Show HN: Factifi – Real-Time Fact-Checking Content

Posted by umittal10 on Friday July 25, 2025 @10:24PM
from the show-hn dept.

https://chromewebstore.google.com/detail/factifi-ai-powered-real-t/ancncpgncdaicilplhhenaonpljlfmll

Hi HN — we built Factifi, a Chrome extension that does instant fact-checking on anything you’re reading or watching. Please keep in mind, this is just an MVP and will be buggy and fail.

We were constantly pausing podcasts and Substack posts to ask, “Wait, is that actually true?”. After too many 30-minute Google rabbit holes, we decided to automate the work.

What it does

• Extracts claims from articles, blogs, YouTube videos (and even images) • Assigns a verdict + confidence score using live web search, a 200 M-paper research index, and a few proprietary datasets • Flags likely deepfakes and manipulated images • Runs entirely in your browser — only the claim snippets leave your machine for scoring

Status

• Free during early access (no wait-list) • Read more here (factifi.me/blog)

Looking for feedback on

• Accuracy thresholds (where should we draw “unverified” vs. “false”?) • UX friction — what feels clunky? • Ideas for new features

Happy to answer anything in the comments—thanks for taking a look!

( 22 comments | 6 points | on HN )

Re:Show HN: Factifi – Real-Time Fact-Checking Content by Klonoar on Friday July 25, 2025 @10:54PM (#44690913)

Can you expand more on what "proprietary datasets" means...? Where are the research papers pulled from?

Edit: it's also immediately obvious the number of brand new accounts that are engaging in the comments here with generic comments.

[ Parent | on HN ]

Re:Show HN: Factifi – Real-Time Fact-Checking Content by umittal10 on Friday July 25, 2025 @11:11PM (#44691013)

Okay, firstly you we use SEC and a few other datasets from Google and similar datasets. We filter them based on credibility. The research papers are pulled from a corpus called Semantic Scholar which is pretty high quality. We also do ArXiv and PubMed.

[ Parent | on HN ]

Re:Show HN: Factifi – Real-Time Fact-Checking Content by AddySmith2410 on Friday July 25, 2025 @10:41PM (#44690858)

Sounds interesting, can you tell me more about the claim generation?.

[ Parent | on HN ]

Re:Show HN: Factifi – Real-Time Fact-Checking Content by umittal on Friday July 25, 2025 @10:50PM (#44690888)

We use some peer reviewed methods to identify questionable claims.

[ Parent | on HN ]

Re:Show HN: Factifi – Real-Time Fact-Checking Content by ka2429 on Friday July 25, 2025 @10:48PM (#44690880)

Ferrari is losing coz of its strategy. Please fact check it

[ Parent | on HN ]

Re:Show HN: Factifi – Real-Time Fact-Checking Content by umittal on Friday July 25, 2025 @10:49PM (#44690882)

Sorry. They’re just ass.

[ Parent | on HN ]

Re:Show HN: Factifi – Real-Time Fact-Checking Content by slater on Friday July 25, 2025 @11:08PM (#44690994)

Can it also check "Show HN" posts with suspicious amounts of simple replies made by suspiciously-new user accounts?

[ Parent | on HN ]

Re:Show HN: Factifi – Real-Time Fact-Checking Content by umittal10 on Friday July 25, 2025 @11:45PM (#44691147)

lol we’re trying to prove that the internet is biased.

[ Parent | on HN ]

Re:Show HN: Factifi – Real-Time Fact-Checking Content by wredcoll on Saturday July 26, 2025 @12:06AM (#44691229)

Biased towards what is the far more important question

[ Parent | on HN ]

Re:Show HN: Factifi – Real-Time Fact-Checking Content by umittal10 on Saturday July 26, 2025 @12:41AM (#44691393)

Biased towards whatever the hell someone wants to portray. Truth is no longer displayed, what’s displayed is only what you want. HN is one of the better platforms and so you can tell. What about the others where bots dominate?

[ Parent | on HN ]

Re:Show HN: Factifi – Real-Time Fact-Checking Content by wredcoll on Saturday July 26, 2025 @01:23AM (#44691564)

I'd like it to be biased towards objective facts and not hurting people, how about that?

[ Parent | on HN ]

Re:Show HN: Factifi – Real-Time Fact-Checking Content by nonhaver on Saturday July 26, 2025 @12:48AM (#44691428)

ah man they got us. we thought it was spam when it was a social experiment all along. now look whos got egg on their face.

[ Parent | on HN ]

Re:Show HN: Factifi – Real-Time Fact-Checking Content by slater on Saturday July 26, 2025 @11:57AM (#44695037)

Astro-turfing your own Show HN post is not the way to go about it.

[ Parent | on HN ]

Re:Show HN: Factifi – Real-Time Fact-Checking Content by shrishti12 on Friday July 25, 2025 @10:46PM (#44690871)

Can it fact check articles, posts etc?

[ Parent | on HN ]

Re:Show HN: Factifi – Real-Time Fact-Checking Content by umittal on Friday July 25, 2025 @10:49PM (#44690884)

Yes. Please install. You can see it!

[ Parent | on HN ]

Re:Show HN: Factifi – Real-Time Fact-Checking Content by defrost on Saturday July 26, 2025 @12:20AM (#44691291)

What does it conclude about the full and complete comment histories of these three accounts?

* https://news.ycombinator.com/threads?id=ka2429

* https://news.ycombinator.com/threads?id=shrishti12

* https://news.ycombinator.com/threads?id=AddySmith2410

Is there are word to describe that behaviour?

[ Parent | on HN ]

Re:Show HN: Factifi – Real-Time Fact-Checking Content by umittal10 on Saturday July 26, 2025 @12:38AM (#44691380)

Thanks for proving our point for us. People will do whatever they want. Some of us are smart enough to check the truth, but most of us are not. There’s a need for fact checking and hopefully, people can come to a consensus on that.

[ Parent | on HN ]

Re:Show HN: Factifi – Real-Time Fact-Checking Content by aan85 on Saturday July 26, 2025 @12:55AM (#44691450)

How long does it take for a claim to be verified?

[ Parent | on HN ]

Re:Show HN: Factifi – Real-Time Fact-Checking Content by ab2345 on Saturday July 26, 2025 @01:09AM (#44691502)

Can it be integrated with social media platforms? Since that is where most misinformation is circulated

[ Parent | on HN ]

Re:Show HN: Factifi – Real-Time Fact-Checking Content by yerbamatte911 on Saturday July 26, 2025 @03:09PM (#44696293)

This is cool! Unique idea

[ Parent | on HN ]

Re:Show HN: Factifi – Real-Time Fact-Checking Content by mattwashere on Saturday July 26, 2025 @03:13PM (#44696314)

How is your model able to identify deepfaked images??

[ Parent | on HN ]

Re:Show HN: Factifi – Real-Time Fact-Checking Content by vstar2000 on Monday July 28, 2025 @07:23PM (#44717015)

Can users see why a claim was marked true/false — like a list of top supporting sources?

[ Parent | on HN ]