X is rolling out a closed beta for a new pay-per-use pricing model for its API, inviting more developers to apply. This initiative follows a significant overhaul of its API pricing structure that began in early 2023, which included the termination of free access and the introduction of various paid tiers. The new model allows developers to pay based on their actual usage, with a detailed cost breakdown available on X's API page. This change is particularly relevant as many developers found the previous tiered pricing system unaffordable, leading to the discontinuation of several applications. By offering a $500 voucher to selected developers, X aims to encourage the creation of innovative applications on its platform, potentially regaining developers who left due to previous pricing constraints.