Pricier Models Can Be Cheaper: Smart Models Cut Rework
brandon_galang · x · 2026-07-04
The author challenges the notion that using Sonnet 5 is cheaper than Opus 4.8 or Fable 5, arguing that smarter models make better decisions, reducing rework and exploration, which makes them more cost-effective overall. Noting that Sonnet 5 Max is pricier yet less effective than Fable 5 Low, they recommend evaluating model performance based on task horizon to optimize costs.
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