On-device leaderboard: Apple's built-in model ranks 4th behind open source

JosephJacks_ · x · 2026-08-27

A new leaderboard benchmarking LLMs directly on iPhone reveals that Apple's built-in Foundation Model ranks 4th out of 10. Three open-source models outperform it, with the leader being a 1.2B parameter model (1.7 GB download). The evaluation runs a unified 596-item battery under real device limits, scoring based on a composite of IFEval, MMLU-Pro, and MATH accuracy.

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