Samuel Hahn

Founder @ Petrarch (YC S26)

[Samuel Hahn @Sammycrafty]

Check out our first article on the current condition of data markets

[Petrarch (YC S26) @petrarchinc]

The data market is shifting from a farming to a mining model. Training the next family of long-horizon enterprise agents requires data from real, revenue-generating businesses.

Link to the blog post in the comments.

[Petrarch (YC S26) @petrarchinc]

The data market is shifting from a farming to a mining model. Training the next family of long-horizon enterprise agents requires data from real, revenue-generating businesses.

Link to the blog post in the comments.

[Samuel Hahn @Sammycrafty]

@petrarchinc great read

[Samuel Hahn @Sammycrafty]

@ileeilee12 @sudsw1234 @pgao89

[Samuel Hahn @Sammycrafty]

@ileeilee12 @sudsw1234 @pgao89 Ian was going brazy😂

[Ian Lee @ileeilee12]

Intern came to visit!

[Samuel Hahn @Sammycrafty]

@ileeilee12 @sudsw1234 @petrarchinc Mama we made it

[Samuel Hahn @Sammycrafty]

@Aditya_181105 Orca ADE

[Samuel Hahn @Sammycrafty]

My GPT computer-use agent as lazy as me. I asked it to help edit some slides on powerpoint and it began prompting the claude in ppx tool to make it😭

[Petrarch (YC S26) @petrarchinc]

If your company made revenue but pivoted / shutdown, let's chat.

We are looking for old codebases.

[Petrarch (YC S26) @petrarchinc]

We started ideating in our dorm rooms 3 months ago. Skipped finals and flew out to SF. Now we are building with @ycombinator. Excited to continue sharing more!

[Petrarch (YC S26) @petrarchinc]

Petrarch is building the market for specialized data locked up in enterprise companies.

Founders @ileeilee12, @Sammycrafty, and @sudsw1234 dropped out of Harvard to unlock the next wave of training data.

Backed by @ycombinator, @vivianmshen

[Samuel Hahn @Sammycrafty]

@ileeilee12 Needa farm before launch

[Samuel Hahn @Sammycrafty]

Snapshot of our office (also home)
Day 1 of YC 06.20.2026

[Samuel Hahn @Sammycrafty]

evening hoops is peak

[Samuel Hahn @Sammycrafty]

@sudsw1234 @ycombinator 🫡

[Samuel Hahn @Sammycrafty]

Dropped out of Harvard to build Petrarch (YC S26) @ycombinator

[Samuel Hahn @Sammycrafty]

@ileeilee12 @ycombinator 🙏

[Samuel Hahn @Sammycrafty]

@catarina_chia @ycombinator 🙏