Question 1

How much VRAM does GLM-5.3-Flash need?

Accepted Answer

GLM-5.3-Flash (321.3B) requires approximately 718.212942905724 GB of VRAM at full precision (FP16), 359.1 GB at 8-bit quantization (Q8), and 179.6 GB at 4-bit quantization (Q4). The actual VRAM usage may be slightly higher due to KV cache and runtime overhead.

Question 2

What GPUs can run GLM-5.3-Flash?

Accepted Answer

We currently have no compatible GPUs indexed for GLM-5.3-Flash. This may be because the model's VRAM requirements exceed available GPUs in our database, or VRAM data hasn't been computed yet.

Question 3

What is the cheapest GPU to run GLM-5.3-Flash?

Accepted Answer

We don't currently have cloud pricing data for GPUs compatible with GLM-5.3-Flash. Cloud pricing data is updated regularly — check back soon.

Question 4

Can GLM-5.3-Flash run on consumer hardware?

Accepted Answer

GLM-5.3-Flash requires approximately 718.212942905724 GB of VRAM at FP16, and even with 4-bit quantization (Q4) it needs about 179.6 GB. This exceeds the 24 GB available on the highest-end consumer GPU (RTX 4090), so GLM-5.3-Flash requires datacenter or cloud GPUs.

Question 5

What quantization options are available for GLM-5.3-Flash?

Accepted Answer

GLM-5.3-Flash supports the following quantization levels: FP16 (full precision): ~718.212942905724 GB, Q8 (8-bit): ~359.1 GB, Q6 (6-bit): ~269.3 GB, Q4 (4-bit): ~179.6 GB. Lower quantization reduces VRAM usage at the cost of some quality loss. Q8 offers a good balance between quality and memory savings, while Q4 provides maximum compression.

GLM-5.3-Flash

VRAM Requirements

Compatible GPUs

GLM-5.3-Flash FAQ

VRAM requirements for GLM-5.3-Flash at different quantization levels
Quantization	VRAM Required
FP16	718.2 GB
Q8	359.1 GB
Q6	269.3 GB
Q4	179.6 GB