OpenAI first shared GPT-6 Sol on September 22, 2026. It then released GPT-6.1 Sol on September 29, one week later. OpenAI frames GPT-6.1 Sol as a tweak to the Sol line, not as a full swap for GPT-6 Astra. OpenAI says GPT-6.1 Sol can deliver near-Astra performance for complex coding, computer use, and professional work, […]
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