An LLM is the center-piece of Vext; it is how you will generate, classify, code, essentially perform anything for you within your LLM pipeline.
To add an LLM to your LLM pipeline:
Go to your project
Add an action by clicking the "+" icon and select "LLM"
Select a model
Set Temperature; higher values will make the output more random, while lower values will make it more focused and deterministic.
Write your System Prompt
Hit Save