After hammering Grok 4.5 nonstop for the last 24 hours, here's the verdict:
No other model comes close. Mythos is painfully slow by comparison, and I've executed every single idea in my head with zero friction.
I'm fully comfortable cancelling my Claude Max subscription and keeping Grok Heavy instead. Not kidding.
This feels fundamentally different. I was genuinely concerned when Claude announced they'd move Mythos to à la carte and pull it from Pro. Those worries are gone.
Thanks, xAI. I've been calling this shift all year, but it landed faster than expected.
Many people mentioned in the comments they want a native app so here it is: