SemiAnalysis(@SemiAnalysis_):Fable 5.2 is very token inefficient for certain tasks due to its increased persistence and proclivity for spawning subagents. For example, on GDPx materials science tasks, Fable 5.2 costs 89% more than Astra and uses 4.3x more output tokens to achieve effectively the same score. The price difference vs Gemini 4 Carbon is even more startling at 7.5x. (1/3)🧵

2026.11.10 17:41

Fable 5.2 is very token inefficient for certain tasks due to its increased persistence and proclivity for spawning subagents. For example, on GDPx materials science tasks, Fable 5.2 costs 89% more than Astra and uses 4.3x more output tokens to achieve effectively the same score. The price difference vs Gemini 4 Carbon is even more startling at 7.5x. (1/3)🧵