API Arbitrage Calculator

See the real cost of Chinese LLM APIs at a glance

Problem

Developers face complex pricing from multiple Chinese LLM APIs (DeepSeek, Qwen, Doubao) with separate input/output pricing, cache discounts, and batch deals; they can't tell which is cheapest for their workload.

Solution

An online cost calculator: users input monthly token volume, input/output ratio, cache hit rate, etc., and it compares the total monthly cost across official APIs, suggesting cost-saving combos (e.g., Flash for simple tasks, Pro for complex).

Users

Chinese AI app developers, indie developers, tech decision-makers

MVP

Manual input of workload parameters; pre-loaded real-time price tables for 5-8 major Chinese APIs; monthly cost comparison bar chart; "cheapest combo" recommendation; export comparison.

Revenue

Free basic tier, premium provides price change monitoring, cost anomaly alerts, and batch scenario comparison.

Why now

The Chinese LLM price war is intense, price tables change frequently and aren't interoperable; developers need a neutral comparison tool, and vendors won't do cross-comparison.