Berlin-based ai-coustics develops real-time speech enhancement technology for the voice AI era. Its flagship product, Quail, cleans and enhances speech in real time to boost automatic speech recognition accuracy, voice activity detection, and the reliability of voice agents and conversational AI. The platform processes millions of minutes weekly across 187 countries and 150+ languages and is used by companies including PolyAI, Synthesia, and Elgato. In 2025 the company raised a 5M euro seed round led by Partech to scale its developer platform and bring studio-quality sound to voice AI systems.