Text summarization in AI is a task of condensing a text document into its most crucial information, often resulting in a shorter version. There are two main techniques: extractive and abstractive summarization.

Extractive summarization involves selecting key sentences or phrases from the original text. For example, a 1000-word article about a new technology could be condensed into a 250-word summary that highlights the main points and benefits.

Abstractive summarization uses advanced machine learning models to generate a new and concise summary that retains the essence of the original text. For example, a lengthy news article could be summarized into a brief headline and a few sentences that capture the main events and details.

The goal of text summarization in AI is to provide a clear and concise representation of the original text while maintaining its meaning and context.