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Sep 16, 2026 · Industry Insights
OpenAI Retires GPT-5.5 as GPT-6 Sol Rumors Surge Before Major Release Week
OpenAI announced GPT-5.5 deprecation starting October 14, launched gift cards for subscription access, and executives teased a major release week, while user reports indicate GPT-6 Sol is already in gray-scale testing with strong reinforcement learning performance and speed advantages over Anthropic's Opus models.
GPT-5.5GPT-5.6 SolGPT-6 Sol
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