Polymath

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Polymath

Simulated worlds for end-to-end AI training

Website

Overview

Polymath AI Labs builds simulated worlds to train AI agents on real-world, long-horizon tasks. Its simulations combine running applications, real tools, and multi-step workflows to teach end-to-end software development and other complex tasks. A flagship product, Horizon-SWE, evaluates an agent’s ability to plan, code, test, and deploy inside a simulated software company. The goal is to create reliable, autonomous AI systems that can operate with minimal human supervision in real-world settings.

YC Company
Launched Recently

About Polymath

Simplify's Rating
Why Polymath is rated
C-
Rated C on Competitive Edge
Rated C on Growth Potential
Rated D+ on Differentiation

Industries

Data & Analytics

Enterprise Software

AI & Machine Learning

Company Size

1-10

Company Stage

Seed

Total Funding

$130K

Headquarters

San Francisco, California

Founded

2025

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Simplify's Take

What believers are saying

  • YC listed Polymath active on August 26, 2026, with six employees.
  • Polymath updated its site on September 4, 2026, naming Base10, Cervin, and YC.
  • Horizon-SWE launched February 6, 2026 and benchmarked frontier models credibly.

What critics are saying

  • No public revenue, customer logos, or contracts prove demand beyond frontier labs.
  • OpenAI, Anthropic, and Google can build internal simulators faster than a six-person startup.
  • If benchmark quality stalls, Polymath becomes a replaceable services vendor by 2027.

What makes Polymath unique

  • Horizon-SWE uses a containerized software company with 73 tools and live traffic.
  • It scores agents across feature correctness, DevOps, and engineering quality, not toy tasks.
  • YC Winter 2026 founders bring Hume, Plaid, AWS, Amazon, and Berkeley pedigrees.

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Funding

Total Funding

$130k

Below

Industry Average

Funded Over

1 Rounds

Notable Investors:
Y CombinatorY Combinator
Seed funding is usually the first official round after pre-seed, when a startup has a prototype or concept. It’s typically used to develop the product, test the market, and start building the team. Investors here are often angel investors or early-stage venture capitalists.
Seed Funding Comparison
Below Average

Industry standards

$3.3M
$130k
Polymath
$1.5M
Slack
$2M
Netflix
$2.3M
Instacart
$3M
Robinhood

Benefits

Health Insurance

Dental Insurance

Vision Insurance

401(k)

Unlimited Paid Time Off

Commuter Benefits

Gym Membership

Meal Benefits

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