Flex Raises $60 Million in Series B to Scale Its AI-Native Private Banking Platform for Mid-Market Businesses

Flex, a fast-growing U.S.-based AI-driven financial platform, has raised $60 million in its Series B funding round, strengthening its position as a next-generation “AI private bank” designed specifically for mid-market businesses. The round signals growing investor confidence in AI-driven financial infrastructure and the rising demand for intelligent money-management tools tailored to underserved business segments.

The funding will enable Flex to accelerate product development, deepen automation capabilities across its platform, and expand access for businesses seeking modern, intelligent alternatives to traditional treasury operations.

What Flex Does and Why It Matters

Flex markets itself as an AI-native private bank alternative focused on businesses generating between $3 million and $100 million in revenue — a segment often too large for basic SMB banking tools and too small for private banking.

The company integrates:

• AI-powered treasury management
• Automated financial planning and recommendations
• Integrated payments and banking services
• Forecasting tools for cash flow, expenses, investments
• Multi-bank account visibility
• Centralized financial intelligence

This model aims to bridge gaps left by legacy institutions that rely heavily on manual processes, limited personalization, and outdated data management systems.

A Funding Round That Signals Shifting Market Priorities

The $60 million Series B round builds on earlier investments and reflects the increasing market appetite for AI-first financial operations platforms. New and existing investors reportedly participated, with strategic backers emphasizing Flex’s potential to simplify financial decision-making for businesses with complex cash flows.

According to the company, the new capital will be used to:

• Scale its AI models and inference capabilities
• Expand engineering and product teams
• Enhance the platform’s banking and payment integrations
• Broaden its reach across the U.S. mid-market segment

An executive familiar with the funding shared (paraphrased):
“Businesses today need more than a bank account — they need constant financial intelligence. Flex is building the tooling to deliver that.”

A Platform Built for CFOs, Controllers, and Founders

Flex has grown rapidly by targeting mid-market companies often overlooked by mainstream fintechs. These businesses tend to rely on:

• Excel sheets
• Manual cash-flow reconciliation
• Disconnected accounting tools
• Limited real-time financial oversight

The company says its AI-driven approach offers continuous, automated visibility into a company’s financial health.

A Flex spokesperson noted:
“Our mission is to give every business the financial clarity and speed that was once reserved for large enterprises.”

Why AI Private Banking Is Emerging Now

Flex’s growth aligns with the broader adoption of AI-powered enterprise applications. Many mid-market companies have been slow to modernize their financial stack due to:

• Limited access to intelligent treasury tools
• Fragmented banking systems
• High cost of enterprise-grade software
• Manual processes in financial reporting
• Lack of real-time insights

AI private banks aim to reverse this by automating intelligence-layer tasks such as:

• cash flow forecasting
• risk assessment
• vendor payment optimization
• anomaly detection
• automated financial summaries

These capabilities appeal to CFOs looking to reduce operational complexity, while offering founders a clearer picture of financial trajectories.

Growing Competition in AI Financial Operations

Flex enters a competitive field as more companies build intelligent financial operating systems for mid-sized enterprises. However, Flex differentiates itself by positioning as a vertical AI private bank, integrating both smart analytics and embedded financial services within a single environment.

Its closest competitors include vertical AI finance platforms, corporate treasury tools, and newer AI-banking startups — though few offer the same level of end-to-end integration.

Investors believe Flex is positioned to scale quickly due to the massive gap in mid-market financial automation, which remains largely underserved.

Expansion Plans Ahead

With its new capital, Flex aims to expand its offerings across:

• Treasury intelligence
• AI-driven insights
• Smart payment routing
• Multi-account orchestration
• Automated reporting
• Personalized financial recommendations

The company is also expected to form additional partnerships with banks and financial institutions, enabling businesses to operate with more efficiency and precision.

A company executive said (paraphrased):
“We are committed to building a financial platform that understands businesses and adapts to them — not the other way around.”

Conclusion

Flex’s $60 million Series B marks one of the larger AI-focused fintech funding rounds in recent months. As businesses increasingly demand intelligent, real-time financial visibility, platforms that combine AI, embedded banking, and treasury automation are gaining prominence.

For the mid-market segment — often overlooked by traditional banking — Flex is positioning itself as a modern “AI private bank,” aiming to reshape how companies manage their financial operations.

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