Fundraising Fox

Sean O'Bannon

Founder

Founder at Cranston AI

San Francisco, California, United States

FoundedCranston AI · YC

About

Sean O'Bannon studied computer science and artificial intelligence at Stanford and previously founded ReMatter as its CTO. He was an engineer at Databricks before starting Cranston AI.

Founder at Cranston AIYC F25

Intro paths

YC

Sean went through Y Combinator (Fall 2025) — any YC alum in your network can reach them through the YC community.

GP

Their group partner at YC was Tom Blomfield, Monzo and GoCardless co-founder; Y Combinator partner on leave and Anthropic compute-team member. — the partner who ran Cranston AI's batch and knows the company first-hand. YC profile ↗

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In turn, Sean can intro founders to Cranston AI's investors below.

Cranston AI's investors · 1

Y CombinatorSan Francisco · $500K checks · since 2025

Co-founders at Cranston AI

MMMax Minsker
Max MinskerFounder

Experience

  1. Cranston AICo-Foundercurrent2025 — present
  2. ReMatter Inc.Co-Founder2019 — 2024
  3. DatabricksML2019San Francisco Bay Area

Skills & more

Finance3Machine Learning2iOS Development7Deep LearningData AnalysisStrategery2Teamwork2Leadership4JavaScript9SQL8Swift7C#8
+8 moreAmazon Web Services (AWS)Objective-CJavaMicrosoft OfficeCC++PythonDocker

From Sean's professional profile.

Frequently asked questions

Who is Sean O'Bannon?
Sean O'Bannon studied computer science and artificial intelligence at Stanford and previously founded ReMatter as its CTO. He was an engineer at Databricks before starting Cranston AI.
Where does Sean O'Bannon work?
Sean O'Bannon is Founder of Cranston AI.
What companies did Sean O'Bannon found?
Sean O'Bannon founded Cranston AI.
Where did Sean O'Bannon go to school?
Sean O'Bannon studied at Stanford University (MS (Dropped out), BS, Computer Science, focus in AI).

Founder mafias

Y Combinator mafia8,773

Also came through, then founded or led a company.

Sam AltmanPresidentFounded Tools for Humanity +3Jessica LivingstonCo-founderFounded Y CombinatorAlexis OhanianYC Summer 2005Founded RedditFred EhrsamYC Summer 2012Founded Nudge +1Matt HuangYC Winter 2011Founded HotspotsTrae StephensYC Winter 2022Founded Pursuit +1

+ 8,766 more

Stanford University mafia903

Also came through, then founded or led a company.

Peter ThielJ.D.Founded PayPal +1Reid HoffmanB.S.Founded LinkedIn +2Joe LonsdaleBSFounded Opto +3Mike Maples JrBSFounded Pattern BreakersSteve JurvetsonMSEEFounded Mojo VisionBalaji SrinivasanGraduate StudentFounded Counsyl +1

+ 896 more

Databricks mafia23

Also came through, then founded or led a company.

Ben HorowitzDirectorFounded OpswareNaveen RaoVice President of Artificial IntelligenceFounded Mosaic ML +1Danny WenInvestorFounded Crowdmade +1Jean Yves StephanSoftware Engineer and Tech Lead ManagerFounded Data Mechanics +1PankajVP, Product and Data PartnershipsFounded AI21 LabsAndy KonwinskiFounderFounded Perplexity

+ 16 more

Same school

Also attended Stanford University2,000

Peter ThielCo-founder & Partner at Founders FundReid HoffmanCo-founder of LinkedIn; Partner at GreylockKeith RaboisManaging Director at Khosla VenturesGarry TanPresident & CEO of Y CombinatorAlfred LinPartner at Sequoia CapitalAnn Miura-KoCo-founding Partner at Floodgate

+ 1,994 more

Shared employers

Also worked at Cranston AI1

Max MinskerFounder at Cranston AI

Also worked at ReMatter Inc.1

Umar NadeemFounder at Kabilah

Also worked at Databricks98

Ali GhodsiCo-founder & CEO of DatabricksSangeen ZebInvestor at GV (Google Ventures)Arsalan TavakoliInvestor at Foundation CapitalAshu GargInvestor at Foundation CapitalEryk DobrushkinInvestor at Index VenturesJules GsellInvestor at IVP (Institutional Venture Partners)

+ 92 more