ReasonBlocks

ReasonBlocks

The runtime layer that makes AI agents cheaper and more reliable

San Francisco
2 employees
Pre-seed · $500K

About ReasonBlocks

ReasonBlocks is the runtime layer that makes AI agents cheaper and more reliable. We correct agent reasoning and compress tokens mid-run, with gains compounding across runs. On SWE-Bench pro we have seen a 52% token reduction and 42% accuracy lift.

Company details

Team Size2
LocationSan Francisco

Funding

Total raised

$500K

Last stage

Pre-seed

Investors

Y Combinator

Founders

Sajeev Magesh

Sajeev Magesh

Formerly at Stanford CS. Published in Nature Sustainable Agriculture (ML × agriculture). UN Best Paper. USAMO qualifier. Co-founder of ReasonBlocks (YC P26).

LinkedIn
Rohan Vij

Rohan Vij

Formerly at CMU, studying Information Systems & Artificial Intelligence. Molecular dynamics + AI research. AI for distributed energy at ENGIE. IoT research at UC Davis. 11 years building with co-founder Sajeev; we're making LLMs cheaper and more reliable.

LinkedIn

What happens next.

No applications, no recruiter spam. Just the intro.

01

Confirm the fit

A few questions to make sure this role is the right shape for you. Two minutes.

02

I pitch you to the company

I write the intro, send it to the founder, and handle the back-and-forth.

03

A meeting lands on your calendar

If they’re a yes, I book the chat. You show up — that’s the whole job-hunt.