YC Roaster

Hall of Roasts

The most brutal and funniest YC application roasts of the month, picked by AI from hundreds of submissions. Updated on the 1st of every month.

Apr 4 – May 4, 2026

Most Brutal 🔥

Funniest 😂

#1
Countify
Self-service platform for researchers to create custom AI vision copilots for lab work using just 5 images, no code.
8.0
You have 8 pilots and 100% say they'll pay, but your revenue is still zero, willingness to pay is not a business model.

Rare founder-market fit and fast execution, but you need 10 paying customers to prove this scales beyond pilots.

Why featured: 'Willingness to pay is not a business model' is the perfect screenshot-worthy zinger.

#2
Sharpsana
AI coworker with company memory that connects to your tools like Slack, Jira, and Notion to answer questions and execute tasks.
6.7
15 users and zero revenue after 3 months full time means you either haven't tried to charge or nobody will pay, both are fatal.

You can clearly ship product, but until someone pays you real money, this is just an impressive demo with no business model.

Why featured: 'Impressive demo with no business model' lands as both funny and devastating.

#3
ArbLens
Real-time merger arbitrage deal tracker that extracts terms from public filings into dashboards.
6.3
You built a working product in a month but have zero revenue, no usage metrics, and no idea who will actually pay for this.

Impressive finance expert who can ship fast, but merger arb feels like a feature, not a company.

Why featured: 'Merger arb feels like a feature, not a company' is quotably dismissive.

#4
Opsfin
AI-native payment fraud investigation platform for fintechs and payment processors.
3.7
This is not a completed YC application, it is a placeholder with a name and email but no team details, no product, no traction, and no execution proof.

Strong market, painful problem, but zero evidence this is more than an idea on paper. Needs to show the founder can build and customers will buy.

Why featured: 'This is not a completed YC application, it is a placeholder' is hilariously blunt.

Get your YC application roasted →

Free roasts by Lobster Capital