gpt-oss 120B › Apple M2 Ultra (76-core GPU)

gpt-oss 120B on the Apple M2 Ultra (76-core GPU)

Best measured: 79.7 tokens/s generation and 1,245 tokens/s prompt processing (MXFP4, Metal, FA on).

For comparison, our size-scaling estimate for this combination is 100 tok/s.

Every run

Quant	Backend	Generate tok/s	Prompt tok/s	Test	Build / by / notes	Source
MXFP4	Metal FA on	79.7	1,245	tg128	ggerganov llama-bench model column: gpt-oss 120B MXFP4 MoE	llama.cpp discussion #15396

tg128 = generating 128 tokens; pp512 = reading a 512-token prompt (llama-bench). LocalScore averages several prompt and output lengths, so its numbers run lower than tg128.

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