OPEN MODELS / Language models (LLM)
Run Qwen3-8B-4bit on a cloud GPU
Qwen3-8B-4bit is a Language models (LLM) model by mlx-community. See how much GPU memory it needs, which GPUs it fits on today and what it costs to run it yourself, billed per second.
GPUs it fits on today
Our estimate is about 21 GB for inference with U32 weights, including working memory. Real use depends on resolution, batch size and context length. With 4-bit quantization it needs about 7 GB.
| GPU | Memory | Per hour | 10 hours | |
|---|---|---|---|---|
| RTX 2080 Ti | 22 GB | $0.20 | $2.00 | Rent |
| Tesla P40 | 24 GB | $0.24 | $2.40 | Rent |
| RTX 3090 | 24 GB | $0.39 | $3.90 | Rent |
| Titan RTX | 24 GB | $0.40 | $4.00 | Rent |
| RTX A5000 | 24 GB | $0.42 | $4.20 | Rent |
Live starting prices from our catalog. You pay per second while the machine runs.
How to run Qwen3-8B-4bit
- 01
Rent a GPU
Pick one of the GPUs above. Billing is per second; stop the machine and you stop paying.
- 02
Open a terminal or Jupyter
Connect over SSH or open Jupyter in your browser. PyTorch and CUDA are ready to use.
- 03
Download and run the model
Run the commands below. The weights download straight from Hugging Face to your machine.
pip install -U vllm
vllm serve mlx-community/Qwen3-8B-4bit --host 0.0.0.0 --port 8000Why run it yourself?
Your own LLM server has no per-token bill and no rate limit, and your data stays private. Pick a GPU by memory and serve the model with vLLM.
Questions
- How much GPU memory does Qwen3-8B-4bit need?
- By our estimate about 21 GB for inference (8.2B parameters). Higher resolution, longer context or bigger batches need more.
- How much does it cost to run Qwen3-8B-4bit?
- From $0.20 per hour on RTX 2080 Ti, billed per second. Ten hours cost about $2.00.
- Do I need a subscription?
- No. You pay only for the time your machine runs, from your USD balance. Stop it whenever you are done.
Try it on your own GPU in minutes
Pick a GPU, open Jupyter or SSH and run any open model. You pay per second and can stop anytime; no subscription, no setup fee.
- Per-second billing in USD
- PyTorch and CUDA ready in minutes
- Rent from ChatGPT or Claude too