Billing and payments insights from the team behind Kill Bill and Aviate
Subscription billing, usage-based billing, metering and payments for teams that run billing at scale.
How to choose a usage-based billing platform in 2026: 8 questions to ask
A usage-based billing platform turns API calls, AI tokens and other usage into invoice lines. Eight questions to ask before choosing one, from event ingestion and pricing models to prepaid credits, rating, payment providers and deployment.
Leaving SAP IS-M/MSD: subscription billing options for publishers before 2027
SAP ends mainstream maintenance for ECC at the end of 2027. What this means for publishers that run subscriptions on SAP IS-M/MSD, the three options for subscription billing, and what to check before choosing.
Two Minutes, Not Two Days: Billing Operations with Kill Bill, Kaui, and Aviate Admin
It’s 9:14 on a Tuesday and a customer wants to know why their invoice is wrong. It isn’t wrong. They upgraded from Starter to Business halfway through the month, so the invoice credits the...
Kill Bill has an MCP server now, the one we ship runs on your machine.
Overview Here's a prompt one of us typed into Claude Code a few days ago, against a real Kill Bill QA environment: Four steps, in English, with no API calls written by hand: i/ Create a...
Real-Time Usage Rating with Aviate — Any Event, Any Price, Any Business Model
The Problem We're Solving The world is full of businesses that need to charge for what customers actually use — minutes parked, gigabytes transferred, API calls made, kilowatt-hours...
Keeping Your Billing Platform Healthy: Introducing Aviate Health Monitoring
The Challenge of Monitoring a Billing Platform Monitoring a billing platform in production is different from running most other software systems: Standard observability tools —...
Two Days in Miami with ChaChing: Making Enterprise Billing Accessible
Over the past few years, we’ve had the chance to work closely with the team at ChaChing. It’s one of those collaborations that grew naturally over time through technical conversations,...
Announcing Kaui 4: Faster, Smarter, and Built for Enterprise-Scale Billing
Kaui 4 is here. As one of the Kill Bill cofounders, this release feels personal. Kaui has been part of Kill Bill’s identity almost from the beginning. Long before Kill Bill became the...
AI Usage Billing Made Simple with Kill Bill and Aviate
AI-based products introduce new billing challenges. Whether selling token usage, inference time, or API calls, providers must manage metering, prepaid credits, invoicing, and payments —...
Introducing the OSGI-Based Kafka Consumer Plugin for Kill Bill
This is a guest post by Prashant Kumar, Software Engineer at Cashfree Payments. In modern payment processing systems, managing high-throughput transaction requests efficiently is crucial....