$3.$ What are foundation models in Generative Al$?$

A foundation model is a large Al model pretrained on a vast quantity of data that was "designed to be adapted" $($or fine$-$tuned$)$ to a wide range of downstream tasks, such as sentiment analysis, image captioning, and object recognition.

A foundation model is used to improve the performance of other models by fine$-$tuning other models, which can help them to learn how to generate more accurate and realistic content.

A foundation model is the first step in the generative Al process, responsible for creating the basic building blocks that are used to create more complex models.

A foundation model is used to create new types of software that can generate different types of content.