Smallest.ai Raises $21M to Build Voice 4.0, the Next Generation of Enterprise Voice AI

Smallest.ai, a San Francisco-based AI research lab, announced it has surpassed $21 million in total funding after closing a $13 million Series A led by Seligman Ventures. The company introduced Voice 4.0, an architecture built around its Hydra speech-to-speech model, which aims to reduce latency by processing listening, reasoning, action, and response in parallel. Customers like RingCentral and Truecaller use the platform to automate voice workflows, reducing support costs by up to 80%.