The latest date covered by an AI model's built-in training knowledge.
It is the AI's textbook deadline. After that day, nobody slipped new pages into its locker.
Check it before asking about recent news or prices. RAG can bring it newer facts.
LLM
The knowledge cutoff limits how current an LLM's built-in knowledge is.
Pretraining
The dates of pretraining data set the knowledge cutoff.
RAG
RAG can give the model facts from after the knowledge cutoff.
Hallucination
The model may make up answers about events after the cutoff.