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text model · Olmo · macOS

Can I run Olmo 3.1 32B Instruct on Apple M4 Max (64GB)?

Compatibility verdict VRAM threshold engine
Yes, it runs GPU accelerated ~24 tok/s est.

Yes. Olmo 3.1 32B Instruct runs on Apple M4 Max (64GB) at Q4_K_M (~20.3 GB of ~48 GB usable).

Needs ~20.3 GB Device usable ~48 GB

Runs at Q4_K_M using ~20.3 GB of ~48 GB usable. You have room for Q8_0 for higher quality.

That figure is at a 4k context and moves about ±15% as context length changes. Apple M4 Max (64GB) leaves ~27.7 GB of headroom, room to step up to Q8_0 for higher quality.

Q4_K_M needed
~20.3 GB
Usable on device
~48 GB
Device memory
64 GB
Best quant
Q4_K_M
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Which quant fits

Quant ladder vs ~48 GB usable
Q2_K
~15.6 GB
Q3_K_M
~17.8 GB
Q4_K_M
~20.3 GB
Q5_K_M
~25 GB
Q6_K
~28.4 GB
Q8_0
~34.1 GB
FP16
~66.2 GB
The line marks Apple M4 Max (64GB)'s ~48 GB budget; rungs past it are too large.

Running cost · estimate

Power & economics est.
Power draw
~145 W
Electricity / 1M tokens
~$0.25
Pays for itself after
~13,996M tok

At ~$0.15/kWh and the estimated ~24 tok/s, a million generated tokens costs about $0.25 in electricity. Versus a hosted API at ~$0.5 per million tokens, the ~$3,499 Apple M4 Max (64GB) pays for itself after roughly 13,996 million tokens, so local hardware is mostly a fixed cost, not a per-token one. TDP is the peak draw, so this is an upper bound. Assumptions.

Run it

Install commands macOS

Pick your tool. All 3 load the same Q4_K_M weights.

Ollama
$ ollama run olmo-3.1:32b-instruct
llama.cpp
$ llama-cli -hf bartowski/allenai_Olmo-3.1-32B-Instruct-GGUF:Q4_K_M
LM Studio
$ lms get bartowski/allenai_Olmo-3.1-32B-Instruct-GGUF
Model Olmo
Parameters
32B
Q4_K_M size
18.14 GB
Q8_0 size
31.9 GB
Context
64k
Ollama tag
olmo-3.1:32b-instruct
Full Olmo 3.1 32B Instruct requirements →
Device macOS
Memory
64 GB unified
Usable for weights
~48 GB
Power draw
~145 W
Best runtime
MLX direct / Ollama (MLX backend)
Best models for Apple M4 Max (64GB) →

You could also run

Run Olmo 3.1 32B Instruct on other hardware

FAQ

Can Apple M4 Max (64GB) run Olmo 3.1 32B Instruct?

Yes. Olmo 3.1 32B Instruct runs on Apple M4 Max (64GB) at Q4_K_M (~20.3 GB of ~48 GB usable).

How much memory does Olmo 3.1 32B Instruct need?

Apple M4 Max (64GB) has room to spare. At Q4_K_M the weights are ~18.14 GB; with KV cache and runtime overhead, budget ~20.3 GB at a 4k context.

What is the best tool to run Olmo 3.1 32B Instruct on macOS?

LM Studio for a simple setup; mlx-lm for the most speed. vLLM is NOT a Mac tool, it is a CUDA/Linux serving engine. Unified memory is not a fixed VRAM slice; ~70% is usable for weights.

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Sources

Weights are measured from GGUF files; KV cache and overhead are computed, so totals can vary ~15% with context and runtime. Any tok/s is a bandwidth estimate. See methodology.