# Can I run Llama 4 Scout on Apple M3 Ultra (256GB)?

Updated: 2026-06-15

**Yes, it runs.** Runs at Q4_K_M using ~64.2 GB of ~192 GB usable. You have room for Q8_0 for higher quality.

- Model: 109B (MoE, 17B active), Q4_K_M 60.87 GB
- Device: 256 GB unified, ~192 GB usable for weights
- Needs ~64.2 GB at Q4_K_M; recommended quant: Q4_K_M
- Best tool on macOS: LM Studio
- Command: `ollama run llama4:scout`

Estimate. Method: weights + KV cache + ~0.8GB overhead. Sources: https://ollama.com/library/llama4, https://ollama.com/library/llama4/tags, https://huggingface.co/unsloth/Llama-4-Scout-17B-16E-Instruct-GGUF, https://huggingface.co/meta-llama/Llama-4-Scout-17B-16E-Instruct.

More: https://localmodel.run/can-i-run/llama-4-scout/apple-m3-ultra-256gb