Can I Run Cosmos 3 Nano on Apple M5 Pro?

Name: LLM Configurator — GPU VRAM Checker
Author: LLM Configurator

Written by Jakub Rusinowski · Last updated August 15, 2026

Yes. Cosmos 3 Nano needs 32.0 GB at BF16 and the Apple M5 Pro has 64 GB, leaving about 32 GB of headroom, at roughly 10 tok/s (estimated) with room for up to 128K of context.

The numbers

Model	Cosmos 3 Nano
Parameters	16B
Quantization	BF16
VRAM needed	32.0 GB
Apple M5 Pro VRAM	64 GB
Verdict	Runs
Max context	128K
Estimated speed	~10 tok/s

What to do next

Nothing to change — run it at BF16. If you want more capability, check whether the next size up also fits.

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Running Cosmos 3 Nano on this card:

Apple MacBook Pro M5 Pro

64 GB VRAM · 30 W board power

2026 prices are volatile — check the current listing.

Check price on Amazon

Buy vs. rent Cosmos 3 Nano

Buy the GPU

~$1,999

Apple M5 Pro · MSRP

Rent by the hour

from $0.55/hr

A100 (40 GB) class

At 2 hrs/day, buying (~$1,999) beats renting at $0.55/hr after about 5.0 years.

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Vast.ai $0.55/hr · typical low · varies

Rent on Vast.ai →

Cloud rates verified 2026-07 — estimates, and marketplace prices vary. Buying price is GPU MSRP only, not a full PC.

Other Cosmos 3 sizes on the Apple M5 Pro

Cosmos 3 Super — runs at a lower quant (128.0 GB)
Cosmos 3 Edge — runs (8.0 GB)

Cosmos 3 Nano on nearby hardware

NVIDIA L40S (48 GB) — runs
NVIDIA A100 80GB (80 GB) — runs

All Cosmos 3 sizes on the Apple M5 Pro | VRAM calculator for Cosmos 3 Nano | Apple M5 Pro GPU page | Check your hardware