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Can the Apple M3 Ultra (256 GB) run Leanstral 119B-A6B?

86 ptsExcellent (S) · 86 of 100 points: Model quality 33.0/45, Memory fit 25.0/25, Speed 15.0/15, Memory use 13.7/15

Yes, it runs well

Runs well. At Q6_K it needs about 114 GB of 192 GB usable, with an estimated speed of 46.2 tok/s.

Best quant
Q6_K
Generation speed
46.2 tok/s
Prompt processing
2,709 tok/s
First token (1K prompt)
0.4 s
Largest safe context
256K

Download Leanstral 119B-A6B

Original weights · Hugging Face

Full-precision files from Mistral AI, for fine-tuning, vLLM, Transformers.

huggingface.co/mistralai/Leanstral-2603 (opens in a new tab)

No sign-in needed.

Links checked 6 days ago against Hugging Face, Ollama and GitHub.

How the S grade is scored

Every result gets up to 100 points from four parts. The points decide the letter grade.

Model qualityEditorial quality tier of the model, scaled by the quantization or precision used.33.0 / 45
Memory fitFull marks when everything sits in GPU or unified memory; fewer when part spills to system RAM.25.0 / 25
SpeedGeneration speed against a 40 tokens/s target for LLMs, or render time against a target for image and video.15.0 / 15
Memory useRewards using the memory you have, so a bigger, better variant beats a tiny one that leaves most memory idle.13.7 / 15
Total86.7 / 10086 ptsExcellent (S) · 86 of 100 points: Model quality 33.0/45, Memory fit 25.0/25, Speed 15.0/15, Memory use 13.7/15

Grade scale: S 85+ · A 72+ · B 58+ · C 42+ · D 25+ · F under 25 points.

Every quantization on the Apple M3 Ultra (256 GB)

Quant Memory needed Available Speed Fit Grade · points Download
Q2_K 63.9 GB 192 GB 109 tok/s Runs well 70 ptsGood (B) · 70 of 100 points: Model quality 23.3/45, Memory fit 25.0/25, Speed 15.0/15, Memory use 7.7/15 All files (opens in a new tab)
Q3_K_M 74.7 GB 192 GB 86.1 tok/s Runs well 76 ptsGreat (A) · 76 of 100 points: Model quality 28.0/45, Memory fit 25.0/25, Speed 15.0/15, Memory use 9.0/15 All files (opens in a new tab)
Q4_K_M 89.0 GB 192 GB 66.6 tok/s Runs well 82 ptsGreat (A) · 82 of 100 points: Model quality 31.6/45, Memory fit 25.0/25, Speed 15.0/15, Memory use 10.7/15 All files (opens in a new tab)
Q5_K_M 101 GB 192 GB 55.0 tok/s Runs well 84 ptsGreat (A) · 84 of 100 points: Model quality 32.3/45, Memory fit 25.0/25, Speed 15.0/15, Memory use 12.1/15 All files (opens in a new tab)
Q6_K 114 GB 192 GB 46.2 tok/s Runs well 86 ptsExcellent (S) · 86 of 100 points: Model quality 33.0/45, Memory fit 25.0/25, Speed 15.0/15, Memory use 13.7/15 All files (opens in a new tab)
Q8_0 143 GB 192 GB 33.9 tok/s Runs well 87 ptsExcellent (S) · 87 of 100 points: Model quality 33.3/45, Memory fit 25.0/25, Speed 13.8/15, Memory use 15.0/15 All files (opens in a new tab)
F16 255 GB 192 GB — Won't run 9 ptsWon't run (F) · 9 of 100 points: Model quality 10.0/45, Memory fit 0.0/25, Speed 0.0/15, Memory use 0.0/15 Original weights (opens in a new tab)

Memory figures assume 8K of context. Longer conversations or documents grow the KV cache.

Other hardware that runs it

Estimates come from published hardware specs and our open formulas, not from running the model on your machine. Real speed varies with runtime, drivers and settings. Numbers marked “Measured” come from a linked benchmark.