I'm quite certain Google and Meta are ahead of OpenAI, but they have significantly more to lose by making models publicly available that may potentially make things up or say something offensive. On top of which, this chat search experience seems like something Google would be pretty careful with considering how frequently they've been sued because they somehow reduced page traffic to random websites.

I've worked on projects where our ML model significantly outperformed the bulk of our operators. For structured data I've even had simple random forest models that we preferred to our operators, just because the model provided much more consistent decisions.