You can access ChatGPT 4 Turbo for free by using the official ChatGPT app or website at Chatgptgratis. Simply sign up for a free account, and choose the GPT-4 option (available to free-tier users under certain conditions). While full features are reserved for Plus users, OpenAI occasionally offers limited access to GPT-4 Turbo for free to let more people experience its speed and power.