The emergence of large language models (LLMs) has unlocked boundless possibilities, along with significant challenges. In response, we developed a mental health support chatbot designed to augment professional healthcare, with a strong emphasis on safe and meaningful application. Our approach involved rigorous evaluation, covering accuracy, empathy, trustworthiness, privacy, and bias. We employed a retrieval-augmented generation (RAG) framework, integrated prompt engineering, and fine-tuned a pre-trained model on novel datasets. The resulting system, Mentalic Net Conversational AI, achieved a BERT Score of 0.898, with other evaluation metrics falling within satisfactory ranges. We advocate for a human-in-the-loop approach and a long-term, responsible strategy in developing such transformative technologies, recognizing both their potential to change lives and the risks they may pose if not carefully managed.
@article{arxiv.2509.04456,
title = {Mentalic Net: Development of RAG-based Conversational AI and Evaluation Framework for Mental Health Support},
author = {Anandi Dutta and Shivani Mruthyunjaya and Jessica Saddington and Kazi Sifatul Islam},
journal= {arXiv preprint arXiv:2509.04456},
year = {2025}
}