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Sim

YC Spring 2025 Active

Open source platform to build AI agent workflows

https://sim.ai ↗
Thesis fit
Good fit

Within your typical scope; diligence still required.

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In your usual scope
Idea match Moderate

How close the company’s idea is to your thesis statement

Sector ai

Overlap with sectors you care about

Geography Unknown

Location unknown — scores 0

Your thesis: “We back exceptional technical founders building AI-first products and infrastructure, deploying $100K checks within 24 hours.”

Founder → stable Traction → stable Idea vs market ↓ declining
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Correct facts used on the next screening or memo.

Activity & evidence

Y Combinator Y Combinator · in batch signal ▸

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