Metering infrastructure. Complete revenue platform.
Real-time event processing at any scale. LLM-powered configuration. Billing, subscriptions, quotations, revenue recognition — the entire revenue lifecycle running on financial-grade infrastructure.
Most teams are billing in production within a week.
Core Platform Features
Real-Time Event Metering
Ingest millions of events per day with sub-second processing. Every API call, token, compute cycle, and transaction is captured, timestamped, and ready for billing. Built on Redpanda for streaming reliability.
Automated Invoicing
Invoices generated automatically at every billing cycle. Credit memos, multi-currency support, and line-item detail that your customers' finance teams will actually trust. No manual reconciliation.
Subscription Management
Create, pause, resume, upgrade, downgrade — the full subscription lifecycle with automatic proration. Trial periods, contract enforcement, and termination fees. Hybrid models that combine subscriptions with usage-based billing.
Flexible Billing Models
Flat rate, tiered, volume, stairstep, package, matrix, formula — any pricing model, any combination. Define it in plain English or build it manually. Change it whenever you want without engineering.
Spend Controls
Threshold billing, subscription-level alerts, metric-level and dimension-level monitoring. Multi-channel notifications via email, SMS, and webhook. Prevent runaway costs before they hit your customers' invoices.
Payment Processing & Tax
Stripe, Adyen, and 10+ payment gateways. Smart dunning with retry logic to recover failed payments. Tax automation via Avalara integration. Tax-exempt customer handling. You're never locked into one processor.
Built to process billions of events. Accurately.
BillAI isn't a billing layer on top of a generic database. It's a purpose-built distributed system designed for financial-grade accuracy at real-time speed. Every event is captured, deduplicated, and processed with double-entry precision — whether you're handling thousands of events per day or billions.
Redpanda
Real-time event streaming. Zero data loss. Sub-second processing at millions of events per day.
TigerBeetle
Financial-grade double-entry ledger. Sub-millisecond transactions. Every billing calculation accurate to the cent.
ClickHouse
Analytics at scale. Billions of rows, instant queries. Real-time dashboards and reporting.
TimescaleDB
Time-series precision for usage tracking, billing patterns, and historical analysis.
15 Go Services
High-performance distributed processing. Independent scaling. Built for reliability.
Dragonfly + KVRocks
In-memory caching and persistent storage. Sub-millisecond lookups on pricing rules and customer state.
Every technology choice maps to accuracy, speed, or reliability — not just impressive names.
Describe your pricing. We'll build it.
BillAI's LLM Configurator translates natural language into complete billing configurations. Describe what you want to charge in plain English — BillAI generates the pricing model, metering rules, invoice logic, and spend controls automatically. This isn't a template picker. It's a configuration engine that understands billing semantics. Describe complex, multi-dimensional pricing models that would take weeks to code — and have them running in minutes.
Example configurations
"Charge $0.003 per input token and $0.012 per output token for GPT-4o. $0.0005 per token for GPT-3.5. Apply a 20% volume discount above 1M tokens per month. Minimum commitment of $500/month."
"$0.01 per API call for the first 100K calls. $0.005 per call for 100K–1M. $0.002 per call above 1M. Free tier of 1,000 calls per month. Bill monthly with 30-day payment terms."
"$2.50 per delivery within Zone A. $4.00 for Zone B. $7.50 for Zone C. 15% discount for customers with more than 500 deliveries per month. Surcharge of $1.50 for same-day delivery."
Simulate, compare, ship.
Pricing changes shouldn't require a leap of faith. BillAI's Pricing Lab lets you test new pricing strategies against real subscription data before a single dollar moves. Pick a subscription, adjust the pricing, generate a mock invoice, and compare it to the original. See exactly how changes affect revenue across your entire customer base.
- Run proposed pricing against real customer usage
- See how every invoice would change before you commit
- Compare current vs. proposed models side by side
- Push to production with one click when the numbers make sense
Derisk Pricing Launches
Launching a new pricing model? Simulate it first. Run your historical data through the new model and compare invoices line by line. Catch edge cases before your customers do. Available on Starter and above.
Iterate on Live Pricing
Already billing customers? Adjust pricing in the lab, compare new invoices against current ones, and push changes to production when you're confident. No engineering sprint, no deployment risk, no downtime. Available on Growth and above.
Late events? Wrong metrics? Already handled.
Reality doesn't cooperate with billing cycles. Events arrive late. Metrics need correction. Pricing changes retroactively. BillAI's self-healing engine handles it all automatically.
Events that arrive after an invoice has been generated are automatically reconciled. Pricing corrections are applied and reflected accurately. Backfill entire time ranges when your reporting infrastructure lags or experiences downtime. Every correction is audit-safe — the original data is preserved, amendments are traceable, and your financial records stay clean.
Late Event Detected
Backfill into the correct billing period
Recalculation Triggered
Recompute affected invoices automatically
Correction Propagated
Update downstream systems and notify stakeholders
Basic self-healing on Starter; full backfilling and amendment capabilities on Growth and above.
From quote to revenue. One system.
Every stage configured in plain English, running on financial-grade infrastructure. Click any stage to see how it works.
One platform handles every step.
From quote to subscription in one system.
Your sales team closes the deal. Then someone manually recreates the pricing in your billing system. Different numbers. Different terms. A week of back-and-forth to reconcile. BillAI eliminates that gap.
