Host Llama 3.1 8B Instruct on Vast.ai
Llama 3.1 8B Instruct needs 1x 20GB+ GPU, and Vast.ai's current cheapest qualifying row is RTX 4090 at $0.40/hr.
Vast.ai rows that can host Llama 3.1 8B Instruct
The cheapest tracked way to host Llama 3.1 8B Instruct on Vast.ai is RTX 4090 at $0.40/hr. Vast.ai is currently tied for the cheapest tracked market setup for this model.
| GPU | VRAM | Per GPU | Estimated hourly | Estimated monthly | Updated |
|---|---|---|---|---|---|
| RTX 4090 | 24GB | $0.40/hr | $0.40/hr | $293/mo | Jun 21, 2026 |
| L40 | 48GB | $0.45/hr | $0.45/hr | $331/mo | Jun 21, 2026 |
| RTX 5090 | 32GB | $0.53/hr | $0.53/hr | $390/mo | Jun 21, 2026 |
| RTX 6000Ada | 48GB | $0.60/hr | $0.60/hr | $439/mo | Jun 21, 2026 |
| A100 PCIE | 80GB | $1.00/hr | $1.00/hr | $731/mo | Jun 19, 2026 |
| A100 SXM4 | 80GB | $1.14/hr | $1.14/hr | $834/mo | Jun 21, 2026 |
| H100 PCIE | 80GB | $1.64/hr | $1.64/hr | $1,199/mo | Jun 21, 2026 |
| H100 NVL | 94GB | $2.27/hr | $2.27/hr | $1,656/mo | Jun 21, 2026 |
Why this setup does or does not fit
1x 20GB+ GPU
1x 24GB to 32GB GPU. Long prompts, batching, and KV cache can require extra headroom.
Strong default
A meaningful quality jump over 3B-class models without crossing into premium GPU cost.
Meta 8B
A strong default when you need better quality than 3B without moving to multi-GPU serving.
Llama 3.1 8B Instruct on Vast.ai FAQ
Can I host Llama 3.1 8B Instruct on Vast.ai?
The cheapest tracked way to host Llama 3.1 8B Instruct on Vast.ai is RTX 4090 at $0.40/hr.
What GPU memory does Llama 3.1 8B Instruct need?
Our baseline for Llama 3.1 8B Instruct is 1x 20GB+ GPU. The practical recommendation is 1x 24GB to 32GB GPU.
Is Vast.ai the cheapest provider for Llama 3.1 8B Instruct?
Vast.ai is currently tied for the cheapest tracked market setup for this model.
How fresh is this Vast.ai Llama 3.1 8B Instruct cost page?
This page recalculates from the latest tracked on-demand rows. The freshest qualifying Vast.ai row shown here is from Jun 21, 2026.