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Flexprice, an open source billing and metering platform purpose built for AI-native and API-first enterprises, has announced the successful close of a $1.5 million seed funding round. The round was led by Shastra VC, with participation from TDV Partners — who reinforced their commitment by doubling down on their initial investment — and Anupam Mittal, founder of People Group and one of India’s most prominent entrepreneurs.
This latest round builds on an initial funding milestone in July 2025, which was directed toward strengthening the engineering team, accelerating integrations with leading payment gateways, and deepening the company’s open source ecosystem. With this new capital, Flexprice enters a more ambitious phase of its growth journey.
The Problem Worth Solving
The rapid rise of AI-powered products has exposed a fundamental gap in software infrastructure. Modern AI companies price their offerings by the token, the API call, or the compute second — yet the billing systems most rely upon were designed for the flat-rate subscription economy of a previous era. This mismatch is not merely a technical inconvenience; revenue infrastructure accounts for roughly 7 to 10 percent of cost of goods sold, making it one of the most consequential and yet least modernised layers in the software stack.
Flexprice was founded in 2024 and is headquartered in New Delhi, with teams in Bengaluru and San Francisco. The company built its platform from the ground up to handle real-time usage ingestion, complex entitlement management, and continuously evolving pricing logic at enterprise scale.
Traction and Technology
The platform’s momentum speaks to the urgency of the problem it solves. Flexprice recorded 6X revenue growth in the last quarter, while its event processing volume scaled 20X over the past year to exceed 20 billion events per month.
Under the hood, the platform is built in Go, leveraging ClickHouse for high-throughput metering, Kafka for event-driven pipelines, and Temporal for workflow orchestration. It supports a broad range of pricing models — including pay as you go, prepaid credits, volume tiers, seats, and hybrid structures, with outcome-based pricing coming soon — alongside native integrations for Stripe, Adyen, and Razorpay.
What Comes Next
The fresh capital will fund two strategic priorities: accelerating global expansion across the United States and Europe, and developing new product surfaces that extend the platform beyond billing into metering, revenue recognition, and financial reporting through AI-native workflows.
The broader market opportunity is substantial. The AI billing infrastructure segment is estimated at $4 billion, growing at a 20 percent compound annual rate, while the wider SaaS billing market is projected to reach $20.3 billion by 2033.
With an open source, self hostable architecture that eliminates vendor lock in, Flexprice is positioning itself as foundational infrastructure for the next generation of software businesses — one where revenue operations move as fast as the AI products they support.
