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On August 6, 2026, OpenAI released a major ChatGPT update: a retuned GPT-5.6 Sol with 68% fewer factual errors and a new reasoning effort slider for paid users, plus GPT-5.6 Luna as the new free-tier default with unlimited text chats and a Think button. Covers the factual accuracy improvements, the effort slider UX, the free-tier expansion strategy, U18 safety evaluations, and the strategic implications for the frontier AI market.
ChatGPT hits 1 billion users, Anthropic files for IPO, Apple rebuilds Siri on Gemini at WWDC, SpaceX lands $30B Google compute deal, Microsoft unveils Majorana 2 quantum chip, and AI CEOs unite on biodefense.