Meta Muse Spark 1.3 Max matches Claude Fable 5 and GPT-5.6 Sol at 4-8x lower cost

AccBalanced · x · 2026-09-08

Per Vals AI's benchmark (shared by Scale AI CEO Alexandr Wang), Meta's Muse Spark 1.3 (Max) matches Claude Fable 5 and GPT-5.6 Sol on the Vals Index while costing 4x-8x less — a notable shift in frontier-model price/performance.

Related event: Meta Muse Spark 1.3 Max Matches Flagship Rivals at a Fraction of the Price(3 posts)→

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