> TechOpenAI has announced that ChatGPT Free users will soon receive unlimited text conversations powered by the new GPT-5.6 Luna model, replacing GPT-5.5 as the default AI for Free and Go accounts. OpenAI is also reintroducing the "Think" button, enabling ChatGPT to spend more time on complex queries that require deeper reasoning. GPT-5.6 Luna Brings Unlimited Text Chats to Free UsersOpenAI is expanding access to its latest AI model by making GPT-5.6 Luna the default experience for ChatGPT Free and Go users. 5.6 Sol much better in chat nowand unlimited text chat for free users! Improved Accuracy and New Features for Paid UsersAccording to OpenAI, GPT-5.6 Luna delivers more reliable factual responses than its predecessor.