Comparing mental health diagnostic instruments like PHQ-9 and MDQ can be a complex process. It requires a keen understanding of the questions and careful interpretation of the responses. Harmony, a revolutionary software developed for psychologists, seeks to simplify these comparisons. Through the use of large language models and natural language processing, Harmony can generate a percentage match between each item in the PHQ-9 and MDQ, making the process of harmonisation more accurate and efficient. Harmony isn’t just for comparing the likes of PHQ-9 and MDQ, but it has been specially designed to handle multiple instruments from its database or any instrument that the user may need it to handle. This versatility has the potential to bring about a remarkable change in psychology research, allowing for more effective and in-depth cross-study comparisons. By automating the tedious harmonisation process, Harmony allows researchers to focus solely on their research objectives. The PHQ-9 and MDQ comparison is just one of the many possibilities. PHQ-9 vs MDQ is just a start, Harmony invites more extensive utility by allowing comparisons in multiple languages. Such global usability of Harmony accentuates its potential in facilitating worldwide collaboration and superior insights into mental health diagnostics. Incorporating advanced generative AI models, Harmony is the tool to use for comparing PHQ-9 and MDQ along with similar other diagnostic instruments. So, take advantage of Harmony, as it gears you up for a comprehensive and streamlined exploration of the PHQ-9 vs MDQ and other similar comparisons.