DeepSeek API + ???

Since Gemini has gone to complete shit, I'm considering DeepSeek. My use case is quite pedestrian. I use it for book analysis and learning (personal, not academic). NotebookLM still works fine, but that could change, just like Gemini. ​ I'd say I'm an intermediate user. My OS is Arch Linux + Hyprland, and I have Open WebUI installed, so I'm not a total newb and I've used LLM APIs before, but I've noticed that no one ever mentions it as an option for the DeepSeek API. ​ Before I pull the trigger and purchase