Best privacy-friendly cloud-based LLMs

I’ve tried everything you mentioned. Lumo is currently among the best out there. It’s multimodal, whereas duck.ai falls quite short in that regard. What’s more, I think GLM 5.2 (the model behind Lumo 2.0 Max) is one of the best models on the market right now. I use Claude (Fable 5, Opus 4.6 and 4.8, and Sonnet 4.6 and 5) for work. These models remain the most reliable and give me the fewest headaches. Even so, for personal use, GLM 5.2 more than suffices. On top of that, NanoGPT offers GLM 5.2 TEE, if I recall correctly. Lastly, I used to rely on Brave Leo and Ask Brave. They remain excellent alternatives, as you point out.