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Full-stack AI accounting platform for CPA firms
HQ: San Francisco, CA | Founded: 2025 | Employees: 4 | Stage: Seed | Website: https://cranston.ai
Cranston AI is a full-stack AI accounting platform that automates back-office accounting work for CPA firms. The platform handles data ingestion from multiple sources, transaction processing and categorization, bank reconciliation, financial insights and analytics, and tax preparation. It sits on top of existing accounting tools like QuickBooks and CCH Axcess, pushing completed work for reviewer approval. Cranston targets the $900B market for accounting labor. Founded in 2025 by Sean O'Bannon (CEO) and Max Minsker. O'Bannon studied CS and AI at Stanford before dropping out to start ReMatter, a vertical ERP for scrap yards that raised $20M+ from Founders Fund and Index Ventures. He managed a team of 20+ and previously worked at Databricks. Minsker ran a bootstrapped accounting firm that ser
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