GPT-6 Sol and Luna: The Cost Claim Needs a Closer Look
OpenAI positions Astra for its strongest results, Sol for complex coding and professional work, and Luna for fast everyday work at scale. It says Sol and Luna have 50% lower API prices than GPT-5.6 promotional pricing, attributing the change to more efficient caching and inference. The public material gives a role map and a promotional comparison, but not the unit basis, access terms or workload evidence needed to turn that claim into a buying result. For an operator, the relevant comparison is a representative task run under consistent success criteria: output quality, elapsed time, retries and the bill shown for the completed work. The launch claim is useful as a test hypothesis, not as a completed saving.
Our takeOur take: compare Sol and Luna on the work you actually need done before treating a promotional rate as a cost-per-task advantage.
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