Polymath YC Application

Winter 2026Active

Polymath went through Y Combinator in the Winter 2026 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: Winter 2026
Industry: B2B
Team size: 2
Status: Active
Launched: 2026

Founders

Dylan MaFounder
Naren YenugantiFounder

What Polymath does

We’re heading towards a future where AI agents will be able to perform useful work over long horizons, with little or no human supervision. To increase the reliability, performance, and safety of autonomous agents, they must be trained in simulation environments that reflect the real world. Polymath builds simulated worlds for agents to practice and learn through experience. We're a team of researchers and engineers from UC Berkeley, Hume AI, Plaid, and Amazon. We have years of experience post-training frontier models in industry, and building large scale data systems. Polymath is backed by Y Combinator.

Polymath's YC application, reconstructed

Y Combinator application

Polymath, Winter 2026 batch. The real form questions, answered from public data.

Founders2
Company7
Progress7
Idea4
Equity3
Curious2
Batch Preference1

Company

Company name

Polymath

Describe what your company does in 50 characters or less.

Simulation environments to train & evaluate long-horizon AI agents

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

We build simulated worlds where AI agents can practice tasks that require planning and reasoning over long time horizons. Our product creates environments that match real-world complexity to improve the reliability and safety of autonomous agents before they see real conditions.

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

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

Explain your decision regarding location.

San Francisco is where we both live and work, and it's a major hub for AI research and startups. Being here keeps us close to the networks and talent we rely on.

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 Polymath YC application?

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