Perseus (YC Fall 2025)

TL;DR: Perseus is a Y Combinator Fall 2025 startup Applied Lab focused on Search in Latent Spaces., currently active with a team of 4.

Applied Lab focused on Search in Latent Spaces.

YC ID
30967
YC Batch
Fall 2025
Status
Active
Team size
4
Industry
B2B, Engineering, Product and Design
Tags
Artificial Intelligence, Genetic Engineering
YC profile
https://www.ycombinator.com/companies/perseus

Last verified:

Perseus takes an iterative branching approach to search in high dimensional spaces. Our first product helps coding agents find the right codebase context before they write. It searches files, symbols, and dependencies in parallel, so models can make better changes with less trial and error. Perseus Search gives Mythos-level programming ability to Opus-level coding agents.

Frequently asked questions

Is Perseus a YC (Y Combinator) company?

Yes. Perseus was funded by Y Combinator in the Fall 2025 batch. Applied Lab focused on Search in Latent Spaces.

What does Perseus do?

Perseus takes an iterative branching approach to search in high dimensional spaces. Our first product helps coding agents find the right codebase context before they write. It searches files, symbols, and dependencies in parallel, so models can make better changes with less trial and error. Perseus Search gives Mythos…

What YC batch was Perseus in?

Perseus was part of Y Combinator's Fall 2025 batch.

How big is Perseus?

Perseus has a team of 4 people according to Y Combinator's directory.

Is Perseus still active?

Perseus is currently listed as Active with a team of 4 in Y Combinator's directory.

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