Gemini AI is Google's most advanced AI model to date, based on natural language processing like OpenAI's GPT-3 model. Gemini was created by Google and Alphabet using techniques like supervised learning on large datasets to train the model. While details on Gemini AI are limited, it generally works by collecting training data, using it to train a model via machine learning algorithms, and then deploying the model to generate responses based on new input data through inference.