Particle launched Radar, a search engine for podcasts. It transcribes over 130,000 shows and understands their content.
Hedge funds are its highest-volume API customers.
AI agents cannot see audio, and Radar makes it accessible.
What happened
Particle, the AI newsreader startup founded by former Twitter engineers, introduced Radar, a podcast search engine that transcribes and understands audio to pull out key quotes and highlights. It transcribes more than 130,000 podcasts, including all Apple Top 200 podcasts across its 135 verticals, with 20,000 episodes added daily.
Why it matters
The product has attracted interest from hedge funds, which have been the highest-volume customers directly integrating with the API, according to CEO Sara Beykpour. AI agents are generally "blind to audio," so Radar provides a layer that makes spoken content accessible to them programmatically.
What to watch
Radar is priced at $29 a month per seat, with a $399-per-month plan for businesses that includes 20 seats. API users have custom pricing, and the company plans to expand beyond podcasts to support other audio forms such as YouTube videos and news clips.
Ask the AI about this article →
Particle's pivot from a consumer newsreading app to an API-first audio intelligence company reflects a growing market need. The company's original app sourced podcast clips using an API, and the team realized the value of that feature was trapped inside the news reader. With the rise of AI agents, they decided to build a dedicated API for podcast intelligence instead.
The core insight is that AI agents are primarily text-based and cannot process audio unless it has been transcribed. Radar aims to fill this gap by not only transcribing podcasts but also understanding entities and topics, extracting notable clips, and tracking mentions over time. Beyond search and alerts, it offers additional tools like podcast ads search, political bias analysis, chart rankings, audience size estimates, and sponsorship data, indicating multiple monetization avenues.
Radar's early traction with hedge funds suggests a strong demand for proprietary data sources that AI agents cannot access through standard web crawling. As the service expands to other audio forms like YouTube videos, it could become a broader layer of audio intelligence for AI systems and businesses.
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