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text model · Laguna · macOS

Can I run Laguna XS 2.1 on Apple M5 Pro (48GB)?

Compatibility verdict VRAM threshold engine
Yes, it runs GPU accelerated

Yes. Laguna XS 2.1 runs on Apple M5 Pro (48GB) at Q4_K_M (~22.2 GB of ~32 GB usable).

Needs ~22.2 GB Device usable ~32 GB

Runs at Q4_K_M using ~22.2 GB of ~32 GB usable.

That figure is at a 4k context and moves about ±15% as context length changes. Apple M5 Pro (48GB) leaves ~9.8 GB of headroom.

Q4_K_M needed
~22.2 GB
Usable on device
~32 GB
Device memory
48 GB
Best quant
Q4_K_M
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Which quant fits

Quant ladder vs ~32 GB usable
Q2_K
~16.2 GB
Q3_K_M
~18.5 GB
Q4_K_M
~22.2 GB
Q5_K_M
~26 GB
Q6_K
~29.6 GB
Q8_0
~38.2 GB
FP16
~69.2 GB
The line marks Apple M5 Pro (48GB)'s ~32 GB budget; rungs past it are too large.

Run it

Install commands macOS

Loads the Q4_K_M weights.

Ollama
$ ollama run laguna-xs-2.1
Model Laguna
Parameters
33.4B (MoE, 3B active)
Q4_K_M size
20 GB
Q8_0 size
36 GB
Context
256k
Ollama tag
laguna-xs-2.1
Full Laguna XS 2.1 requirements →
Device macOS
Memory
48 GB unified
Usable for weights
~32 GB
Best runtime
MLX direct / Ollama (MLX backend)
Best models for Apple M5 Pro (48GB) →

You could also run

Run Laguna XS 2.1 on other hardware

FAQ

Can Apple M5 Pro (48GB) run Laguna XS 2.1?

Yes. Laguna XS 2.1 runs on Apple M5 Pro (48GB) at Q4_K_M (~22.2 GB of ~32 GB usable).

How much memory does Laguna XS 2.1 need?

Apple M5 Pro (48GB) has room to spare. At Q4_K_M the weights are ~20 GB; with KV cache and runtime overhead, budget ~22.2 GB at a 4k context. It is a Mixture-of-Experts model (33.4B total / 3B active), so all experts must stay in memory; memory tracks total params, not active params.

What is the best tool to run Laguna XS 2.1 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.