Flexprice, an open-source billing infrastructure startup focused on AI-native and API-first enterprises, has raised $1.5 million in a seed funding round led by Shastra VC, with participation from Anupam Mittal and TDV Partners.
The New Delhi-headquartered startup builds usage-based billing infrastructure for AI companies, helping enterprises manage complex pricing models linked to token consumption, API calls, GPU usage, and other real-time compute workloads. The company said its platform currently processes over 20 billion events per month and supports AI businesses operating at enterprise scale.
The latest funding comes amid rising investor interest in infrastructure startups supporting the fast-growing AI economy. As generative AI adoption expands globally, software companies are increasingly shifting from traditional subscription pricing to usage-based and outcome-based monetization models, creating demand for more flexible billing systems.
The company said it recorded 6X revenue growth in the last quarter, while event processing volumes increased 20-fold over the past year. Flexprice added that the new capital will be used to accelerate expansion across the US and Europe, while also developing new AI-native finance products covering metering, revenue recognition, and financial reporting workflows.
Founded in late 2024, the startup operates teams across New Delhi, Bengaluru, and San Francisco. Its infrastructure is designed specifically for AI companies that require real-time billing capabilities instead of traditional flat-rate subscription systems.
"Billing is the hardest layer to get right, and the most consequential when you get it wrong, so that's where we started. But billing is just the foundation of a much larger stack that every software company runs on. The bigger picture is full revenue automation: from the first usage event to the last dollar recognized, giving AI companies the infrastructure to experiment, iterate, and scale their monetization in real time without being held back by systems that were never built for them," said Manish Choudhary, CEO, Flexprice.
The platform currently supports multiple pricing models, including pay-as-you-go, prepaid credits, volume-based pricing, seat-based subscriptions, and hybrid billing structures. It also integrates with payment providers such as Stripe, Adyen, and Razorpay.
The company said its infrastructure is built using technologies including Go, ClickHouse, Kafka, and Temporal to support high-throughput metering and event-driven billing pipelines.
Commenting on the investment, Avijeet Alagathi, Managing Partner, Shastra VC, said AI companies are increasingly facing challenges as traditional billing systems struggle to support rapidly evolving AI business models and complex usage-based pricing structures.
The broader AI infrastructure and monetization segment has attracted significant investor attention globally over the past year, as enterprises look for tools that can support real-time pricing, consumption tracking, and revenue management for generative AI applications.
According to the company, the market for AI billing infrastructure is currently estimated at nearly $4 billion and is growing at a compound annual growth rate (CAGR) of 20%.