ChatGPT Free Tier Gets Unlimited Chat as GPT-5.6 Sol Optimizes Conversational Experience
量子位 · wechat · 2026-08-07
OpenAI announced a major upgrade for free ChatGPT users: the default model is now GPT-5.6 Luna, with all chat limits completely removed. Meanwhile, GPT-5.6 Sol for Plus and Pro users has been specialized for chat, significantly improving factual accuracy and response quality.
Internal evaluations show that factual error rates in finance, healthcare, and law prompts dropped by roughly 62% for Luna and 68% for Sol compared to their predecessors. Additionally, subscribers now have access to an effort slider across platforms to adjust the model's reasoning depth.
This update signals OpenAI's renewed focus on everyday chat experiences, even as the broader industry heavily prioritizes coding capabilities.
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