OpenAI introduced GPT-6 Sol and Luna, extending the family beyond Astra. The announcement positions the models for everyday work with different trade-offs between capability and cost.

Context

A larger menu is useful when teams know what their tasks require. A bounded operation may benefit more from speed and predictable cost than from maximum reasoning depth. Comparing completed outputs, correction rates, and total usage helps identify that point. The most capable family member need not be the default for every stage of a workflow.

Sources & authors

  1. Introducing GPT-6 Sol and Luna
    OpenAI · September 22, 2026
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