When conducting psychology research, the need to harmonise questionnaires like the General Health Questionnaire (GHQ 12) and the CDC Behavioural Risk Factor Surveillance System Survey (BRFSS) often arises. Thankfully, the ‘GHQ 12 vs BRFSS’ comparison and harmonisation process is significantly simplified by using Harmony, an innovative tool specifically designed for researchers. It uses natural language processing and generative AI models to effectively compare and match items across these instruments. Harmony makes ‘GHQ 12 vs BRFSS’ comparison practical and seamless by providing a percentage match between each item in GHQ 12 and BRFSS. You can easily access the database and select instruments for comparison or upload your own instruments in a preferred format. The tool’s versatility extends to comparing items across multiple languages, making it a versatile instrument for global research projects. In assessing ‘GHQ 12 vs BRFSS’, Harmony alleviates the challenges of potential subjective biases during manual harmonisation. It accelerates the process by automatically reviewing PDFs of questionnaires and transcribing the questions for easy comparison. Whether you’re revisiting existing studies or conducting new research, Harmony provides an efficient, reliable way of comparing these two widely used psychological questionnaires.