ShiZhen AI
Aug 7, 2026 · Industry Insights
OpenAI Unifies Paid ChatGPT with GPT‑5.6 Sol and Launches Free Unlimited GPT‑5.6 Luna Chat
OpenAI merges fast‑answer and deep‑reasoning capabilities into GPT‑5.6 Sol for Plus/Pro users, introduces unlimited text‑only chat with GPT‑5.6 Luna for free users, adds a reasoning‑intensity slider, reports internal error‑rate cuts (68% vs Instant, 62% for Luna), and leaves Work and Codex models unchanged.
AI productChatGPTGPT-5.6
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