RoBERTa is a powerful language model developed by Facebook AI that builds on the success of BERT. It stands for "Robustly optimized BERT approach" and is designed to understand and generate human-like text. By training on a larger dataset and using different techniques, RoBERTa improves the model's ability to grasp context and nuances in language, making it more effective for various natural language processing tasks. One of the key features of RoBERTa is its use of dynamic masking during training, which helps the model learn better representations of words in different contexts. This allows RoBERTa to excel in tasks like text classification, sentiment analysis, and question-answering, making it a valuable tool for researchers and developers in the field of artificial intelligence.