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PARTICLE raises $15.3M total, Series A led by Lightspeed Founded by ex-Twitter engineers Sara Beykpour & Marcel Molina Partners include Reuters, Fortune & AFP Now on iOS, Android & the web Hallucination rate cut from 1-in-100 to 1-in-10,000 Personalized news, summarized. PARTICLE raises $15.3M total, Series A led by Lightspeed Founded by ex-Twitter engineers Sara Beykpour & Marcel Molina Partners include Reuters, Fortune & AFP Now on iOS, Android & the web Hallucination rate cut from 1-in-100 to 1-in-10,000 Personalized news, summarized.
Company Profile · AI & Media · San Francisco
Particle app logo
The Particle mark: a small orange nucleus, and the news orbiting it. Shot in the way you'd photograph a wild animal that has learned to sit still - patiently, and only after it trusts you.

Particle.

The news, summarized by AI - with every perspective, every quote, and every source still in the frame.

Founded 2023 Mina Labs, Inc. $15.3M raised ~19 people iOS · Android · Web
$15.3MTotal Funding
2Ex-Twitter Founders
3Platforms Shipped
100K+Podcasts Indexed
The Story

A News App With a Conscience

There is a familiar way that AI companies treat the news, and it goes roughly like this: take the reporting, digest it into a tidy answer, keep the reader on your own surface, and send the publisher who paid for the reporting approximately nothing. It is an efficient arrangement for everyone except the people doing the journalism. Particle, a startup out of San Francisco run under the corporate name Mina Labs, is built on the theory that this arrangement is not actually load-bearing - that you can summarize the news with AI and still hand the reader back to the newsroom that produced it.

This is a slightly unusual thing to believe, because the whole appeal of an AI summary is that you do not have to click anything. Particle's answer is to make the source links a feature rather than a footnote. Under each AI-generated summary it lists the outlets covering the story, sometimes highlighted in gold for partners, with journalist bylines shown as actual photographs of actual humans you can choose to follow. The bet is that a meaningful number of readers, having been told what a story is about, will want to know who is telling it - and go read them.

The people making this bet are worth noting. Sara Beykpour spent years at Twitter as a senior director of product management, shipping features you almost certainly used - Bookmarks, Safety tooling, the early video product. Marcel Molina was a senior engineer at both Twitter and Tesla. These are people who know exactly how to build an engagement machine, which makes it interesting that they built something with a feature literally named "stop doomscrolling."

"Having deep partnerships and collaboration is one of the things that we're really interested in."Sara Beykpour, Co-Founder & CEO

What Particle actually does, mechanically, is take a single news event - say, forty different articles about the same thing - and collapse them into one briefing. But the clever part is not the summarization; summarization is now a commodity. The clever part is the reformatting. There is an "Explain Like I'm 5" mode for stories you don't have the background for, a "Just the Facts" mode that gives you the five Ws with no editorializing, and an "Opposite Sides" view that lays the coverage out on a political spectrum so you can see, at a glance, that the left and the right are describing what appears to be two different events. There are audio summaries, translations into other languages, and an AI chatbot that will answer follow-up questions and fact-check as it goes.

The accuracy question is the one that should keep a news-AI founder up at night, because being wrong one percent of the time is fine for a chatbot and catastrophic for a news product. Particle's stated solution is to not rely on a single model - it reportedly routes across OpenAI, Anthropic, Cohere, and Google's systems - and the company says this pipeline dropped its error rate from something like one in a hundred to one in ten thousand. That is the difference between a party trick and a thing you would actually trust with the news.

The money has followed the thesis. Particle came out of stealth in early 2024 with $4.4 million in seed funding from Kindred Ventures and a roster of angels that included Ev Williams, the co-founder of Twitter and Medium, and Scott Belsky of Behance. A few months later it added a $10.9 million Series A led by Lightspeed, whose Michael Mignano - himself a former founder of the audio company Anchor - took a board seat. That is $15.3 million into a team of roughly nineteen people, which is a lot of conviction per employee.

Then came the partnerships that make the whole model coherent. Reuters, Fortune, and the newswire AFP signed on to have their content displayed with prominent source links, and Particle's broader coverage has surfaced outlets from TIME and Newsweek to The Atlantic and the San Francisco Chronicle. For a publisher weighing whether to cooperate with an AI product or sue it, Particle's proposition is unusually simple: we will show your name, your reporter, and your link, and we would like to send you the reader.

