I have always used what PopOS bundles. It used to be the proprietary driver, but ever since a certain driver version, they have switched to the Nvidia-made FOSS driver. Because nvidia stopped developing any sort of proprietary components in the driver and just made the FOSS driver instead, which became the “official” Nvidia driver in May 2025 i think.

Edit: Correction, only the kernel modules are all FOSS, while the userspace modules such as CUDA for example are still proprietary.

Speech note. Support a whole lot of models and you can even do some voice cloning.