What Does the Model 'Multiplier' Mean?

Understand the meaning, calculation rules, and relationship to official pricing of model multipliers on API.YI

Quick Answer

Multipliers are an industry-standard way to calculate pricing. If you don’t want to deal with multipliers, simply check the Price column in the model list. We charge in USD. View all model prices: Model Pricing

Pricing Strategy

Model Type	Pricing Rule	Discounts
Text / Multimodal LLMs	Same as official pricing	Top-up bonuses + Group discounts
Image / Video models	Per-call pricing, special rates	See Model Pricing

Text model discounts come in two forms: top-up bonus promotions (extra credits when recharging) and group discounts (e.g., domestic models in a separate group with 0.88x discount).

Text Model Billing

Cost per call = Input Tokens × Input price + Output Tokens × Output price

For detailed billing information, see Pricing.

Basic Concepts

Two key terms to understand:

System Term	Meaning
Prompt	Input Tokens
Completion	Output Tokens

Multiplier Calculation Rules

Multipliers are relative values used to derive actual prices:

• Prompt Multiplier × 2 = Input price (USD / million Tokens)
• Completion Multiplier = Output price ÷ Input price (i.e., how many times the output costs compared to input)

Example Calculation

Using claude-opus-4-6 as an example:

Item	Multiplier	Calculation	Final Price
Input	Prompt multiplier 2.5	2.5 × 2 = 5	$5 / million Tokens
Output	Completion multiplier 5	5 × 5 (input price) = 25	$25 / million Tokens

Using this formula, API.YI pricing matches the official pricing exactly.

Image / Video Model Billing

Image and video models use per-call pricing, with special discounted rates for some models. Check the Model Pricing page in your dashboard for specific prices.

Summary

• Multipliers are an industry-standard pricing calculation method
• You don’t need to understand multipliers to use the service — just check the Price column
• Text models match official pricing; discounts via top-up bonuses and group discounts
• Image/Video models are billed per call with special rates — see Model Pricing