Girlfriend GPT is an AI language model that serves as a virtual companion in chatrooms. It allows users to engage in conversations with various characters, ranging from fictional personas to real-life celebrities. Users can explore different scenarios, roleplay, and build relationships with these AI characters. The tool provides a diverse range of characters, including different genders, personalities, and NSFW options. It offers an interactive and immersive experience for users to connect, chat, and enjoy conversations with AI companions.