API Relay Billing Auditor

Help developers verify real charges from third-party LLM API relays and catch hidden multipliers

Problem

Users top up an API relay and watch the balance drain much faster than expected; comparing front-end prices with billing logs reveals charges at 10x the advertised rate, with cache hits double-counted. Most developers can't reverse-engineer the effective multiplier by eye until losses pile up.

Solution

A local proxy or log analyzer that automatically captures relay requests and billing logs, recalculates the real multiplier against official pricing, and produces a discrepancy report versus the advertised price. It alerts immediately when a hidden multiplier exceeds a threshold.

Users

Solo and small-team developers using third-party API relays for LLM applications

MVP

Import common relay log formats or capture via a local proxy; auto-calculate expected charges per request using official prices; generate a multiplier discrepancy report; set thresholds for anomaly alerts

Revenue

Free tier for single-site basic checks; subscription for multi-site support, scheduled log sync, and daily reports

Why now

Price competition among relays makes hidden-multiplier issues frequent, yet users lack independent verification tools; a solo developer can ship this without licenses or hardware