The product itself has spread out from where it started. Particle launched first as a free iPhone app, added Android, and in May 2025 arrived on the web at particle.news, with browsable categories - Technology, Politics, Science, Crime, Economics, even Video Games - and "entity pages" that assemble what's known about a person, company, or product in the news. Underneath the consumer app, the company also shipped a developer-facing Podcast Intelligence API that searches transcripts across more than a hundred thousand podcasts with speaker labels, which is the sort of infrastructure that suggests Particle sees itself as more than a single app.

Whether the publisher-friendly model wins is genuinely unsettled. The graveyard of news apps is well-populated - Artifact, from the founders of Instagram, shut down not long before Particle showed up - and "good for journalism" has historically been a weak business moat. But Particle is making a specific, testable claim: that in a market flooded with AI that treats reporting as raw material, the durable position is the one the newsrooms actually want to work with. It is a small company betting that being trustworthy is not a constraint on the product. It is the product.

What You Can Do With It

Read the News, Your Way

Perspective

Opposite Sides

See a story laid out across the political spectrum, so you can spot where coverage diverges before forming an opinion.

Clarity

Just the Facts

The five Ws - who, what, when, where, why - with the editorializing stripped out. The story, minus the spin.

Accessibility

Explain Like I'm 5

Simplified versions of complex stories, so a topic you have no background in is still readable in a minute.

Context

Key Quotes

Particle pulls the important quotes straight out of the reporting, with the source attached.

On the go

Audio & Translation

Listen to summaries hands-free, or read the day's news translated into your language.

Ask

AI Chatbot

Ask follow-up questions about any story and get fact-checked answers - without leaving the briefing.

The Founders

Built by People Who Built the Feed

Co-Founder & CEO

Sara Beykpour

Former senior director of product management at Twitter, where she led work on Bookmarks, Safety, and the early video product. She left to build a calmer, source-forward way to read the news.

Co-Founder & CTO

Marcel Molina

Former senior engineer at Twitter and Tesla. He built the multi-model pipeline that lets Particle summarize the news while keeping its error rate low enough to trust.

The Money

$15.3M, Two Rounds, One Thesis

Roughly $800K of funding per employee - a lot of conviction packed into a team of nineteen.

SEED · Mar 2024 · Kindred Ventures, Ev Williams, Scott Belsky$4.4M
$4.4M
SERIES A · Jun 2024 · Led by Lightspeed (Michael Mignano)$10.9M
$10.9M
Partnerships

The Newsrooms in the Frame

Content partners and outlets whose reporting Particle surfaces - with names, bylines, and links attached.

ReutersFortuneAFP TIMENewsweekThe Atlantic San Francisco ChronicleHouston Chronicle
The Timeline

From Stealth to the Web

2023

Mina Labs founded

Sara Beykpour and Marcel Molina leave Twitter to start the company behind Particle.

MAR 2024

Out of stealth with $4.4M seed

Particle emerges publicly, backed by Kindred Ventures and angels including Ev Williams.

JUN 2024

$10.9M Series A led by Lightspeed

The round adds publishing partners and puts Lightspeed's Michael Mignano on the board.

NOV 2024

Public app launch

Particle launches on iOS with Opposite Sides, Just the Facts, and prominent publisher links.

MAY 2025

Particle comes to the web

particle.news launches with browsable categories and entity pages, extending beyond mobile.

Watch & Listen

See It In Action

FAQ

The Questions People Ask

What is Particle?

Particle is an AI-powered news reader that summarizes stories from many sources, shows the political spread of coverage, extracts key quotes, and links prominently back to the publishers. It's available on iOS, Android, and the web at particle.news.

Who founded Particle?

It was founded in 2023 by Sara Beykpour, a former Twitter senior director of product management, and Marcel Molina, a former senior engineer at Twitter and Tesla, under the company Mina Labs, Inc.

How much funding has Particle raised?

About $15.3M total - a $4.4M seed round and a $10.9M Series A led by Lightspeed Venture Partners, both announced in 2024.

How is it different from other AI news apps?

Particle emphasizes supporting publishers: it surfaces and links to original sources, shows journalist bylines you can follow, and has content partnerships with Reuters, Fortune, and AFP - rather than scraping content without giving anything back.

Is Particle free?

Yes - the app is free on iOS and Android, and the web version at particle.news is publicly accessible. The company also offers a developer-facing Podcast Intelligence API.

Connect

Find Particle