Comparing Fable and 5.6 Using the "Grit" Formula

robleclerc · x · 2026-07-09

The tweet borrows the formula from the book Grit (Achievement = Skill x Effort; Skill = Talent x Effort) to compare two AI models: Fable and 5.6 (suspected to be Claude 3.5 Sonnet).

Based on the quoted perspective, Fable is higher in "talent," excelling at understanding intent and writing elegant code. Meanwhile, 5.6 wins on "effort"—acting like a blunt instrument that grinds through tasks with extensive testing and exception handling. Its code might not be as sleek, but it ensures the job gets done.

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