FOR ENGINEERING TEAMS

Ship billing without
becoming a billing company

Meter usage events and let Flexprice handle aggregation, pricing logic, and invoicing in real time, no custom billing workflows in your services.

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Try for Free

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engineering team photo smiling customers from simplismart

Trusted by 100+ AI and Agentic Teams

Everything you need to run billing in production

All the components needed to support real customers and real contracts

Transform product usage into
billing automatically

Security and compliance your customers expect

Define how your product measures usage and let Flexprice compute charges consistently across billing, limits, and reporting. Update metrics and pricing without rewriting services or pipelines.

Build billable metrics from raw product events
Recompute usage when pricing changes
Keep billing and entitlements based on the same data

Let teams change pricing
without you getting involved

Security and compliance your customers expect

Move pricing decisions out of release cycles while existing customers remain stable.

Update pricing without schema migrations
Apply customer-specific contract terms safely
Roll out plan changes without downtime

“We weren't willing to give up control of our data, but we still needed a real subscription tool. Flexprice on-prem was the only thing that worked for us."

Martin Sønderkær
CTO

Integrate monetization without
growing your backend

Integrate monetization without growing your backend

Embed billing as a dedicated layer instead of application logic. Flexprice manages pricing state, contracts, and invoicing workflows so your services stay product-focused.

Centralize pricing and packaging configuration
Support subscriptions, usage, and credits together
Generate invoices directly from billing state

Use billing data to control
product behavior

Drive access and limits from billing state instead of duplicating logic across services.

Enforce entitlements in real time
Apply usage limits and quotas
Support prepaid and committed usage

DEVELOPER EXPERIENCE

Built with your engineering team in mind

SDKs, integrations, support, and documentation built for engineering teams.

<50ms

<60ms

P99

Latency

25%

30%

Time saved compared to building in-house

10bn+

5bn+

API requests processed monthly

40k+

Events processed per second

Multi-SDK, MCP, and CLI support

Send events in your language, run workflows through your AI agent, or script it from the terminal.

Seamless Integrations

Connect Flexprice with your stack using webhooks, APIs, and native integrations. Works with Stripe, Razorpay, Snowflake, Hubspot, Quickbooks, CRMs, and more.

Dedicated Slack Community

24/7 support, SLAs and an active Slack + GitHub community give you confidence that your billing infra is always covered.

First Class Documentation

To reduce friction, our docs are fine-tuned to match your developer’s needs. From Intricate use-cases to features. All in one-place.

Single Source of Truth

Developer-First

Unified Dashboard

"

Flexprice saved us thousands of development hours that we would have spent building in-house.

Shaunak Srivastava
Founder, Truffle AI (YC W25)

How it actually works

Technical architecture built for flexibility and reliability

STEP 1

Your Product

100k+ events/second
Idempotent by design
Automatic deduplication

STEP 2

Flexprice API

Pure SQL queries
No proprietary language
Backfill support

STEP 3

Real-time Processing

<50ms p99 latency
Exactly-once delivery
Auto reconciliation

STEP 4

Your Systems

99.99% uptime SLA
Full audit trail
Multi-region failover

STEP 1

Your Product

100k+ events/second
Idempotent by design
Automatic deduplication

STEP 2

Flexprice API

Pure SQL queries
No proprietary language
Backfill support

STEP 3

Real-time Processing

<50ms p99 latency
Exactly-once delivery
Auto reconciliation

STEP 4

Your Systems

99.99% uptime SLA
Full audit trail
Multi-region failover

STEP 1

Your Product

100k+ events/second
Idempotent by design
Automatic deduplication

STEP 2

Flexprice API

Pure SQL queries
No proprietary language
Backfill support

STEP 3

Real-time Processing

<50ms p99 latency
Exactly-once delivery
Auto reconciliation

STEP 4

Your Systems

99.99% uptime SLA
Full audit trail
Multi-region failover

What billing actually costs engineering

The work isn’t launching billing, it’s everything that follows.

Without Flexprice

Months designing schemas, pipelines, and invoice logic

Send usage events and start billing

Every pricing change requires backend updates

Pricing updated without deployments

Maintain aggregation, retries, and reconciliation paths

Usage and billing state handled externally

Fix prorations, backfills, and customer corrections

Corrections computed automatically

Engineers generate finance and sales reports

Teams access billing data directly

Without Flexprice

With Flexprice

3-6 months: Build initial billing system

Hours: Integration complete

Ongoing: Pricing change needs engineering

Zero eng time: Business teams update pricing

Ongoing: Maintain data pipelines

0 maintenance: We handle data accuracy

Ongoing: Handle edge cases and corrections

Zero technical debt: No custom billing code

Ongoing: Custom reports for finance/sales

Self-service: Finance pulls their own reports

"

Our pricing changes every time we ship a new model, and that's a lot. Flexprice is the only tool that's kept up.

Navendu A.
Head of Business

Q: Can we self-host Flexprice? What runs in our infrastructure?

Yes. Flexprice is open source and can run in your own environment. You can keep usage data, billing state, and customer contracts inside your infrastructure while still using the APIs and UI to operate pricing and billing workflows.

Q: Do we still own our billing data?

Yes. Flexprice computes billing from the events you send, your product remains the source of truth. Because usage events and customer state live in your system, you can reproduce billing, export data, or migrate without being locked into proprietary internal logic.

Q: How customizable is the billing logic?

Flexprice is designed to be extended. You define metrics, pricing rules, and entitlements without modifying application code, and because it's open source you can adapt behavior or add integrations instead of working around a closed system.

Q: What changes in our codebase after integrating Flexprice?

Instead of maintaining aggregation jobs, pricing calculations, and invoice workflows, your services emit usage events and query billing state when needed. The product logic stays the same you remove monetization logic rather than rewriting core features.

Q: How do we test pricing and billing changes safely?

Because billing is derived from event history, you can replay events and validate pricing behavior before applying it to customers. This lets you evolve pricing without maintaining multiple billing code paths.