The YC Company Making AI Speak Every Language: Mundo AI (YC W25)

We talk with Kenneth Wu, co-founder of Mundo AI (YC W25) — the company on a mission to make AI truly multilingual.

Most large language models are trained mainly on English data, leaving billions of people underrepresented. Mundo AI is changing that by building high-quality multilingual datasets that help AI models understand and perform across the world’s languages — from Hindi and Arabic to Swahili and beyond.

Kenneth shares how his team works directly with native speakers, builds scalable data-collection pipelines, and ensures cultural and linguistic accuracy that machine-translation shortcuts can’t achieve. We also dive into what it takes to make AI global, why it matters for the next generation of models, and the opportunities ahead for multilingual AI.