Can I run Mistral Small 4 119B?
Mistral Small 4 119B by Mistral AI needs around 96 GB of RAM at the recommended 4-bit quantization (72.1 GB download). Your hardware is checked below β instantly, nothing leaves your browser. Expect roughly ~88 tok/s on a Apple M-series Max.
Reading your hardware signalsβ¦
Real-world notes
Mistral Small 4 119B is the odd one in this family: "small" in the name, but it carries 119B parameters total as a mixture-of-experts that activates only 6.5B per token. That design is why it punches above its active size for speed, but you still pay for the whole model in memory. At 4-bit it lands around 72 GB, and you need roughly 96 GB of RAM to hold it. No consumer GPU fits this one: a 12 GB RTX 3060 and even a 24 GB RTX 4090 are both out. This is a workstation or large unified-memory machine model, not a laptop pick.
In daily use the MoE trick pays off where it matters. On a high-memory Apple M Max it runs near 88 tokens per second, which feels conversational for a model this large, and even on CPU with DDR5 you get around 13 tokens per second if you are patient. The 256K context is generous on paper, but watch the memory: at 128K context the total footprint climbs to about 128.6 GB, so the long window is real only if you have the RAM to back it. Treat the full context as a hardware budget question, not a free setting.
Against its own lineage, Mistral 7B and Nemo 12B are the lightweight chat-only options if you cannot feed 96 GB; this model generally pulls ahead on reasoning, coding, and vision, which those two do not handle at all. Its closest peer here is Nemotron 3 Super 120B-A12B, another large MoE in the same weight class; the two tend to trade blows rather than one clearly leading. The standout is that you get a four-task model (chat, reasoning, coding, vision) under a true Apache 2.0 license, so commercial and production use are fully allowed with no provider strings attached.
Specifications
Size by quantization
| Quantization | Bits/weight | Download | Min RAM | Quality |
|---|---|---|---|---|
| Q2_K | 3.35 | 49.8 GB | 64 GB | Noticeable loss |
| Q4_K_MRecommended | 4.85 | 72.1 GB | 96 GB | Recommended |
| Q5_K_M | 5.65 | 84.0 GB | 128 GB | High |
| Q8_0 | 8.5 | 126.4 GB | 192 GB | Near-original |
| F16 | 16 | 238.0 GB | 256 GB | Original |
Sizes are estimates from parameter count Γ bits per weight; real GGUF builds vary slightly. Β· Data updated: 2026-06-11 Β· How we calculate these numbers β
Memory needed by context length
| Context | KV cache (est.) | Total memory (Q4) |
|---|---|---|
| 4K tokens | ~1.8 GB | ~73.9 GB |
| 8K tokens | ~3.5 GB | ~75.6 GB |
| 32K tokens | ~14.1 GB | ~86.2 GB |
| 128K tokens | ~56.5 GB | ~128.6 GB |
The KV cache grows with context length β a model that fits at 4K can run out of memory at 32K. Estimates assume an FP16 cache with grouped-query attention; actual usage varies by runtime.
Estimated speed by hardware
| Hardware | Bandwidth | ~Speed |
|---|---|---|
| NVIDIA RTX 3060 12GB | 360 GB/s | Won't fit in VRAM |
| NVIDIA RTX 4090 24GB | 1008 GB/s | Won't fit in VRAM |
| Apple M-series (base) | 100 GB/s | ~22 tok/s |
| Apple M-series Pro | 270 GB/s | ~58 tok/s |
| Apple M-series Max | 410 GB/s | ~88 tok/s |
| CPU only (dual-channel DDR5) | 60 GB/s | ~13 tok/s |
Token generation is memory-bandwidth bound: tok/s β bandwidth Γ 0.85 Γ· model size at Q4. Real-world numbers vary by runtime and context length.