Artificial Intelligence (AI) has been promised to revolutionize healthcare since the early 2000s, but its impact has been minimal. However, with the launch of ChatGPT in late 2022, a new era of AI has begun. This two-part article explores the potential of this new AI to radically change healthcare, empower patients, and redefine the doctor-patient relationship. It also compares the limited power of the two earliest generations of AI against the near-limitless potential of the latest version.