We've Raised $500K to Build the Open-Source Billing Stack for AI and Agentic Companies

#go #stripe #opensource #webdev

The AI world is changing fast. Generative AI and agentic platforms are shipping at an insane pace, but one thing remains painfully slow—billing.

Most teams still lose weeks (or months) patching pricing logic, debugging invoice flows, and trying to make legacy billing tools work for AI or API-first models. These tools were never built for the new era of usage-based, credit-driven, or outcome-based pricing.

We’re fixing that.

Why We’re Building Flexprice

Flexprice is an open-source billing and metering platform designed for AI and agentic companies. Whether you’re running a GPU-intensive API service, a credits-based SaaS model, or hybrid subscriptions, you shouldn’t need to reinvent billing logic every time your pricing evolves.

Our mission is simple: pricing, packaging, and billing should never be a bottleneck.

We’re building:

Real-time usage metering – Track GPU hours, API calls, or any custom metric without building a billing team.
Multiple pricing models – Pay-as-you-go, credits, seats, or tiered pricing—out of the box.
Open-source control – Self-host, fork, or customize as you want. No vendor lock-in.
Transparent analytics and invoice visibility – For both customers and internal teams.

The $500K Raise

We just raised $500,000 in a round led by TDV Partners, with support from angel investors like:

Brij Bhushan (Cofounder, Magicpin)
Sandeep Gupta (Cofounder, Innovaccer)
Harshit Dwivedi (Founder, Aftershoot)

This funding isn’t about “growth at all costs.” It’s about building the most developer-friendly, open billing stack out there—and scaling our open-source ecosystem.

“The ability to move fast with pricing and scalable billing plays a critical role for AI and agentic teams. Flexprice is built to ensure billing is never the blocker,”
— Manish Choudhary, CEO

Why Open-Source Matters in Billing

Legacy billing tools don’t scale with modern pricing models. If you’ve ever built something with Stripe, you know how fast complexity creeps in:

Want credits + usage + tiered add-ons? You’re writing custom logic.
Want to change pricing mid-quarter? You’re debugging invoices at 2 AM.
Want transparency? Good luck with the black box.

We believe billing should be owned by developers, not locked behind opaque SaaS APIs.

With Flexprice, you can self-host, extend features, or contribute to the core. It’s your stack.

What’s Next

Here’s where the next phase of Flexprice is headed:

Scaling the open-source repo – We’re doubling down on GitHub contributions, developer guides, and templates.
Advanced billing workflows – More flexibility for credits, prorations, and real-time pricing experiments.
Developer-first distribution – Hackathons, technical blogs, and open demos.

We’re already powering AI-first startups like Wizcommerce, Simplismart, ThePubLive.com, and Verniq.ai, and we’re just getting started.

If you’re building AI, agentic, or API-first products, we’d love your feedback and contributions.

Check out our GitHub
Join our community

Star the repo if you believe in open billing infrastructure.