Cuckoo

Cuckoo is a real-time AI interpreter built for global business conversations. Companies invite Cuckoo into Zoom calls or in-person meetings, and it delivers live translation across 20+ languages while learning each team's internal documents, glossaries, and jargon so technical sales, support, and marketing conversations don't lose meaning between languages. Founded in 2024 by KAIST alumni Yong Hee Lee and Gunwoo Kim, the company went through Y Combinator's Winter 2025 batch and raised a $1.8M seed round in 2025.