OpenAI's Sol and Luna join GPT-6 family: better than GPT-5.6 at half the price
stevenheidel · x · 2026-09-23
OpenAI staff member stevenheidel welcomed GPT-6 Sol and Luna to the GPT-6 family, saying they beat GPT-5.6 while costing 50% less thanks to improvements in caching and inference. A restatement confirming the official launch.
Related event: OpenAI Launches GPT-6 Sol and Luna at Half the Price(48 posts)→
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