| **S2** | Best open reasoner | DeepSeek-R1 full (or successor open reasoner) | similar large |
| **S3** | Best open coding / SWE open weight | Top open code MoE or dense (e.g. GLM-5.x open, Qwen coder large — pick current SOTA open) | tens–hundreds GiB |
| **S4** | Strong open dense mid-large | Qwen3-72B or Llama 3.3 70B / Llama 4 open text variant | ~40–150 GiB quant / larger fp |
| **S5** | Efficient open frontier family | Gemma 4 large open variants | tens of GiB |
**1 TB portfolio rule of thumb**
```text
R spine (~30–55 GiB)
+ S1 one primary giant quant (~300–450 GiB) ← first strategic fill
+ optional S4 dense 70B (~40–80 GiB Q4)
+ embeds already in R
+ staging headroom
≈ 400–600 GiB typical first strategic fill
```
If a single full-precision S1 would exceed soft quota alone, **take the best
official compressed release** of that model and record the base id as the
capability identity.
**Do not** try to store S1 + S2 + S3 all at full precision on this NAS.
