Houdini's goal is to enable web developers to extend the capabilities of CSS. It provides a suite of APIs that make it possible to create custom CSS features by scripting new behaviour directly into the browser rendering pipeline. This set of APIs offers great flexibility but also opens up many questions. In this talk we are going to look into the current state of Houdini in the year 2023. We are also going to touch on the topic of how the usage of Houdini APIs can affect performance of a web application. And analyse whether they can be used to achieve significant improvements - or maybe the opposite? Let us decide if CSS Houdini is ready for production!