CEO Tobi Lütke of Shopify recently tweeted, “Sesame's voice model is absolutely insane.” Sesame’s AI voices are turning heads—and for good reason. Shopify CEO Tobi Lütke called them “absolutely insane,” and anyone who’s tried the demo seems to agree. Unlike traditional AI speech, which often feels robotic and flat, Sesame’s models breathe, pause, and even throw in casual filler words like “like” and “you know.” The result? Conversations that sound human.
Founded by Brendan Iribe, Ankit Kumar, and Ryan Brown, Sesame backed by Andreessen Horowitz, is betting big on a bold idea that the future of AI isn’t in screens, it’s in sound.
Sesame’s AI technology is the Conversational Speech Model (CSM-1B), a 1-billion-parameter system designed to generate nat
