What is Particle?
Particle is a personalized AI news reader founded in 2023 by Sara Beykpour, former senior director of product at Twitter, and Marcel Molina, a former senior engineer at Twitter and Tesla. The app clusters articles from many outlets into unified 'stories,' generates concise AI summaries and quick bullet takeaways, and shows how coverage differs across perspectives — helping readers get up to speed in seconds while linking prominently back to original publishers.
Publisher-friendly AI news
Unlike aggregators accused of strip-mining journalism, Particle positions itself as a partner to publishers, surfacing citations and driving traffic to sources — it launched with support from outlets including Reuters, Fortune, and AFP. Features include Discover feeds by topic, follow-up Q&A on any story, timelines of how events unfolded, and both iOS, Android, and web apps. It also offers a Podcast Intelligence API for searching podcast transcripts.
Funding
Particle raised $4.4M in seed funding from Kindred Ventures and Adverb Ventures, followed by a $10.9M Series A led by Lightspeed with participation from Ev Williams, Scott Belsky, and Axel Springer — bringing total funding to $15.3M.