Bolna

Bolna is an open-source platform for building, testing, and deploying AI voice agents that hold natural phone conversations, handling pauses and interruptions across inbound and outbound calls. The agents answer calls around the clock, book appointments, qualify leads, screen candidates, and provide customer support, with call transcripts and performance analytics. It orchestrates speech-to-text, LLM, and text-to-speech providers over telephony services like Twilio and Plivo, supports 40+ languages including Indian vernaculars, and can run at scale via hosted APIs or self-hosting.