OpenAI launches GPT-6 Sol and Luna, boasting lower cost and fewer mistakes

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Earlier this month, OpenAI launched GPT-6 Astra, which it heralded as its most powerful and capable model yet, and the “world’s best model” for a variety of activities, including computer work and coding. Now, the lab is expanding the GPT-6 generation with updated versions of the smaller Sol and Luna models.

“GPT-6 Astra introduced a new generation of intelligence; these models extend its benefits by making that intelligence more efficient and accessible,” the company writes.

The first models in the Sol and Luna series were introduced earlier this year, representing different tiers in OpenAI’s hierarchy of models. Sol is designed for complex tasks like coding, while OpenAI says Luna is more appropriate for clerical work — “high-volume tasks with a clear goal, like summarizing documents, extracting information, or answering quick questions.”

OpenAI is also emphasizing big improvements in efficiency and affordability — most notably, via a substantial price...

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