Fable 5.1 matches Fable 5 performance at half cost, proving intelligence is getting cheaper
Angaisb_ · x · 2026-09-02
Amidst debates over rising model costs, the argument is made that while frontier models may become more expensive, the cost per unit of intelligence is falling. Supporting data shows Fable 5.1 scores the same as Fable 5 on the Artificial Analysis Intelligence Index but costs only half as much per task. Additionally, OpenAI's Sol is cited as a model that is both SOTA and affordable enough for daily driving.
Related event: Anthropic's Fable 5.1 Tops Benchmarks as Cost Debate Flares(7 posts)→
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