模型组合可降本54%且性能几乎不变

Highly recommend reading.

"Compared with pure Fable, Fable + Sidekick cuts cost by 54% while leaving the score nearly unchanged."

Combining models has all these hidden benefits. I think this pattern might also work with GPT-5.6 Sol + GPT-5.5 (or gpt-5.6 terra/luna).