ChatGPT Free Users Get Unlimited Chat, New GPT-5.6 Models

OpenAI has released a major update for ChatGPT, removing text chat limits for free users. This means free and 'Go' tier users will no longer face interruptions when they reach specific chat limits. What's interesting is that a new 'GPT-5.6 Luna' model will become the default for these free users, replacing the older 'GPT-5.5'. A new 'Think' button has also been added, which prompts the AI to deliberate more deeply on complex questions. This update is available across web, mobile, and desktop platforms. Plus and Pro subscribers will also receive an updated 'GPT-5.6 Sol' model starting August 7th. This model integrates both instant and thinking response capabilities. The bottom line is that approximately one billion people use ChatGPT every week, and these changes aim to improve the experience for a large user community.