Which is the best GPU that works with After Effects, Premiere Pro and Mac Os?

i don't think the 10 (or 1000) series works with hackintosh yet, only up to 900 series.

Hackintosh is not an easy road, my friend! I do not envy your path ahead. I would not try it. Just out of curiosity, why are you using the Mac operating system? I mean, I understand not buying a Mac Pro from Apple, but I'd need a very compelling reason to not just build a Windows machine. For example, Adobe does not officially support their software on hackintosh.

The 960 is a decent GPU, but considering it's not the current generation, I'd try to get something like a 970 or 980 if you can (unless there's some reason they don't work with hackintoshes)..

All modern GPUs have OpenGL. Those are two very different things. Apples and Oranges. Now, if you were asking about OpenCL vs. CUDA, that's a bit more understandable. AMD cards use OpenCL and it's kind of the equivalent of NVIDIA's CUDA. But most GPU things do a lot better with CUDA than they do on OpenCL. Things like Octane, Cycles, and the like run much better on CUDA. Premiere's Mercury Playback was originally CUDA-only.

That being said, modern Mac OS's are not written for NVIDIA cards, so you might be better going with an AMD if you're dead set on Mac.