GPT-6 Sol and Luna launch with API prices 50% lower

Derrick Choi @derrickcchoiOriginally posted 2026.09.23

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GPT-6 Sol and Luna are here! We’re bringing advances from Astra to faster, more affordable models, with API prices 50% lower than GPT-5.6 promo pricing. Our team has been focused on cost and efficiency. This makes more workflows practical to run every day and gives all builders more room to experiment. On AutomationBench, Sol at xhigh outperforms Claude Opus 5 at max for just 9% of the cost per task!

This post quotes another post: “OpenAI releases GPT-6 Sol and Luna with 50% lower API prices”