The problem
Building voice agents that respond instantly, scale to millions of calls and connect to phones is hard plumbing
What they do
Open-source framework and cloud for building real-time voice, video and physical AI agents
Traction $10M+ run rate in 2024 (CEO); 500+ paying customers incl. OpenAI, Salesforce, Tesla
Hiring trend
- Open roles
- 29
- Ops roles
- 4
- Headcount
- ~120-175
Headcount ~55 → ~117 Q1 2025 to Q1 2026 (Revelio), ~175 on LinkedIn (+165% YoY, est.); 28 open roles
Hiring in
- APJ
- San Francisco
- Remote (North America)
- Remote (US)
Latest news
Sep 2026
Acquired Loophole Labs (8-person infra team) to cut agent startup times under 3 seconds ↗Glassdoor
4.5 ★ 4 reviews ↗Funding
- Last round
- $100M
- Stage
- Series C
- Date
- Jan 2026
Led by Index Ventures (Series C); Altimeter (Series A/B)
- Hiring+1.529 open roles on the live job board (10–29 roles = +1.5)
- Funding recency+1.5Series C · $100M, Jan 2026 (9 months ago): 6–12 months = +1, $100M+ round +0.5
- Traction+0.75Some growth: $10M+ run rate in 2024 (CEO); 500+ paying customers incl. OpenAI, Salesforce, Tesla
- Red flags0None found in the last 24 months
- Total3.751.5 + 1.5 + 0.75 − 0 = 3.75 → Tempo (3.5–4.24)
Distance (Half) is a separate read on how long the lead can last. It doesn't change the score.
Distance
Half · edge: hard to leave
The default open-source stack for real-time voice agents (powers ChatGPT voice mode, Salesforce Agentforce voice, Tesla, ~25% of US 911 calls) with new inference, observability and simulation lines; revenue is still small and the AI labs ship their own realtime voice APIs.
Sources: TechCrunch: LiveKit powers OpenAI's Voice Mode, 500+ paying customers, $10M+ run rate (Apr 2025) ↗ · LiveKit blog: Series C, $100M at $1B led by Index (Jan 2026) ↗ · LiveKit blog: Agent Simulations GA (Oct 2026) ↗
Last checked Oct 25, 2026