OpenAI 推出 GPT-6 Sol 與 Luna，API 價格較前代腰斬
Introducing GPT-6 Sol and Luna
摘要分析
2026 年 9 月 22 日 OpenAI 以 GPT-6 Sol 與 Luna 擴充 GPT-6 家族，兩者採與旗艦 Astra 相近的訓練方法，把專業工作、事實性、程式開發、電腦操作與對齊的進展帶到更快、更便宜的層級。因快取與推論效率提升，API 價格較 GPT-5.6 促銷價再降 50%：Sol 從每百萬 token 4／20 美元降至 2／10 美元，Luna 降至 0.10／0.50 美元。OpenAI 稱在商業流程測試 AutomationBench 中，Sol 以 Claude Opus 5 九分之一的成本取得更佳表現。Astra 仍為最高階；9 月 29 日再推出以 Astra 五分之一價格提供接近智慧的 GPT-6.1 Sol。
- GPT-6 Sol／Luna 上市，API 價格較前代減半
- Sol 定價 2／10 美元，Luna 0.10／0.50 美元
- AutomationBench：Sol 以 9% 成本勝過 Opus 5
- Astra 仍為最高階；9/29 加推 GPT-6.1 Sol
- 快取與推論效率是降價主因
On September 22, 2026, OpenAI expanded the GPT-6 family with GPT-6 Sol and GPT-6 Luna, trained with methods similar to the flagship GPT-6 Astra to bring its gains in professional work, factuality, coding, computer use and alignment to faster, more affordable tiers. Improvements in caching and inference let OpenAI cut API prices by 50% versus GPT-5.6 promotional pricing: Sol moves from $4/$20 to $2/$10 per million input/output tokens, and Luna from $0.20/$1.20 to $0.10/$0.50. OpenAI says that on AutomationBench, a test of business workflows across apps, GPT-6 Sol at xhigh effort outperforms Claude Opus 5 at max effort at 9% of its cost per task, while Luna improves on its predecessor by 5.4 points at 58% lower cost. Astra remains the top model for the most demanding work. A September 29 update introduced GPT-6.1 Sol, described as near-Astra intelligence at one-fifth of Astra's token prices.
- GPT-6 Sol and Luna launch with 50% API price cuts
- Sol at $2/$10, Luna at $0.10/$0.50 per million tokens
- Sol beats Claude Opus 5 on AutomationBench at 9% of the cost, per OpenAI
- Astra stays top tier; GPT-6.1 Sol followed on Sept 29
- Caching and inference gains drive the cuts
關鍵字：GPT-6OpenAIAPI 降價AutomationBench模型分級
來源原文：https://openai.com/index/introducing-gpt-6-sol-and-luna/
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