OpenAI’s GPT-6 Sol and Luna arrived on September 22, 2026 with permanent pricing that cuts API costs by 50 percent versus the GPT-5.6 series. Sol runs at $2 per million input tokens and $10 per ...
OpenAI says GPT-6 Sol and Luna were trained with similar methods to those used to train GPT-6 Astra. Depending on the ...
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