OPEN MODELS / Vision language models
Run Step-3.7-Flash on a cloud GPU
Step-3.7-Flash is a Vision language models model by stepfun-ai. 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 485 GB for inference with BF16 weights, including working memory. Real use depends on resolution, batch size and context length. With 4-bit quantization it needs about 146 GB.
| GPU | Memory | Per hour | 10 hours | |
|---|---|---|---|---|
| 16× RTX 5090 | 512 GB | $14.40 | $144.00 | Rent |
| 8× RTX PRO 6000 WS | 768 GB | $18.56 | $185.60 | Rent |
| 8× RTX PRO 6000 S | 768 GB | $19.44 | $194.40 | Rent |
| 8× A100 | 640 GB | $20.72 | $207.20 | Rent |
| 4× H200 | 560 GB | $23.04 | $230.40 | Rent |
Live starting prices from our catalog. You pay per second while the machine runs.
How to run Step-3.7-Flash
- 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 stepfun-ai/Step-3.7-Flash --host 0.0.0.0 --port 8000Why run it yourself?
Run document and image understanding on your own GPU: no per-image fee, and files stay on your machine.
Questions
- How much GPU memory does Step-3.7-Flash need?
- By our estimate about 485 GB for inference (201B parameters). Higher resolution, longer context or bigger batches need more.
- How much does it cost to run Step-3.7-Flash?
- From $14.40 per hour on 16× RTX 5090, billed per second. Ten hours cost about $144.00.
- 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