You asked about Deepfake Detection
34 people built something like it. 7 are gone.
That is 22% of the ones whose fate we could settle, against 23% across the whole register. 2 were acquired.
| Launched | What it was | Today |
|---|---|---|
| 2021-06-01 | YCVerihubs AI-powered Deepfake Detection · verihubs.com | still up |
| 2022-01-01 | Enterprise Deepfake Detection · realitydefender.com | still up |
| 2024-01-01 | YCAedilic Open-Source AI-generated image/deepfake detection · nonescape.com | gone |
| 2021-03-14 | critter.camera | still up |
| 2021-08-07 | strayrobots.io | unverified |
| 2022-09-12 | ipdetective.io | still up |
| 2018-06-01 | YCInscribe AI Document Fraud Detection for Banks, Credit Unions & Lenders · inscribe.ai | still up |
| 2021-06-01 | YCAOA Dx Blood Test for Early Detection of Ovarian Cancer · aoadx.com | still up |
| 2016-01-01 | YCCastle Block bots & bad behavior · castle.io | still up |
| 2015-01-01 | YCX-Zell Early, pain-free cancer detection. · x-zell.com | still up |
| 2022-06-01 | Agentic Intelligence Layer for Merchant Risk Decisions · ballerine.com | still up |
| 2021-06-01 | YCSlope The B2B Payments Platform · slopepay.com | still up |
| 2024-06-01 | Drone detection for US defense and national security · guardianrf.com | still up |
| 2022-06-01 | Enterprise software for enterprise risk and cyber fraud intelligence · overwatchdata.ai | still up |
| 2022-11-29 | rf100.org | still up |
| 2023-12-31 | darkgen.app | unverified |
| 2015-01-01 | YCSmyte Smyte stops bad actors on social networks and marketplaces. · smyte.com | acquired |
| 2017-06-01 | YCDarmiyan Early detection of Alzheimer's disease · darmiyan.com | still up |
| 2023-08-08 | deepfakes.lol | gone |
| 2024-01-01 | YCIndemni Cargo Theft and Fraud Prevention Platform · indemni.com | still up |
| 2024-06-01 | Defect detection for manufacturing built from CAD and synthetic data. · bucket.bot | still up |
| 2021-04-11 | mylifefootball.com | gone |
| 2023-10-07 | checkfor.ai | gone |
| 2026-01-01 | YCMouseCat AI to fight financial crime · mousecat.ai | still up |
| 2023-01-16 | hackaday.io | still up |
| 2023-10-23 | isthat.ai | unverified |
| 2023-01-01 | YCFinic The AI fraud hunter · finic.ai | still up |
| 2023-01-01 | AI to increase payment acceptance and reduce fraud for businesses · corgilabs.ai | still up |
| 2016-01-01 | Diagnostic platform for early detection of liver disease · luministlabs.com | acquired |
| 2025-09-01 | YCHelonic Automatic Construction Drawing Clash Detection · helonic.com | still up |
| 2014-06-01 | YCBikanta Nano-diamonds for cancer detection · bikanta.com | gone |
| 2024-01-01 | Custom video detection models in less than 5 minutes · dragoneye.ai | still up |
| 2021-06-01 | Immediate stroke detection at home · zeitmedical.com | still up |
| 2026-09-01 | AI Claims Investigator for Insurance · gethesperai.com | still up |
| 2015-06-01 | Enterprise Threat Detection: Tuning, Triage, and Analysis by Experts. · traversalnetworks.com | gone |
| 2016-01-01 | YCSilver Low cost consumer device for toxin detection. · scansilver.com | gone |
| 2016-01-01 | Detect Gunshots | Inform Law Enforcement | Empower First Responders · amberbox.com | still up |
How this compares
Y Combinator reports its own outcomes, including acquisitions. The other two are judged by asking the domain, so they are not measured the same way and are never averaged together.
The register re-probes every domain it holds. Some that answered last month stop answering. We send that list — what went quiet, and what it was — once a month. Nothing else.
How this was made. Show HN entries are every post from 2021 to 2023 with at least five points that linked to its own domain; code hosts and free hosting are excluded, because a repository outlives the effort behind it. Product Hunt entries needed 100 votes — a far higher bar, so they are the promoted top slice rather than a like-for-like sample. Both are judged by asking the domain whether it still answers: gone means it no longer resolves, refuses the connection, serves a parking page, or says plainly that it shut down. An HTTP error is not counted as gone — a server answering 404 is one somebody still pays for, and an audit of 25 gone-calls found two such sites alive with only a moved homepage. Y Combinator entries use the status YC publishes itself, which is why only those can say acquired. Squatted domains — a lapsed name now serving somebody else's site — are not detected, so these figures run slightly low.