Sylvian YC Application

Fall 2025Inactive

Sylvian 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: B2B
Team size: 2
Status: Inactive
Launched: 2025

Founders

William HuangFounder
Niall KehoeFounder

What Sylvian does

Sylvian helps companies build specialized AI agents.

Sylvian's YC application, reconstructed

Y Combinator application

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

Founders2
Company7
Progress7
Idea4
Equity3
Curious2
Batch Preference1

Company

Company name

Sylvian

Describe what your company does in 50 characters or less.

Specialized AI Agents

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

We build tools that help companies create AI agents trained specifically for their unique workflows and data. These agents automate complex tasks through reinforcement learning tailored to each business's needs. Our product lets teams build, test, and deploy specialized AI agents without reinventing the wheel for every use case.

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

We live in San Francisco, CA, and plan to base the company here during and after YC.

Explain your decision regarding location.

We're based in San Francisco because that's where we already live and where we have access to AI talent and potential customers. Staying local means we can move fastest and leverage the network YC offers in Silicon Valley.

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 Sylvian YC application?

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