ChatGPT Free Users Get Unlimited Chats & GPT-5.6 Luna

OpenAI is now offering unlimited text chats to all free ChatGPT users. This experience is powered by the new GPT-5.6 Luna model, which is now the default for both Free and Go users. What's interesting is that both Free and Go users also get a new "Think" button. This allows them to choose extra reasoning power for complex questions. However, there will still be separate limits for files, images, voice, and image generation. For Plus and Pro users, they will gain access to the upgraded GPT-5.6 Sol model. This model is designed to give more compact and robust answers. These updates aim to make the latest models more widely available and improve the usefulness and reliability of the answers people get.