I think it's far more likely they're building off some open source foundational models, rather than doing one from scratch OR using GPT under the hood. If it w

I think it's far more likely they're building off some open source foundational models, rather than doing one from scratch OR using GPT under the hood. If it was the latter, don't you think we'd hear about how "Grok is on par with GPT"? But you don't, people think it's not as good (but funnier?)