We Back MIT Founders.

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Proudly backed by

What we do

SBXi is jointly backed by Accel, Polaris Partners, GETTYLAB, General Catalyst, Pillar, Danaher, Underscore VC and Glasswing Ventures — we write $10K-$100K checks on SAFEs and $100K-$1M checks when there’s a qualifying term-sheet we can match.

Who is it for?

We invest exclusively in founders who graduated from MIT — to help you build the next wave of generational companies only MIT could spark.

01

Apply

Answer a few introductory questions. We reply in two business days.

02

Record

If you’re a fit we’ll ask you to record a 5-minute video answering a few questions.

03

Decision in 7 days

Sponsors review the video, vote, and return a funding decision in 7 days.

01

Apply

Answer a few introductory questions and send over a term sheet if you have it. We reply in two business days.

02

Meet

We conduct diligence and coordinate atime for you to pitch the SBXi sponsors or record a pitch.

03

Decision

After the pitch, we will return a timely investment decision. On average, this process takes a couple of weeks.

Erik Duhaime
Founder spotlight

Erik Duhaime

Erik began his PhD research at MIT studying collective intelligence, where he explored how groups of humans and machines can make better decisions together than any individual alone. Inspired by his wife’s experience in medical training, he applied this work to medicine, running large-scale experiments on how to combine the judgments of clinicians and AI systems to more accurately assess skin lesions for cancer.

His research showed that weighting opinions by performance, rather than credentials or seniority, and identifying complementary strengths between humans and algorithms consistently outperformed even the best individual doctor or AI model. This work became the foundation of Centaur Labs, now Centaur.ai.

Cat Li
Founder spotlight

Cat Li

Cat is the co-founder and CEO of Simple AI. She studied computer science and mathematics at MIT.

Before starting Simple AI, Cat spent four years at Y Combinator, leading the software teams behind Startup School, the YC Library, and YC’s Co-Founder Matching platform. Her work focused on building tools that help founders learn, connect, and start companies more effectively.

Anna Sun
Founder spotlight

Anna Sun

Anna studied Computer Science and Business Management at MIT, where she served as class president for a class of over 1,300 students and organized large-scale social and community events. That experience shaped her interest in building trust, coordination, and systems that operate at scale.

Before founding Nowadays, Anna was a Product Manager at Datadog, where she worked on metrics products to help teams optimize costs and build stronger relationships with customers. Outside of work, she enjoys making violin videos and going on long runs.

Frequently Asked Questions

Who is it for?

Our fund is open to graduates of any MIT degree program.

How much do you invest?

Companies that are raising a priced round and have a lead investor are eligible to be evaluated for $100K-$1M checks matching the same terms as their lead investor. Companies that are not raising a priced round are eligible to be evaluated for $10K-$100K checks on SAFE notes.

How long does it take?

SAFE notes can be evaluated in as little as 7 days. For priced rounds, after we meet you, we conduct diligence and coordinate a time for you to pitch the SBXi sponsors. After the pitch, we will return a timely investment decision. On average, this process takes a couple of weeks.

How do I get started?

Fill out the quick application form here. We will confirm eligibility and follow up by email to schedule a discussion or answer questions.

How far along should I be?

For Seed or Series A rounds, if you are in the process of negotiating a term sheet, feel free to reach out to us so that we can begin to evaluate it. For pre-seed rounds, it is never too early to speak with us. We are eager to hear about your idea from the earliest stages and see how we can support your journey.

Will my pitch be kept confidential?

Pitches are shared only with the eight sponsoring funds. If you prefer to password-protect your pitch, feel free to do so, and we will share the password with the voting partners.