Sekai

Sekai is a San Francisco Bay Area consumer platform where anyone can build software just by describing it. Users type a prompt and get a playable, shareable mini-app - a game, quiz, utility, poll or interactive story - in seconds, then play, remix and share what others make. Founded in 2024 by serial entrepreneur Lucky Zhang, Sekai (Japanese for 'world') began as an AI anime fan-fiction tool and pivoted into general-purpose app creation as AI coding models improved. By mid-2026 users had created more than 15 million mini-apps, with roughly 200,000 new ones a day, and the company had raised about $26 million across Seed and Series A rounds from Khosla Ventures, Connect Ventures, a16z speedrun, Mayfield and others.