OpenAI Releases GPT-6 Sol and GPT-6 Luna
OpenAI has released GPT-6 Sol and GPT-6 Luna, adding two variants to the GPT-6 model family.
OpenAI has released GPT-6 Sol and GPT-6 Luna, expanding the GPT-6 family beyond the previously announced Astra model. The two variants are aimed at different balances of capability, speed, and cost.
The two releases
GPT-6 Sol is positioned as the higher-capability variant for demanding reasoning, coding, and professional workflows. GPT-6 Luna targets broader, more economical usage where throughput and price matter more than maximum capability.
The live rollout follows the GPT-6 Astra announcement and gives developers and ChatGPT users additional model choices. Availability can vary by product, plan, region, and rollout stage, so users should consult OpenAI's current model documentation before changing production integrations.
What builders should check
Teams evaluating Sol or Luna should verify the exact model IDs, context and output limits, API pricing, rate limits, and tool support in the official OpenAI pages. Benchmarks alone do not predict performance on every coding or agent workflow.
Sources
Status: Live release, September 22, 2026.
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