Hyperbound

Hyperbound is a San Francisco-based AI sales roleplay and coaching platform that turns real customer-call patterns into lifelike AI buyer simulations, letting sales teams practice cold calls, discovery, and objection-handling at scale. Founded in 2023 by Sriharsha Guduguntla and Atul Raghunathan, the Y Combinator-backed company raised a $15M Series A in September 2025 led by Peak XV Partners.