This information applies to all versions
DxO PureRAW does not work as a plug-in for DxO PhotoLab.
DxO PureRAW and DxO PhotoLab are two separate products designed for different workflows. However, they are based on the same DxO RAW processing engine and share the same core technologies (such as demosaicing, DeepPRIME denoising technologies, and optical corrections).
DxO PureRAW is primarily designed to integrate into an Adobe Lightroom Classic (plug-in) or Adobe Photoshop workflow, as well as into any workflow using your preferred RAW converter (including DxO PhotoLab). It serves as a pre-processing solution: process your RAW images in DxO PureRAW first, then export the enhanced files (DNG or JPEG/TIFF) to your preferred editing software for further adjustments.
If you are looking for a fully integrated workflow within a single application, DxO PhotoLab already includes the same core image processing technologies directly in the software.
Please note that this does not apply to the DxO PhotoLab ESSENTIAL Edition, which does not include all advanced processing technologies.