Petual, an AI-powered audit platform backed by Andreessen Horowitz, just raised $20 million to automate one of corporate America's most tedious and expensive processes: Sarbanes-Oxley (SOX) compliance testing. The company's AI agents can generate complete audit work papers in minutes instead of the hundreds of hours teams currently spend manually gathering evidence, testing controls, and documenting findings.

Why Is SOX Compliance Such a Burden for Large Companies?

For public companies, SOX compliance is not optional. The Sarbanes-Oxley Act requires rigorous internal audits and financial controls, but the process is brutally manual. Auditors wade through hundreds of unstructured files per control, collecting evidence from screenshots, PDFs, and Excel spreadsheets, then reasoning through that data to generate documentation that meets external auditor expectations.

The scale of this burden is staggering. Well over $8 billion is spent annually on SOX compliance in the US market alone, and much of that money goes toward labor-intensive, repetitive work that repeats year after year. For audit teams, this leaves little time for higher-value risk management activities that actually require human judgment and stakeholder engagement.

How Does Petual's AI Approach Work?

Petual's platform brings what's called "agentic AI" to the compliance process. Rather than simply suggesting answers, these AI agents autonomously execute evidence gathering and work paper generation at enterprise scale for the first time. The system ingests both structured and unstructured evidence, then generates complete work papers formatted to meet external auditor expectations, with detailed reasoning traceable back to source documents.

The efficiency gains are dramatic. Petual's customers report achieving 68 to 80 percent efficiency improvements on current SOX workflows. What once took weeks of manual labor now takes minutes, while maintaining the human oversight that compliance demands.

Steps to Implement AI-Driven Audit Automation

• Assess Current Workflows: Map out which audit controls and evidence-gathering processes are most time-consuming and repetitive, as these are the best candidates for AI automation.
• Ensure Data Readiness: Organize structured and unstructured evidence sources, including PDFs, screenshots, and spreadsheets, so AI agents can ingest and process them reliably.
• Maintain Human Oversight: Establish review workflows and approval chains that keep human auditors in control of final decisions, ensuring AI outputs are validated before submission to external auditors.
• Validate Auditor Compatibility: Confirm that AI-generated work papers meet external auditor templates and expectations, with full traceability to source documents.

The early customer base speaks to the market opportunity. Petual's clients already include both S&P 500 and NASDAQ 100 companies spanning energy, software, infrastructure, manufacturing, and financial services.

"As a large public company, maintaining audit quality while scaling efficiently is critical. Petual enables us to do both, delivering structured, auditor-ready workpapers in a fraction of the time it would take manually," said Erin Dempsey Heuwetter, Head of Audit, Risk and Compliance at Navan.

Erin Dempsey Heuwetter, Head of Audit, Risk and Compliance at Navan

What Makes This Investment Significant for a16z?

The $20 million funding round, led by Andreessen Horowitz alongside First Round Capital, Cowboy Ventures, and Elad Gil, reflects a broader a16z thesis about AI's impact on enterprise operations. Rather than simply adding a "copilot" to existing workflows, Petual's approach actually rewires how audit functions operate, freeing human auditors from routine data processing to focus on judgment-intensive risk analysis.

"It's not often that we see an early-stage company able to reach large enterprise customers so early in their journey. This is a testament to both how compelling the market opportunity is for Petual and the strength of the product they've built," said Brian Roberts, a16z general partner and Petual board member.

Brian Roberts, General Partner at Andreessen Horowitz

The team behind Petual brings deep expertise at the intersection of technology, audit, and risk. Founder and CEO Snir Kodesh previously led engineering at Retool, while the team includes leaders like Eliot Walker, former CTO of Fleet at Lyft, and David Coulombe, former VP of Audit and Chief Audit Executive at Lyft. This combination of AI engineering talent and audit domain expertise is rare and explains why the company has already landed marquee customers.

For a16z, this investment fits into a larger pattern of backing AI companies that automate high-value, high-friction enterprise processes. Unlike consumer-facing AI applications, compliance automation offers predictable, recurring revenue from companies that must spend on these functions regardless of economic conditions. The $8 billion annual SOX market alone represents a massive addressable opportunity for a platform that can cut costs by 70 percent while improving audit quality.