Model News
ChatGPT lifts text limits for free users on GPT-5.6 Luna
By Arjun
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7 Aug 10:08 AM
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Via TechCrunch
OpenAI is making GPT-5.6 Luna the default ChatGPT model for Free and Go users, replacing GPT-5.5, and says unlimited text chats plus a Think button for harder questions arrive next week. Limits remain for files, images, voice, and image generation. Plus and Pro users already get a chat tuned GPT-5.6 Sol with a thinking slider that trades speed for deeper effort. Internal tests claim factual errors fell 62 percent for Luna and 68 percent for Sol versus GPT-5.5 Instant. Why it matters: a current generation model becomes the free default at billion user scale. Caveat: the Sol chat tune is separate from Codex and Work.
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