Laguna S 2.1
Laguna S 2.1 loads in 96 GB at Q4_K_M and is comfortable from 128 GB of memory, Macs included from the MacBook Pro M5 Max 128GB. Below: the full memory math, the cheapest card that runs it well, and the fastest machine we track.
Memory math
KV = fp16 estimate (q8_0 cache roughly halves it). "Comfortable" = weights + KV within the engine's tiered budget (~70-85% of memory).
Hardware snapshot
More Laguna models
Frequently asked questions
How much memory does Laguna S 2.1 need?
96 GB for the Q4_K_M weights, plus ~6.0 GB of KV-cache at 16k context — about 102.0 GB total. Comfortable from 128 GB of VRAM or unified memory.
Does Laguna S 2.1 run on a Mac?
Yes — from the MacBook Pro M5 Max 128GB (~22 tok/s est.). Unified memory means the RAM budget is the only limit.
What is the cheapest GPU for Laguna S 2.1?
The AMD Ryzen AI Max+ 395 (Strix Halo) is the cheapest tracked card that runs Laguna S 2.1 comfortably — ~10 tok/s est. at ~$3,847 used (as of 2026-07-31).
Cite this page
ModelFit: Laguna S 2.1 — specs, memory math and hardware verdicts. https://modelfit.io/models/laguna-s-2.1/ (dataset updated 2026-09-03, CC BY 4.0).