/ Guides

LLM API cost & model selection guides

Calculate with confidence · compare fairly · estimate accurately

All published guides share one verifiable data source (models.json) and one calculation basis — from "know how to calculate" to "know how to compare" to "know how to estimate": formulas and a worked example in the cost guide, whole-market price differences at fixed assumptions in the pricing comparison, and business-scenario parameters in the cost-scenarios guide.

API cost calculation

Model pricing & comparison

Scenario cost cases

AI automation workflows

Companion tools and conventions

· Cost calculator: enter your real usage and compare any selection of models side by side;
· Model library: a pricing profile per model with official sources; Model comparison: two models line by line;
· Data conventions (original currencies, tiers, reference rates, verification dates) are documented in the pricing methodology;
· All guides are also available in Chinese.