Documentation

Intelligence API

Root cause, unit economics, simulation, profitability, forecast, alerts, reports.

5-minute Intelligence walkthrough

make demo → curl root-cause, unit-economics, and simulate — sample outputs in the API guide.

Gateway proxy

OpenAI-compatible proxy on :8080 — pre-check, stream kill, path activation.

Industry research

2026 billing & runtime control calibration report.

Strategic positioning

Dual-pillar narrative — guardrails plus monetization intelligence.

Quick Start

Run make demo locally — integration examples on the homepage.

Customers

Typical user types and how they integrate FluxMeter Lite — pre-request checks, hierarchy reserve, soft alerts, and billing queries without a warehouse.

API Reference

Full HTTP reference — budget, ingest, billing queries, streaming holds, Intelligence.

OpenAPI

Machine-readable spec served at /openapi.yaml on this site.

Integrations

Connect to Stripe, Lago, Orb, Metronome, and more.

Tiered pricing

Flat, volume, and graduated pricing — Lite and Full paths.

Design rationale

Architecture decisions: Flink aggregation, Lua deduction, idempotency.

Load testing

Benchmarks from 10K to 1M events/sec.

Changelog

Complete engine release history from v0.1.0 to the latest.

Market map

Four layers — infra, observability, metering, intelligence — and where FluxMeter sits.

FAQ

Common questions about metering, self-hosting, and billing export.

Comparisons

How FluxMeter relates to OpenMeter, Lago, and other tools.

vs OpenMeter

Compare FluxMeter and OpenMeter for LLM usage tracking. FluxMeter focuses on pre-request budget enforcement; OpenMeter on usage collection and metering infrastructure.

vs Lago

Compare FluxMeter and Lago for AI token billing. FluxMeter enforces budget before each LLM call; Lago handles subscriptions, invoicing, and usage-based billing.

Blog

Technical articles on agent cost control and LLM billing patterns.