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 $0.47/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 $0.47/hr. The overall tracked market floor is $0.39/hr on RunPod, so Vast.ai is $0.08/hr above the current floor.
| GPU | VRAM | Per GPU | Estimated hourly | Estimated monthly | Offers | Updated |
|---|---|---|---|---|---|---|
| RTX 4090 | 24GB | $0.47/hr | $0.47/hr | $342/mo | 7 |
Jul 10, 2026
Vast.ai marketplace offers
7 offers · Jul 10, 2026
global aggregate
|
| RTX 5090 | 32GB | $0.55/hr | $0.55/hr | $402/mo | 6 |
Jul 10, 2026
Vast.ai marketplace offers
6 offers · Jul 10, 2026
global aggregate
|
| L40 | 48GB | $0.58/hr | $0.58/hr | $421/mo | 2 |
Jul 5, 2026
Vast.ai marketplace offers
2 offers · Jul 5, 2026
global aggregate
|
| RTX 6000Ada | 48GB | $0.68/hr | $0.68/hr | $498/mo | 2 |
Jul 10, 2026
Vast.ai marketplace offers
2 offers · Jul 10, 2026
global aggregate
|
| A100 SXM4 | 80GB | $1.05/hr | $1.05/hr | $763/mo | 1 |
Jul 7, 2026
Vast.ai marketplace offers
1 offer · Jul 7, 2026
global aggregate
|
| A100 PCIE | 80GB | $1.27/hr | $1.27/hr | $926/mo | 1 |
Jul 10, 2026
Vast.ai marketplace offers
1 offer · Jul 10, 2026
global aggregate
|
| H100 PCIE | 80GB | $2.13/hr | $2.13/hr | $1,557/mo | 1 |
Jul 5, 2026
Vast.ai marketplace offers
1 offer · Jul 5, 2026
global aggregate
|
| H100 SXM | 80GB | $2.24/hr | $2.24/hr | $1,632/mo | 2 |
Jul 10, 2026
Vast.ai marketplace offers
2 offers · Jul 10, 2026
global aggregate
|
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 $0.47/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?
The overall tracked market floor is $0.39/hr on RunPod, so Vast.ai is $0.08/hr above the current floor.
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 Jul 10, 2026.