Molly White

maybe they outsourced to ChatGPT the job of checking there haven't been any other projects with names like terra/luna that would evoke extremely negative reactions

Tweet by OpenAI: Sol is our new flagship and a step function better than GPT-5.5.

Terra delivers performance competitive to GPT-5.5 at 2x lower cost.

Luna is our most cost-efficient model, delivering strong capability at our lowest cost.

Together, the GPT-5.6 family gives people and developers more choice in how they balance intelligence, speed, and cost.

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