Abstract: Methods, systems, and computer programs are described for using a using an LLM-based conversation engine to treat a mental health disorder. The method includes obtaining data corresponding to a communication from a user device, determining a current user context based on the obtained data, determining based on the determined user context, whether to invoke the LLM, and based on a determination to invoke the LLM: determining a prompt that is to be provided to the LLM based on the determined user context, providing input data to the LLM, the input data comprising (i) the obtained data and (ii) the determined prompt, obtaining output data, generated by the LLM based on the LLM processing the provided input data, indicating a classification of the provided input data, and using the obtained output data to determine a therapeutic treatment for the user.