Fast Accounting , a pioneer in AI-driven accounting automation, announced the launch of “Deep Dean,” a proprietary AI model designed to transform how businesses manage accounting, tax, and finance operations. Purpose-built using an internally developed large language model (LLM), Deep Dean has demonstrated passing-level performance across U.S. CPA (USCPA) exam standards — outperforming general-purpose AI models like GPT-4o in specialized tasks.
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The announcement marks a major milestone in Fast Accounting’s ongoing mission to achieve “Accounting Singularity” – the point where AI exceeds human capabilities in accounting processes.
Purpose-Built for Accounting Excellence
Deep Dean was developed to address the specialized demands of accounting and finance professionals. To benchmark its expertise, Fast Accounting tested Deep Dean against publicly available questions from the 2024 U.S. CPA exam, evaluating both multiple-choice and task-based simulation (TBS) sections across six subjects.
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While the U.S. CPA exam includes unscored pretest questions, Fast Accounting sets a rigorous new standard: achieving 90% accuracy per section, compared to the 75% benchmark typically required for passing.
Deep Dean exceeded expectations, delivering 90% or higher accuracy in five of six subjects — including all three core subjects:
- FAR (Financial Accounting and Reporting)
- AUD (Auditing and Attestation)
- REG (Regulation)
The AI maintained an 86% accuracy rate in the sixth subject, demonstrating mastery across a broad range of accounting competencies.
In comparison testing, Deep Dean consistently outperformed GPT-4o, a leading general-purpose AI, in accounting-specific tasks.
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Positioning for U.S. Market Expansion
Fast Accounting established its U.S. presence in February 2025 to support U.S. enterprises seeking next-generation accounting automation solutions. With Deep Dean’s proven ability to meet U.S. CPA standards, the company is well-positioned to help organizations automate labor-intensive tasks, mitigate fraud/human error, and free accounting professionals to focus on more strategic work. Future developments will further expand Deep Dean’s capabilities into areas such as advanced bookkeeping and consolidated accounting.
“Since founding Fast Accounting in 2016, we’ve been focused on transforming the accounting industry through cutting-edge AI technologies,” said Keitaro Mori, Director and CEO of Fast Accounting. “Our engineers have earned international recognition for their research, and Deep Dean is the latest proof of our ability to innovate. We’re proud to introduce a specialized AI that has mastered U.S. CPA exam standards and we’re excited to bring this breakthrough to the U.S. market.”
Mori continued, “By automating time-consuming accounting tasks like expense report verification and accounting system data entry, Deep Dean will help businesses address the growing labor shortage in finance and accounting. Through Accounting Singularity, we aim to create a future where accounting professionals can focus on driving corporate value rather than routine operations.”
About Fast Accounting
Liberating Accountants to Focus on Strategic Work
Fast Accounting is a technology leader dedicated to automating and optimizing accounting operations. Through its proprietary use of generative AI and computer vision technologies, Fast Accounting enables major enterprises and accounting vendors to streamline workflows, reduce labor burdens, and unlock greater strategic value from finance teams. The company’s mission is to address the global shortage of accounting talent and empower finance professionals to drive business growth.
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Source – PR Newswire
