ChatGPT brings unlimited text chats to free users with a new Think button
OpenAI is removing limits on text-based chats across ChatGPT, giving Free and Go users unlimited text conversations powered by the new GPT-5.6 Luna model, plus a new Think button for complex queries.Plus and Pro subscribers get an upgraded GPT-5.6 Sol model and a thinking slider to tune reasoning depth, and OpenAI says internal evaluations found factual errors down 62% for Luna and 68% for Sol versus GPT-5.







