AI Matters
Why it matters
OpenAI updates GPT-5.6 Sol and expands free ChatGPT access
The Decoder OpenAI improves GPT-5.6 Sol in ChatGPT and restricts free users to its weakest model
OpenAI updated its GPT-5.6 Sol model with a reasoning slider and expanded unlimited text chats with the smaller GPT-5.6 Luna model to free users.
Why it matters
Free users get unlimited text chats with a new model, while paid users get more control over how deeply the AI reasons before answering.
Latest brief · Aug 7, 2026