They've all avoided loading up their LLMs with ads to this point. That is going to change dramatically over the next 2-3 years. All of them will be loaded with ads, and Google will partake as expected given their ad network & capabilities in that realm. They'll match GPT's ad roll-out.
where do I find the paid option? I can not find that on their product page.
There are only two options I can see; one "Available at no charge" and another one "Coming soon - For organizations"
Can you upgrade in the IDE? It would be strange that Google has a performance problem for paid users while I do not experience any such issues at all with Claude and Codex.