Create quotes, send them for approval, convert accepted quotes directly into live subscriptions with the exact pricing, terms, and contract conditions you agreed on. No manual re-entry, no mismatched configurations. Revenue starts at the quote — BillAI handles the entire lifecycle from there.
Build templates for common pricing structures. Set up approval workflows so the right people sign off before quotes go out. Manage contracts with enforcement rules and termination conditions. When a quote is accepted, BillAI creates the subscription automatically — pricing model, billing schedule, contract terms, everything flows through.
- Create, send, and track quotes with full pricing detail
- Quote templates for repeatable pricing structures
- Multi-step approval workflows
- Contract management with enforcement and termination rules
- One-click quote-to-subscription conversion
Available on Growth and Enterprise tiers.
Recognize revenue correctly. Automatically.
Usage-based revenue recognition is complicated. Deferred revenue, multi-period contracts, prepaid credits that get consumed over time — ASC 606 compliance requires getting every entry right. BillAI automates it.
Revenue schedules are generated automatically from your billing data. Deferred revenue is tracked and recognized as services are delivered. MRR and ARR metrics update in real-time. Reports break down revenue by period, customer, and product — giving your finance team the numbers they need without manual spreadsheet work.
For finance teams: close the books in days instead of weeks. Auditor-ready reports generated directly from your billing data. No more reconciling spreadsheets against your billing system — BillAI is the single source of truth for revenue.
- ASC 606 compliant revenue recognition
- Automated revenue schedules
- Deferred revenue tracking and reporting
- MRR / ARR tracking (all paid tiers)
- Revenue reports by period, customer, and product
MRR/ARR tracking on all paid tiers. Full revenue recognition on Growth and Enterprise.
Prepaid credits that actually work.
Prepaid credit models are the default for AI companies. Your customers buy credits upfront and consume them against usage. BillAI handles the full credit lifecycle — issuance, consumption tracking, balance management, and expiration.
Issue one-time credits for promotions or onboarding. Set up recurring credit grants that replenish automatically. Enable rollover so unused credits carry forward. Track consumption in real-time and alert customers when balances run low. Credits integrate seamlessly with every billing model and show up accurately on invoices.
- One-time credit grants (all paid tiers)
- Recurring credit grants (Growth and above)
- Rollover support (Business and above)
- Real-time balance tracking
- Low-balance alerts
Give your customers real-time visibility.
Your customers want to see their usage and spend in real-time. BillAI's customer-facing portal gives them exactly that — live usage dashboards, current billing period costs, and historical consumption data. Embed it in your product or provide it as a standalone portal.
Transparent billing builds trust. When your customers can see exactly what they're being charged for and why, support tickets drop and satisfaction goes up. Available on Growth and above.
See everything. In real time.
KPI dashboards that show billing performance, revenue trends, customer health, and usage patterns at a glance. Charts and visualizations that update in real-time as events flow in. No waiting for end-of-month reports.
Track MRR, ARR, churn, expansion revenue, and usage growth across your entire customer base. Drill down by customer, product, or time period. Export data for your own analysis. Available on all tiers.
Works with your stack.
Payment processing, tax automation, and more. Integrate with the tools you already use.
Coming soon: data warehouse export, ERP integrations (NetSuite, QuickBooks), CRM integrations (Salesforce).
Developer-first. Always.
Clean REST APIs. Comprehensive webhooks covering all 19 event types. Full event structure documentation. API keys with role-based access controls. Idempotent event ingestion so you never double-count. Integrate BillAI into your stack with code you'd actually want to maintain.
- Idempotent ingestion — send the same event twice, it's counted once
- Webhook retry logic with exponential backoff and delivery guarantees
- SDKs for Go, Python, and Node.js
- Full OpenAPI spec for code generation
- Sandbox environment with test data for integration development
Most teams complete integration in under a day.
Explore the API →curl -X POST https://api.billai.com/v1/events \
-H "Authorization: Bearer sk_live_..." \
-H "Content-Type: application/json" \
-d '{
"event_id": "evt_abc123",
"customer_id": "cust_456",
"event_type": "api_call",
"properties": { "model": "gpt-4o", "input_tokens": 1250, "output_tokens": 380 },
"timestamp": "2026-02-19T14:30:00Z"
}'Enterprise-grade security.
Encryption at rest and in transit. Role-based access controls with granular permissions. Comprehensive audit logging for every billing action. User management with team invitations and permission scoping. Your billing data is protected at every layer.
Migrate in days, not months.
Switching from Stripe Billing, a homebrew solution, or another platform? BillAI is designed for fast migration. Import your customer data, configure your pricing models in plain English, and start processing events — most teams are live in production within a week.
Start in the sandbox with test data to validate your billing configuration before going live. Run BillAI in parallel with your existing system during migration — compare invoices side by side until you're confident. When you're ready, cut over cleanly.
Import existing customers and subscription data via bulk import
Configure pricing models in the sandbox (LLM Configurator or manual)
Send test events and validate invoice accuracy
Run parallel billing to confirm parity
Cut over to production when ready
No lock-in. No long-term contracts. If BillAI isn't right, you haven't lost months of integration work.
Ready to see it working?
Your sandbox is free. Build your pricing model, test your event stream, and see every feature in action. No credit card, no time limit.