cubic YC Application

Spring 2025Active

cubic went through Y Combinator in the Spring 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: Spring 2025
Industry: B2BEngineering, Product and Design
Team size: 3
Status: Active
Launched: 2025

Founders

Paul Sanglé-FerrièreFounder & CEO

What cubic does

Code review is a major bottleneck for software teams, and the rise of AI-generated code is making the problem worse. Reviewing large volumes of code slows devs down, and increases the chances of bugs slipping through. That's why we're building cubic: an intelligent code review platform that helps devs merge PRs 28% faster. How? - When you open a PR, cubic automatically reviews it. It learns from your codebase's patterns, points out bugs, suggesting fixes, and frees you from low-level review tasks. - You then jump into the cubic platform, which is designed to optimize how humans review code. For example, file changes are organized in a logical order instead of alphabetical, and cubic generates diagrams of architecture changes.

cubic's YC application, reconstructed

Y Combinator application

cubic, Spring 2025 batch. The real form questions, answered from public data.

Founders2
Company7
Progress7
Idea4
Equity3
Curious2
Batch Preference1

Company

Company name

cubic

Describe what your company does in 50 characters or less.

AI-powered code review platform

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

We're building cubic, an AI-assisted code review tool for engineering teams. It automatically reviews pull requests, learns from the project's codebase to catch bugs and suggest fixes, and reorganizes file changes so human reviews are faster and more effective.

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

We live in London, England, and the company is based here. We'd keep the company in London after YC.

Explain your decision regarding location.

We're building cubic out of London because our team is here and we're close to our early users in the engineering community. London has a strong software engineering talent pool and customer base for developer tools.

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 cubic YC application?

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