generative-video
(3)
Craze
Craze is a Y Combinator (S22) company that reinvented itself into an AI video maker at craze.ai - a tool that plans, edits and turns creative direction into finished videos. Founded in 2022 by Kabir Nagral and Deepit Patil, Craze began as an HR, payroll and compliance platform for Indian founders before shutting that product down in 2025 and rebuilding around AI, first as a general 'do things with AI' agent layer and now as a creative video studio.
Yarn (YC W24)
Yarn is an AI-native platform that lets go-to-market teams make agency-quality product, sales, and marketing videos in minutes instead of weeks. Founded during Y Combinator's Winter 2024 batch by Jasper Story and Nicole Atack, Yarn treats video like a document: you write a script, and its stack of AI tools handles voiceovers, screen recordings, part-synthetic talking heads, brand-styled overlays, and generative footage. The pitch is speed and cost - videos that would take an agency weeks and thousands of dollars, produced in-house in under 20 minutes.
Decart
Decart is a frontier AI lab building real-time world models and the low-latency infrastructure that runs them. Its systems - Oasis, Lucy and the DOS optimization stack - generate and transform live video at millisecond latency, turning video games, livestreams and cameras into promptable, interactive worlds.