Case Study
Can an AI Fill Out the YC S26 Application? We Tried It.
Alex Thompson|February 26, 2026|9 min
The Y Combinator application is a rite of passage for startups. It is long, detailed, and requires thoughtful answers about your team, product, market, and vision. We wondered: could Coasty fill it out?
The Challenge
YC applications have 30+ fields across multiple pages. Some require short answers, others need detailed essays. The form includes dropdowns, radio buttons, text areas, and file uploads. It is not a simple form.
What Coasty Did
- ●Navigated to the YC application page and started filling fields
- ●Used company context to write relevant answers for each question
- ●Handled different input types: text fields, dropdowns, radio buttons
- ●Wrote thoughtful essay responses for open-ended questions
- ●Reviewed and revised answers before moving to the next section
- ●Completed the entire application in a single session
Coasty completed the full YC application in under 20 minutes. A human typically spends 4-8 hours on the same form.
Form filling sounds simple, but complex applications like YC require contextual understanding, strategic thinking, and the ability to navigate unpredictable form layouts. Coasty handled all of it.
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