AI Therapist is an online tool developed to promote mental health support. Operating autonomously, the tool is available 24/7 and is designed to emulate a virtual therapist session. It provides personal therapeutic interactions and immediate assistance. As an AI-driven tool, it delivers cognitive behavioral therapy methods and interventions commonly found in traditional therapy. The aim is to help users achieve better understanding of their emotional well-being and foster positive mental health behaviors. The tool does not replace professional mental health service, rather, it strives to complement it by offering an accessible resource for immediate mental health needs.