Can Apple M3 Ultra run MiniMax M3.1 Flash?

Q: Can Apple M3 Ultra run MiniMax M3.1 Flash?

Yes. Measured 25.3 tok/s generation on Apple M3 Ultra, via oMLX v0.7.2, oQ3e-mtp (MTP off). Source: https://omlx.ai/benchmarks/performance/m5fqe90r At Q4_K_M the weights are about 261.9 GB, more than 256 GB, so Q4_K_M doesn't fully fit without offloading part of the model to system RAM.

Yes. Measured 25.3 tok/s generation (oMLX v0.7.2, oQ3e-mtp (MTP off); source).

Every measured result for MiniMax M3.1 Flash on Apple M3 Ultra

Build	Quant / setup	Engine	tok/s
Mac Studio M3 Ultra (60-core GPU) 256 GB running MiniMax M3.1 Flash	oQ3e-mtp (MTP off)	oMLX v0.7.2	25.3	source

Memory: Apple M3 Ultra has 256 GB. MiniMax M3.1 Flash weights are about 261.9 GB at Q4_K_M (428B params × 4.89 bits ÷ 8, before context/KV cache). Arithmetic, not a measurement; long contexts need more. Check other quants in the VRAM calculator. At Q4_K_M the weights are about 261.9 GB, more than 256 GB, so Q4_K_M doesn't fully fit without offloading part of the model to system RAM.

Speeds are decode (generation) tokens/sec as reported by each source; quant, engine and context differ, so small gaps are noise.

All measured speeds for MiniMax M3.1 Flash: best home rig for MiniMax M3.1 Flash.

Other models measured on Apple M3 Ultra: DeepSeek R1 671B · DeepSeek V4.1 Flash · Mistral Medium 3.5 128B · Muse Spark Open 816B-A42B · Qwen3.8 27B · gpt-oss 20B

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