It is helpful to distinguish between the mechanics of variable-rate and fixed-rate lending models. Variable options serve as the current convention within the decentralized finance ecosystem; they are capital efficient and feature interest percentages that fluctuate in response to utilization metrics.

In contrast, fixed-rate lending allows users to secure a specific rate at the very start of the term. This approach ensures stable and predictable returns, making it a superior choice for institutional capital and strategic treasury management. While the industry has successfully optimized variable structures, the development of fixed-rate solutions represents the next major evolutionary step. These capabilities are arriving on the Radiant platform through the introduction of RIZ v2.