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OpenAI Brings Unlimited Text Chats and New AI Models to ChatGPT Free Users

In August 2026, OpenAI says it’s removing text-chat limits for all ChatGPT users, rolling out this week and next, with GPT-5.6 Luna as the default for Free and Go (replacing GPT-5.5) plus a “Think” button for higher reasoning. Plus/Pro get GPT-5.6 Sol and a thinking slider, and an internal eval found factual errors 62% lower with Luna and 68% lower with Sol vs GPT-5.5-Instant.

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