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OpenAI releases GPT-6 Sol and GPT-6 Luna
What happened
OpenAI has released GPT-6 Sol and GPT-6 Luna, drawing on advances in GPT-6 Astra and positioning the models as faster and cheaper for work at scale. Greg Brockman says they inherit Astra's state-of-the-art performance in professional work, factuality, coding, computer use, and alignment. OpenAI has also improved caching and inference efficiency; API prices for Sol and Luna are 50% lower than GPT-5.6 promotional prices.
Why it matters
OpenAI brings Astra-level advances to faster, cheaper Sol and Luna models and states the API price reduction, giving readers a basis for assessing cost changes.
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