Meta
Llama 4 Behemoth (500B)
Meta's highest-capability model for frontier workloads
Model Summary
Family
Llama 4
Version
4.1
Parameters
500B (est.)
Parameter counts for closed models are estimates; vendors rarely publish exact sizes.
VRAM Requirements by Quantization
Memory needed to serve Llama 4 Behemoth (500B) for inference, including a 20% overhead for activations and KV cache.
| Precision | VRAM needed | Smallest single GPU that fits |
|---|---|---|
| INT4 (4-bit) | 279.40 GB | NVIDIA B300 SXM (288 GB) |
| INT8 (8-bit) | 558.79 GB | Multi-GPU required |
| FP16 (16-bit) | 1117.59 GB | Multi-GPU required |
| FP32 (32-bit) | 2235.17 GB | Multi-GPU required |
Recommended GPU Configurations
Cheapest on-demand configurations to serve Llama 4 Behemoth (500B) at 8-bit (559 GB VRAM).
5x AMD Instinct MI250X
640 GB total VRAM · CDNA 2
~$12.50/h
35x NVIDIA T4
560 GB total VRAM · Turing · multi-node
~$17.50/h
3x AMD Instinct MI300X
576 GB total VRAM · CDNA 3
~$18.00/h
Quick GPU Planning
Use the calculator pre-filled with this exact version to estimate memory, speed, and compute requirements in a few clicks.
Access Pre-filled CalculatorFrequently Asked Questions
How much VRAM do you need to run Llama 4 Behemoth (500B)?
With an estimated 500B parameters, Llama 4 Behemoth (500B) needs roughly 559 GB of VRAM in 8-bit (INT8), 279 GB in 4-bit, and 1118 GB in FP16, including a 20% overhead for activations and KV cache.
Which GPUs can run Llama 4 Behemoth (500B)?
At 8-bit quantization, the most cost-effective option is 5x AMD Instinct MI250X (640 GB combined VRAM, around $12.50/hour on-demand). Higher-end cards like the NVIDIA B200 or AMD MI355X reduce the GPU count needed.
Can Llama 4 Behemoth (500B) run on a single GPU?
Only with aggressive quantization: in 4-bit, a single NVIDIA B300 SXM (288 GB) can fit it. At 8-bit or higher, you need a multi-GPU setup.
How much does it cost to serve Llama 4 Behemoth (500B) in the cloud?
Renting 5x Instinct MI250X costs on the order of $12.50/hour, i.e. about $9,125/month running 24/7. Actual prices vary by provider and commitment; spot and reserved capacity can be significantly cheaper.
Deploy on a GPU cloud
Rent 5x Instinct MI250X by the hour instead of buying hardware.
