Ultimately I've never used Grok and don't want to support the company / CEO behind it, but even without that the 256k context window as given in this link means I won't look at it.

Model intelligence is great, but more often than not I found my issue is not that I would like 5/10% more intelligence, I'm already not even using the highest mode of thinking on most of my queries, and very important queries are better served by asking different model and ask another one to compare and help me decide.

My "big" issues are mostly centered about context loss and how they explode in flight when that happens sometimes without you or them noticing.

I don't know, depends on everyone's usage I guess, and 256k is not THAT shabby, but that's how I feel about it.