because the plethora of models and versions is getting ridiculous, and for anyone who's not following LLM news daily, you have no clue what to use. There was never a "Google Search 2.6.4 04-13". You just went to google.com and searched.
"Custom Search JSON API:
The primary solution offered by Google is the Custom Search JSON API. This API allows you to create a customized search engine that can search a collection of specified websites. While it's not a direct equivalent to a full-fledged Google Search API, it can be configured to search the entire web."
In my experience it's essentially the same as Google Search if configured properly.