In blockchain services, units quantify API usage for billing. Chainstack uses Request Units (RUs), assigning a flat rate per API call to ensure predictable costs. Other providers utilize metrics such as Compute Units or API Credits, where charges vary based on the complexity of the request, often applying multipliers ranging from 10x to 80x.
Blockchain API providers calculate usage in distinct ways:
A single request costing 1 RU on Chainstack could translate to 20–120 API Credits on QuickNode, 10–60 CUs on Alchemy, or 1–10 units on Helius, amplifying expenses significantly for demanding applications.
Calculator is based on publicly available pricing data of Alchemy, QuickNode, Helius and Chainstack.