Why OpenAI unified ChatGPT's reasoning andInstant responses
openai updated gpt-5.6 sol to unify instant and deep reasoning in one model, while free users get gpt-5.6 luna and unlimited access. this simplifies chatgpt's architecture and democratizes higher-level reasoning.
openai updated chatgpt, merging instant and deep reasoning modes into a single gpt-5.6 sol model for paid users to provide consistent, context-aware responses without switching tools. for the first time, free users receive access to gpt-5.6 luna with unlimited text chats and a 'think' button to trigger higher-level reasoning for complex queries. a new reasoning slider also lets paid users control how much computational effort the model applies to a task. these updates signal a move away from specialized models toward unified systems that handle both speed and depth, raising the baseline capability for free users.