You get 90 seconds with the President & CEO of Y Combinator. No do-overs, no slides, just you, a camera, and a countdown. Garry is a live LemonSlice avatar voiced by an OpenAI-powered LiveKit agent. He's not just listening, he's watching. Your camera feed streams through a WebSocket proxy for Interhuman's live social-signal analysis, so every trace of hesitation, every spike in conviction, gets caught in the moment it happens. When the clock hits zero, your full transcript and signal history are handed back to the agent, which delivers a structured reflection on whether the pitch actually landed.
YC Booth
Pitch your startup to an AI avatar for 90 seconds and recive honest feedback on your delivery.

About
Interhuman API
WSSwss://api.interhuman.ai/v1/stream/analyze
docsAPIs / Products
LiveKitLemonSliceOpenAI
Tech stack
Next.jsPythonWebSocket
Use case
Pitch practiceInteractive avatar
Type
Interactive demo
