Leanstral 119B A6B needs ~97.9 GB VRAM. NVIDIA H200 PCIe 141GB has 141.0 GB. With Q4_K_M quantization, expect ~123 tok/s.
Operating mode
Interactive favors responsiveness, while light API and scale-out lean harder on serving readiness. The fit stays the same, but the recommendation lens changes.
Current mode
Balanced
Balanced for general local use. Keeps the ranking neutral across personal and serving workflows.
Select quantization to explore
Fit status
Runs well
Decode
88.4 tok/s
TTFT
2189 ms
Safe context
94K
Memory
97.9 GB / 141.0 GB
This setup is broadly balanced for this model.
No major red flags
This recommendation has enough memory headroom and acceptable estimated speed for the selected workload.
| Workload | Grade | Fit | Decode | TTFT | Context |
|---|---|---|---|---|---|
| Chat | S | Runs well | 88.4 tok/s | 1194 ms | 94K |
| Coding | S | Runs well | 122.8 tok/s | 1576 ms | 94K |
| Agentic Coding | S | Runs well | 88.4 tok/s | 3184 ms | 94K |
| Reasoning | S | Runs well | 88.4 tok/s | 2587 ms | 94K |
| RAG | S | Runs well | 88.4 tok/s | 3980 ms | 94K |
Inference speed
Estimated decode speed (tokens/sec) for Leanstral 119B A6B at Q4_K_M across popular GPUs and Apple Silicon, including multi-GPU rigs, using the fastest local runtime per device. Fastest is Mac Studio M3 Ultra 256GB at ~17 tok/s. Speed is memory-bandwidth bound, so cards that fit the whole model in VRAM run far faster than ones that offload to system RAM.
| GPU / Mac | Memory | Quant | Speed (tok/s) | Fits? |
|---|---|---|---|---|
Mac Studio M3 Ultra 256GB | 256 GB | Q4_K_M | 17.0 | Fits |
How Leanstral 119B A6B (119B params) fits at each quantization level on NVIDIA H200 PCIe 141GB (141.0 GB usable).
| Quant | Bits | VRAM | Quality | Fit |
|---|---|---|---|---|
Q2_K | 2 | 46.4 GB | Low | A79 |
Q3_K_S | 3 | 58.3 GB | Low | A81 |
NVFP4 | 4 |
Copy-paste commands to run Leanstral 119B A6B on your machine.
Run
docker run --rm -it ghcr.io/ggerganov/llama.cpp:full \
--hf-repo "mistralai/Leanstral-2603" \
--hf-file "Leanstral-2603-Q4_K_M.gguf" \
-c 4096 -ngl 99Your hardware
| Model | Params | Grade | Decode | Capabilities |
|---|---|---|---|---|
| 123B | S | 46.8 tok/s | ||
| 122B | S |
Yes, NVIDIA H200 PCIe 141GB can run Leanstral 119B A6B with a S grade (Runs well). Expected decode speed: 122.8 tok/s.
Leanstral 119B A6B (119B parameters) requires approximately 97.9 GB of memory with Q4_K_M quantization.
The recommended quantization for Leanstral 119B A6B is Q4_K_M, which balances quality and memory efficiency.
On NVIDIA H200 PCIe 141GB, Leanstral 119B A6B achieves approximately 122.8 tokens per second decode speed with a time-to-first-token of 1576ms using Q4_K_M quantization.
For coding workloads, Leanstral 119B A6B on NVIDIA H200 PCIe 141GB receives a S grade with 122.8 tok/s and 94K context.
On NVIDIA H200 PCIe 141GB, Leanstral 119B A6B can safely use up to 94K tokens of context. The model's official context limit is 256K, but available memory constrains the safe maximum.
Paste this snippet into any page to show a live fit card.
<iframe src="https://willitrunai.com/embed/leanstral-119b-a6b-on-h200-pcie-141gb" width="400" height="180" frameborder="0" style="border:none;border-radius:12px;overflow:hidden;" title="Will It Run AI — fit result"></iframe>
Preview:
| 128 GB |
| Q4_K_M |
| 11.9 |
| Too big |
Mac Studio M1 Ultra 128GB | 128 GB | Q4_K_M | 11.3 | Too big |
MacBook Pro M4 Max 128GB | 128 GB | Q4_K_M | 8.8 | Too big |
2× RX 7900 XTX 24GB | 48 GB | Q4_K_M | 7.4 | Too big |
| 48 GB | Q4_K_M | 6.7 | Too big |
| 48 GB | Q4_K_M | 5.8 | Too big |
| 32 GB | Q4_K_M | 5.5 | Too big |
| 48 GB | Q4_K_M | 5.1 | Too big |
MacBook Pro M4 Max 64GB | 64 GB | Q4_K_M | 3.7 | Too big |
| 24 GB | Q4_K_M | 3.5 | Too big |
RX 7900 XTX 24GB | 24 GB | Q4_K_M | 3.2 | Too big |
| 24 GB | Q4_K_M | 3.0 | Too big |
| 16 GB | Q4_K_M | 2.8 | Too big |
MacBook Pro M3 Max 64GB | 64 GB | Q4_K_M | 2.6 | Too big |
MacBook Pro M1 Max 64GB | 64 GB | Q4_K_M | 2.4 | Too big |
| 12 GB | Q4_K_M | 2.0 | Too big |
| 12 GB | Q4_K_M | 2.0 | Too big |
| 8 GB | Q4_K_M | 2.0 | Too big |
MacBook Pro M4 Pro 48GB | 48 GB | Q4_K_M | 2.0 | Too big |
Estimates for single-stream decoding at Q4_K_M; real tokens/sec varies with prompt length, context, batch size, and runtime build. Prompt processing (prefill) is faster than the decode figures shown here.
66.6 GB |
| Medium |
| A82 |
Q4_K_M | 4 | 72.6 GB | Medium | A83 |
Q5_K_M | 5 | 85.7 GB | High | A84 |
Q6_KBest for your GPU | 6 | 97.6 GB | High | A84 |
Q8_0 | 8 | 127.3 GB | Very High | F0 |
F16 | 16 | 244.0 GB | Maximum | F0 |
| 88.7 tok/s |
| 124B | S | 46.4 tok/s |