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Open model · Qwen · Apache 2.0
Run Qwen3.5 397B-A17B
on your own GPUs.
Largest Apache-licensed Qwen model, vision-language. 397B MoE · 17B active parameters, 807 GB of official BF16 weights.
- 968 GBGPU memory, BF16
- 484 GBGPU memory, FP8
- 8× RTX PRO 6000cheapest server, FP8
- $7,672per month
How much VRAM Qwen3.5 397B-A17B needs.
Weights × 1.2 for the KV cache and activations, with 92% of GPU memory usable: the rule our deploy page uses. Long contexts and many parallel requests need more.
| Serving option | GPU memory | Cheapest server | Per month | Action |
|---|---|---|---|---|
| vLLM or SGLang, official BF16 weights | 968 GB | 4× NVIDIA B300 | $16,076/mo | Deploy |
| vLLM or SGLang, FP8 | 484 GB | 8× NVIDIA RTX PRO 6000 | $7,672/mo | Deploy |
Weights: Qwen/Qwen3.5-397B-A17B · 807 GB, BF16. How we estimate GPU memory
Which GPUs run Qwen3.5 397B-A17B.
Smallest server of each GPU that holds the model, and its monthly price.
| GPU | BF16 | FP8 | Price, BF16 |
|---|---|---|---|
| NVIDIA B300288 GB HBM3e | 4× | 2× | $16,076/mo |
| NVIDIA B200180 GB HBM3e | 8× | 4× | $27,512/mo |
| AMD MI355X288 GB HBM3E | n/a | n/a | — |
| NVIDIA H200141 GB HBM3e | 8× | 4× | $18,232/mo |
| NVIDIA H10080 GB HBM3 | — | 8× | — |
| NVIDIA RTX PRO 600096 GB GDDR7 ECC | — | 8× | — |
| NVIDIA L40S48 GB GDDR6 ECC | — | — | — |
| NVIDIA RTX 509032 GB GDDR7 | — | — | — |
| NVIDIA RTX 409024 GB GDDR6X | — | — | — |
| NVIDIA RTX 508016 GB GDDR7 | — | — | — |
n/a = ROCm support for this model is not confirmed with vLLM or SGLang. — = larger than the biggest server of that GPU. Size another model
Deploy Qwen3.5 397B-A17B preinstalled.
Pick the model at the Software step of the deploy page: we install it with the engine you choose, at no extra cost.
- 1
Pick the server
The deploy page proposes the cheapest server that holds the model, and switches when you change the precision or the engine.
- 2
Pick the engine
vLLM or SGLang serve an OpenAI-compatible API.
- 3
Pay and log in
Pay the month in BTC, ETH, USDT, XMR or LTC, no KYC. Your server is online in under 10 minutes after confirmation, with root SSH access.
Guides: serving LLMs with vLLM · GPU servers for LLM inference · first steps on your server
Qwen3.5 397B-A17B FAQ.
Every model: open models and their VRAM.
How much VRAM does Qwen3.5 397B-A17B need?
About 968 GB of GPU memory to serve the official BF16 weights (807 GB) with vLLM or SGLang, by our rule of weights × 1.2 for the KV cache and activations; about 484 GB in FP8. Long contexts and many parallel requests need more.
Can Qwen3.5 397B-A17B run on a single GPU?
No. The smallest server that holds it is 8× RTX PRO 6000, with vLLM or SGLang, FP8, by our sizing rule.
What is the cheapest server for Qwen3.5 397B-A17B?
The cheapest CryptGPU server for Qwen3.5 397B-A17B is 8× NVIDIA RTX PRO 6000 at $7,672 a month, with vLLM or SGLang, FP8. The model can be preinstalled at no extra cost when you order, and you pay in crypto with no KYC.
Does Qwen3.5 397B-A17B run on the AMD MI355X?
Its support on ROCm is not confirmed yet, so we offer it on NVIDIA servers.
What licence does Qwen3.5 397B-A17B use?
Apache 2.0. We download the official weights from Hugging Face (Qwen/Qwen3.5-397B-A17B); you are responsible for the licence.
Your own Qwen3.5 397B-A17B, ready in minutes.
Dedicated GPUs, one monthly price, the model preinstalled. Paid in crypto, no KYC.