Nuntius YC Application

Summer 2025Inactive

Nuntius went through Y Combinator in the Summer 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: Summer 2025
Industry: B2BInfrastructure
Team size: 2
Status: Inactive
Launched: 2025

What Nuntius does

Applying artificial intelligence to economically productive use-cases requires bulletproof alignment. We’re solving that.

Nuntius's YC application, reconstructed

Y Combinator application

Nuntius, Summer 2025 batch. The real form questions, answered from public data.

Founders2
Company7
Progress7
Idea4
Equity3
Curious2
Batch Preference1

Company

Company name

Nuntius

Describe what your company does in 50 characters or less.

Making Models Follow Rules.

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

We build software that ensures AI models behave according to strict, verifiable rules. Our product uses reinforcement learning to align AI actions with economic constraints and safety requirements, making AI more reliable in practical business settings.

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

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

Explain your decision regarding location.

San Francisco is where we are based and where access to AI talent, customers, and YC resources is greatest, so it's natural for us to stay here.

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 Nuntius YC application?

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