OpenBuilder YC Application

Fall 2025Active

OpenBuilder went through Y Combinator in the Fall 2025 batch as a B2B company. Below: what the company does, who founded it, and its application to YC, reconstructed question by question in the real YC form.

YC batch: Fall 2025
Industry: B2BEngineering, Product and Design
Team size: 3
Status: Active
Launched: 2023

Founders

Paul LiFounder
James JiangFounder

What OpenBuilder does

OpenBuilder is the vibe coding platform that helps non-technical builders take their ideas to production. Instead of paying for credits and getting stuck. OpenBuilder offers unlimited build credits, gets you unstuck and ready for production. It's also an open platform where you have access to all of your code from day one.

OpenBuilder's YC application, reconstructed

Y Combinator application

OpenBuilder, Fall 2025 batch. The real form questions, answered from public data.

Founders2
Company7
Progress7
Idea4
Equity3
Curious2
Batch Preference1

Company

Company name

OpenBuilder

Describe what your company does in 50 characters or less.

The vibe coding platform where builders actually finish

What is your company going to make? Please describe your product and what it does or will do.

OpenBuilder is a coding platform designed for non-technical builders to take ideas all the way to production. We give unlimited build credits so users don't get stuck or run out of time, and all their code is accessible from day one. It's an open platform that helps people move faster and actually ship reliable products.

Where do you live now, and where would the company be based after YC?

We live in San Francisco, CA, and the company will remain based here after YC.

Explain your decision regarding location.

San Francisco is where we're already working and where many potential users and tech partners are. Being in this ecosystem helps us move faster and stay close to the market.

21 more answers in the full application

Founders, Progress, Idea, Equity, Curious, Batch Preference are in the full version. Create a free account to open it in YC Insights, next to every other YC batch.

See full application

Frequently Asked Questions

Is this the real OpenBuilder YC application?

No. Y Combinator keeps submitted applications private. This is a reconstruction: the real YC form questions, answered from OpenBuilder's public data (launch notes, founder backgrounds, product description). It shows how a company like OpenBuilder would present itself to YC, not the text they submitted.