Particle, an AI newsreader startup, introduced Radar on Wednesday. The platform transcribes and analyzes more than 130,000 podcasts, including all Apple Top 200 podcasts across 135 verticals, adding 20,000 episodes daily. Radar provides speaker labels, rich metadata, entity tracking (people, companies, topics), and customizable alerts. Its API and MCP allow AI agents and businesses, including hedge funds, to programmatically access this audio intelligence, with hedge funds being the highest-volume customers directly integrating with the API.