Fundraising Fox

/Companies

Cranston AI

San Francisco, US · Founded 2025 · 2 employees · Hiring · 18 known investors

Find your way into Cranston AI

Sign up to see every warm intro you have to Cranston AI

Paths you didn't know you had: your email and LinkedIn already hold routes to the Cranston AI team. We find them for you
2nd- and 3rd-degree connections: the friend-of-a-friend routes that take hours to manually find through your inbox or LinkedIn
Answers now, not in days: momentum is everything in a raise. Skip asking around whether someone knows someone

Days of research, done the moment you sign in, with every route ranked by how warm it is.

Sign up with Google Already have an account? Log in

Cranston builds AI agents that automate back-office work for CPA firms, including tax preparation, bookkeeping, and client follow-up processes. The platform can operate as software used by firm staff or as a managed service where the company handles the work directly.

Also known as Cranston Accounting Group, Inc. · Cranston Group

AI & Machine Learning Enterprise Software Fintech SaaSUnited States of AmericaAmerica / Canada

Founders & leadership· Y Combinator alumni (F25)

Cranston AI was founded in 2025 by Sean O'Bannon and Max Minsker.

SO

Sean O'Bannon

Sean O'Bannon Co-FounderSean 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.

MM

Max Minsker

Max Minsker Co-FounderHe previously owned a tax practice that processed thousands of individual returns.

Investors · 18

Rebel Fundlisted by Rebel FundSan Francisco · $100K – $5M

How we know: Y Combinator's founder network · rebelfund.vc · Not right? Tell us

Transpose Platform Managementlisted by Transpose Platform ManagementSan Francisco

How we know: Transpose Platform Management's portfolio page · Y Combinator's founder network · Not right? Tell us

Y Combinatorlisted by Y CombinatorSan Francisco · $500K

How we know: the Y Combinator directory · open dataset · 5k.vc investor directory · Not right? Tell us

Amino CapitalreportedPalo Alto · $100K – $10M

How we know: Y Combinator's founder network · Not right? Tell us

Andreessen HorowitzreportedMenlo Park · $500K – $50M

How we know: Y Combinator's founder network · Not right? Tell us

Blast.Clubreported$5.5M

How we know: Y Combinator's founder network · Not right? Tell us

Founder CapitalreportedSilicon Valley · $25K – $100K

How we know: Y Combinator's founder network · Not right? Tell us

Informed Ventures Advisors, LlcreportedMenlo Park

How we know: Y Combinator's founder network · Not right? Tell us

Kleiner PerkinsreportedMenlo Park · $500K – $15M

How we know: Y Combinator's founder network · Not right? Tell us

Liquid VenturesreportedSan Francisco · $250K – $5M

How we know: Y Combinator's founder network · Not right? Tell us

OurCrowdreportedJerusalem

How we know: Y Combinator's founder network · Not right? Tell us

Palm Drive CapitalreportedNew York · $500K – $5M

How we know: Y Combinator's founder network · Not right? Tell us

Peterson Venture PartnersreportedSalt Lake City · $5M – $25M

How we know: Y Combinator's founder network · Not right? Tell us

SAV (Scale Asia Ventures)reportedPalo Alto

How we know: Y Combinator's founder network · Not right? Tell us

Script CapitalreportedSan Francisco · $250K – $500K

How we know: Y Combinator's founder network · Not right? Tell us

Singularity Venturesreported

How we know: Y Combinator's founder network · Not right? Tell us

SV AngelreportedSan Francisco · $150K – $20M

How we know: Y Combinator's founder network · Not right? Tell us

TechU VenturesreportedCedarhurst

How we know: Y Combinator's founder network · Not right? Tell us

Related companies · 10

AccrualAccrual builds AI-powered software that automates routine accounting tasks for accounting firms, enabling accountants to focus on high-value advisory work. The platform handles complex financial data processing, workflows, and compliance requirements to increase throughput and accuracy in professional accounting services.

AccordanceDevelops AI tools for tax and accounting professionals to improve compliance, financial planning, and decision-making capabilities. Serves accounting firms, finance teams, and tax professionals.

TrullionTrullion provides AI-powered software for internal and external audit teams that automates testing, data extraction, and reconciliation workflows. The platform centralizes audit work, reduces manual errors, and enables real-time collaboration for financial statement validation.

Black Ore TechnologiesBlack Ore builds intelligent infrastructure for tax and financial services, automating execution and scaling personalized advice for firms, businesses, and individuals.

a16z Speedruna16z is a venture capital firm that invests in seed to growth-stage technology companies across artificial intelligence, healthcare, consumer, crypto, enterprise, fintech, gaming, and infrastructure sectors. The firm leverages a large team of operators and ex-founders to support portfolio companies across multiple stages of development.

BasisBasis builds autonomous AI agents that perform accounting work end-to-end, collaborating with accountants at key decision points to deliver finished accounting deliverables. The company serves accounting firms and organizations seeking to scale accounting capacity amid growing economic complexity.

DigitsDigits is an AI-native accounting platform that automates schedules such as fixed assets, prepaid expenses, revenue recognition, and accrued expenses directly within the general ledger, replacing spreadsheets and manual journal entries. It serves accountants and accounting firms with automated bookkeeping, reconciliations, and month-end financial reporting.

PuzzlePuzzle builds a modern accounting system for startups and small-to-medium businesses, delivering real-time financial intelligence by reconstructing core ledger and data infrastructure. The platform replaces legacy accounting software with AI-era capabilities designed to make financial data trustworthy and actionable.

KarbonKarbon provides accounting practice management software for accounting firms, offering tools for team collaboration, workflow and task automation, client management, and email. It includes an AI assistant ("Kai") that draws on a firm's data to handle tasks and answer questions.

TruewindTruewind automates transaction coding, reconciliation, and close management for accounting teams by converting bank statements and workpapers into GL-ready journal entries and audit-ready schedules. The platform integrates with Sage Intacct and QuickBooks Online and serves accountants, family offices, nonprofits, and bookkeeping firms.

Companies working in the same space as Cranston AI.

Legal entities · 1

corporate structure

Cranston Accounting Group, Inc.

Frequently asked questions

What does Cranston AI do?: Cranston builds AI agents that automate back-office work for CPA firms, including tax preparation, bookkeeping, and client follow-up processes. The platform can operate as software used by firm staff or as a managed service where the company handles the work directly.
Who founded Cranston AI?: Cranston AI was founded by Sean O'Bannon, Max Minsker in 2025.
Who are Cranston AI's investors?: Cranston AI's investors include Rebel Fund, Transpose Platform Management, Y Combinator, Amino Capital, Andreessen Horowitz, Blast.Club, Founder Capital, Informed Ventures Advisors, Llc and 10 more.
Where is Cranston AI headquartered?: Cranston AI is headquartered in San Francisco, US.