ventures, Redpoint Ventures, Altimeter Capital, Salesforce Ventures.
- How much funding has LiveKit raised?
- LiveKit has disclosed $100M raised across 1 of its 4 known rounds.
- Where is LiveKit headquartered?
- LiveKit is headquartered in San Jose, US.