Mark Cuban backs AI startup SpendRule with $4M to help hospitals catch overcharges and recover lost revenue

Hospitals spend billions of dollars every year on outside vendors, from staffing and security to maintenance and IT. But negotiating a good contract is one thing. Making sure vendors actually honor it is another. Dallas-based AI startup SpendRule wants to close that gap, and billionaire investor Mark Cuban is betting $4 million that the problem is worth solving.

SpendRule announced Thursday that it has raised $4 million in seed funding led by Cuban’s Radical Investments, with participation from Zeal Capital Partners. The round brings the company’s total funding to $6 million and will support its expansion beyond healthcare into other industries where contract overpayments can quietly eat into profits.

Founded in 2025 by Chris Heckler and Joseph Akintolayo, SpendRule uses AI to read commercial agreements, compare invoices against negotiated terms, flag discrepancies, and prepare credit requests. Its pitch is straightforward: companies shouldn’t pay more than they agreed to.

“Companies spend all this time negotiating contracts, but what’s the point if nobody checks whether they’re getting what they paid for? That’s the problem SpendRule is solving,” Cuban said.

The AI startup says its technology currently covers $2.91 billion in annual contracted purchased services spending across 2,187 business relationships. That figure represents spending subject to its contract verification system, not money recovered or confirmed overcharges.

SpendRule counts OSF HealthCare, Kettering Health, MemorialCare, and MUSC Health among its healthcare customers.

The company is addressing a problem that rarely attracts the same attention as rising drug prices or insurance premiums. Hospitals negotiate thousands of vendor agreements, each carrying its own pricing schedules, service requirements, and payment conditions. Checking whether every invoice matches those terms can be a demanding administrative task.

SpendRule automates much of that review. Its software identifies potential billing errors and presents the relevant contract clause and calculation behind each finding, giving hospitals and vendors a shared record for resolving disputes.

“Nurses, techs, and the people who keep the building running aren’t the cost problem. Paying more than you agreed to is,” said Chris Heckler, SpendRule’s co-founder and co-CEO. “Every dollar lost to a billing mismatch is a dollar that didn’t go to care. This gives health systems another place to find margin without cutting patient care.”

From hospital invoices to AI-powered contract enforcement

SpendRule’s funding arrives as healthcare organizations face growing pressure to use AI to manage costs and administrative workloads.

In March, Reuters reported that U.S. hospitals and insurers were increasingly deploying AI in disputes over medical charges, reimbursement, and claim denials. The technology is helping both sides scrutinize billing decisions, raising questions about how automated financial systems could reshape healthcare payments.

SpendRule approaches the problem differently. Rather than determining what insurers should reimburse for medical treatment, it focuses on what hospitals owe their own suppliers under existing commercial agreements.

That distinction matters. The company isn’t trying to renegotiate prices. It’s trying to make negotiated prices stick.

The larger opportunity extends beyond hospitals.

How SpendRule uses AI to catch hospital overcharges and enforce contracts

As businesses begin allowing AI agents to purchase services, approve invoices, and execute payments, those systems will need clear rules governing what they’re authorized to spend.

WIRED reported in April that the FIDO Alliance, Google, and Mastercard were working on safeguards for AI-driven purchases, highlighting the financial and security risks that emerge when software begins spending money on people’s behalf.

SpendRule sees a similar need inside businesses, where purchasing decisions must comply with complicated contracts.

“Every company makes commitments it can’t monitor, enforce or keep current,” said Joseph Akintolayo, SpendRule’s co-founder and co-CEO.

Akintolayo wants the company’s software to become infrastructure that continuously checks contractual obligations, identifies discrepancies, and supports financial decisions made by people or AI agents.

There are still unanswered questions. SpendRule has not publicly disclosed how much money its customers have recovered, its revenue, or the percentage of billing discrepancies its software identifies accurately.

Those metrics will matter as the company expands into other industries.

For Cuban, whose healthcare investments include Cost Plus Drug Company, the bet fits a broader push to make healthcare spending more transparent. Reuters reported earlier this month that Cuban continues to advocate greater transparency in healthcare contracts and pricing.

SpendRule’s ambition reaches beyond finding billing mistakes. It wants to make contract enforcement an ongoing software function, rather than a task companies revisit after discovering they’ve already overpaid.