ChatGPT is a large language model-based chatbot that is freely accessible to all, including psychotherapists and individuals with mental illnesses. The author analyzed three detailed chats with ChatGPT to assess its usefulness in psychotherapy. The results suggest that ChatGPT can serve as a useful supplement to psychotherapy, especially for people with mental health issues who have not yet sought professional help. However, the information provided is one-sided, and ChatGPT lacks the depth and diversity of psychotherapeutic approaches. It primarily focuses on cognitive behavioral therapy (CBT), mindfulness-based therapy, and skills training, while not mentioning other approaches such as psychodynamic therapy, humanistic therapy, or systemic therapy. ChatGPT also has limitations in understanding complex concepts like irony and maintaining long conversations, which can hinder therapeutic bonding. Additionally, it does not provide a comprehensive understanding of mental health issues or offer personalized treatment plans. While ChatGPT can provide empathetic responses and a safe environment for users, it cannot replace professional psychotherapy. The author emphasizes the need for further research and regulation to ensure the ethical use of ChatGPT in psychotherapy. Despite these limitations, ChatGPT can be a useful tool for psychotherapists to gain second opinions, learn about different approaches, and provide additional support to patients. However, it is important to recognize that ChatGPT is not a substitute for professional psychotherapy and should be used in conjunction with it. The author concludes that ChatGPT has potential as a supportive tool in psychotherapy but must be used with caution and under the guidance of a professional therapist.ChatGPT is a large language model-based chatbot that is freely accessible to all, including psychotherapists and individuals with mental illnesses. The author analyzed three detailed chats with ChatGPT to assess its usefulness in psychotherapy. The results suggest that ChatGPT can serve as a useful supplement to psychotherapy, especially for people with mental health issues who have not yet sought professional help. However, the information provided is one-sided, and ChatGPT lacks the depth and diversity of psychotherapeutic approaches. It primarily focuses on cognitive behavioral therapy (CBT), mindfulness-based therapy, and skills training, while not mentioning other approaches such as psychodynamic therapy, humanistic therapy, or systemic therapy. ChatGPT also has limitations in understanding complex concepts like irony and maintaining long conversations, which can hinder therapeutic bonding. Additionally, it does not provide a comprehensive understanding of mental health issues or offer personalized treatment plans. While ChatGPT can provide empathetic responses and a safe environment for users, it cannot replace professional psychotherapy. The author emphasizes the need for further research and regulation to ensure the ethical use of ChatGPT in psychotherapy. Despite these limitations, ChatGPT can be a useful tool for psychotherapists to gain second opinions, learn about different approaches, and provide additional support to patients. However, it is important to recognize that ChatGPT is not a substitute for professional psychotherapy and should be used in conjunction with it. The author concludes that ChatGPT has potential as a supportive tool in psychotherapy but must be used with caution and under the guidance of a professional therapist.