GLM-5.3 Flash

Zhipu — 321B params — hosted API model. Dataset updated 2026-09-03.

PARAMETERS
321B
FORMAT
API
RUNS LOCALLY
No
BEST FOR
Chat, Coding

You don't run GLM-5.3 Flash locally

At 321B parameters, a Q4-class build of GLM-5.3 Flash would need roughly 193 GB — a 256GB Mac Studio could hold the weights in principle, but no registry-verified local build exists today (0.6 GB per billion parameters, our standard Q4 rule). Access is through the hosted API.

Z.ai fast tier (Aug 25, 2026), 321B total MoE, MIT weights on Hugging Face. Cheap hosted workhorse; too large for consumer local hardware even at aggressive quants.

Strong local alternatives

Qwen3 235B A22B
235B — runs on one machine
Qwen3.5 122B-A10B Instruct
122B — runs on one machine
DeepSeek-R1 671B
671B — runs on one machine

More Zhipu models

GLM-4 PlusGLM-5GLM-5.1GLM-5.2GLM-5.3

Frequently asked questions

Can I run GLM-5.3 Flash locally?

Not realistically. GLM-5.3 Flash is a 321B-parameter model; a Q4-class build would need roughly 193 GB — a 256GB Mac Studio could hold the weights in principle, but no registry-verified local build exists today. The hosted API or a smaller open model is the practical path.

How do I access GLM-5.3 Flash?

Through the vendor-hosted API. See the official source linked on this page.

What is the best local alternative to GLM-5.3 Flash?

Qwen3 235B A22B is the strongest local model we track (235B). It runs on a single high-memory Mac or GPU; see its page for exact hardware.

Cite this page

ModelFit: GLM-5.3 Flash — specs, memory math and hardware verdicts.
https://modelfit.io/models/glm-5.3-flash/ (dataset updated 2026-09-03, CC BY 4.0).