Which LLM model is used in generative ai extractor or classifier - DU

I want to know which LLM model is in use for this two activities ( Generative Extractor and Classifier)

And if it’s a in-home LLM model can we use it in on premise

And if it’s a online LLM , has anyone have implemented Huggingface or Lamba2-3 LLM models on premise ?

My scenario:- I was building the POC for the client now In the last two days before the demo they said they want everything on premise, so basically the entire POC will be scrapped as I have used Gen Ai Extractor for literally every field,now some of you may think why not ml Extractor or form extractor, this is because the formats of pdf is really diffrent from each other and fix formatting cant be performed from there end also there are needs where I want Gen Ai specifically for certain task

This is the reason for me to use Gen Ai , but I and the client was happy with the accuracy we are getting with that , but now they add this point on it for doing all computation on premise

Now you may understand my scenario

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