OpenAI's LLM is special because it's open to the public. That's it. Other tech companies' internal LLMs are likely better. Google has a whole database of billions of websites and indexes directly at their disposal; I'm quite confident that they can outperform ChatGPT with ease. If Google was really afraid of ChatGPT running them out of business, they'd just release a public API for their own, better model. And they have a monopoly over the internet in terms of raw data and R&D; it would be virtually impossible for anyone else to compete.

Besides that, the whole "Google killer" thing is overreactive, IMO. The public api for ChatGPT doesn't retrain or even prompt-condition on new public internet data. So if you ask it about recent news, it'll spit out utter garbage. An internal version reportedly does seek out and retrain on new public internet data. But how does it find that data? With a neat tool that constantly crawls the web and builds large, efficient databases and indexes. Oh yeah---that's called a search engine.

So even if end users start using LLMs as a substitute for search engines (which is generally not happening at the moment, and it seems unlikely to be a concern in the age of GPT-3, despite what many people believe), most LLM queries will likely be forwarded to some search engine or another for prompt conditioning. Search engines will not die---they'll just have to adapt to be useful for LLM prompt conditioning in addition to being useful to end users.