Who founded Magnitude?

Magnitude was founded by Tom Greenwald, Anders Lie in 2025.

Who are Magnitude's investors?

Magnitude's investors include Y Combinator.

Where is Magnitude headquartered?

Magnitude is headquartered in San Francisco, US.

Magnitude

YC S25

San Francisco, US · Founded 2025 · 2 employees · 1 known investors

Find your way into Magnitude

373 people in our graph share verified history with the Magnitude team — schools, employers, funds. One of them is your warm intro.

Hemamunlockedknows Anders Lie · together at Stealth Startup (overlapped)

×6knows the team · via Stealth Startup

×2knows the team · via Northeastern University

×3knows the team · via Iowa State University

Magnitude is an AI coding agent optimized for open-source language models like GLM, Kimi, and DeepSeek, designed to generate and execute code with improved reliability and efficiency. The platform serves software developers and teams looking to build with open weights models at lower cost than frontier API pricing.

Also known as Sagekit · Sidekick

AI & Machine Learning Developer Tools Enterprise Software Artificial Intelligence Open Source Infrastructure AIUnited States of AmericaAmerica / Canada

Founders & leadership· Y Combinator alumni (S25)

Magnitude was founded in 2025 by Tom Greenwald and Anders Lie.

Tom Greenwald in 𝕏Co-Founder & CEOTom Greenwald studied computer science at Northeastern University and worked as a product manager on special projects at SimpliSafe before becoming CEO of Magnitude.

Anders Lie in 𝕏Co-Founder / CTOAnders Lie is a CTO at Sagekit with a computer science and mathematics degree from Iowa State University. He previously worked as a software engineer at AWS on automation platforms.

Investors · 1

Y CombinatorSan Francisco · $500K

In the news

Sidekick - Automation for the rest of usycombinator.com · Aug 2025

Frequently asked questions

What does Magnitude do?: Magnitude is an AI coding agent optimized for open-source language models like GLM, Kimi, and DeepSeek, designed to generate and execute code with improved reliability and efficiency. The platform serves software developers and teams looking to build with open weights models at lower cost than frontier API pricing.
Who founded Magnitude?: Magnitude was founded by Tom Greenwald, Anders Lie in 2025.
Who are Magnitude's investors?: Magnitude's investors include Y Combinator.
Where is Magnitude headquartered?: Magnitude is headquartered in San Francisco, US.