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Praktika develops an AI-powered language learning app using generative AI avatars for conversational practice, serving over two million monthly active users globally.
Sekai
Sekai runs an AI platform where users create, play, remix and share mini-apps and games from natural-language descriptions, with over 5 million downloads.
Sekai is an AI-powered interactive content platform founded in 2024 and headquartered in Sunnyvale, California. Users describe what they want in natural language and the system builds interactive apps, games, quizzes and stories that can be played, remixed and shared immediately. The company describes the product as a category of social entertainment akin to a feed for mini-apps, and reports more than 5 million downloads.
The engineering work spans several domains: AI-powered content generation, generative and no-code app creation, natural language interfaces, and interactive media and gaming. A core design principle is that creators build without writing any code. The Remix feature lets users take an existing creation, alter its themes or rules and publish their own version, so the platform is built around user-generated content and remix culture.
Sekai raised a $30 million Series A and counts a16z, Khosla, Mayfield and A* among its investors. It operates as an AI-native company in the social entertainment, gaming, interactive media and AI content creation verticals.
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