OpenAI Releases GPT-6 Sol and Luna: 50% Cheaper API Pricing and Benchmarks
OpenAI has released GPT-6 Sol and GPT-6 Luna, 2 new models in its GPT-6 family. They sit below GPT-6 Astra, which launched earlier this month. OpenAI trained both with methods similar to Astra’s. The aim is to bring Astra’s advances to faster, more affordable models. Deployable today? Yes. Both models are live in the OpenAI API as gpt-6-sol and gpt-6-luna. They are API-only models, so there are no weights to self-host. Three tiers, one recipe The GPT-6 family now has 3 tier
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OpenAI has released two new models, Sol and Luna, positioned below its top-tier Astra model to offer faster performance at lower cost. Sol is designed for complex coding and professional tasks while Luna targets high-volume everyday work, with API pricing cut by 50% compared to their predecessors. Both models are available now through the OpenAI API and show competitive performance on various benchmarks compared to other models, while Luna's output pricing actually decreased by about 58%. The release also includes improved prompt caching for long-running agents, which can reduce costs on cached input reads by up to 90% and help applications respond faster.
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