audio-ai
(3)
Kalpa Labs
Kalpa Labs is a San Francisco audio research lab building a generalist speech model - one system that handles speech-to-text, text-to-speech, voice cloning, and speech-in/speech-out reasoning with the kind of instruction-following and in-context learning that large language models brought to text. Founded in 2025 by ex-Google Assistant ML lead Prashant Shishodia and ex-high-frequency-trading engineer Gautam Jha, the company is a Y Combinator Fall 2025 startup aiming to collapse today's fragmented speech stack into a single, steerable model for developers and voice-agent builders.
Mixy
Mixy is a mobile app that lets anyone make music mashups in seconds - blending the vocals of one song with the beat of another, no DJ skills required. Powered by the founders' own on-device AI models, it produces real-time mixes for free and auto-credits the source artists on every share. Founded in 2025 by Joe Kennedy and Jonah Siegle and backed by Y Combinator's Fall 2025 batch, Mixy grew to 1.5M users and 18M mashups within three months of launch, hitting #1 in Music and #3 overall on the App Store.
Sensi.AI
Sensi.AI is a care intelligence company that uses ambient audio and AI to give home care agencies continuous visibility into the physical, cognitive, and emotional well-being of seniors aging at home. Founded in 2018 by Romi Gubes, Nevo Elmalem, and Alon Brener, the company deploys a discreet in-home audio device paired with an agentic platform that detects care anomalies, predicts risks, and recommends actions - aiming to close the visibility gap during the many hours seniors spend unsupervised. Sensi is trusted by roughly 80% of the largest home care networks in North America and has raised more than $98 million to date, including a $45 million Series C in October 2025.