ChatGPT is an artificial intelligence system capable of generating human-like responses to text inputs, primarily used for natural language processing tasks such as text generation, language translation, question-answering, and summarization. It can be utilized for automating and speeding up the test lifecycle by generating test data and test cases, improving testing quality and test coverage, overcoming knowledge constraints in specific technologies, and writing automated unit tests in various programming languages. However, its usage is limited by training data limitations, a need for additional validation, high complexity of integration in existing processes, and not being a replacement for traditional automated testing tools. ChatGPT can also be used to generate documentation, provide explanations, and assist in making decisions based on best practices. Its reliability will increase as AI technology continues to develop and improve.