What are the hardware requirements for GLM 5.3 Flash?

GLM 5.3 Flash requires approximately 242.5 GB of VRAM. Quantized variants may run on less VRAM; see the Quantized Models section on this page.

Who developed GLM 5.3 Flash and how large is it?

GLM 5.3 Flash is developed by unsloth, a model with 321.3b parameters. The model is published as open weights on Hugging Face and indexed on LLM Explorer with full benchmark history.

Where can I download or evaluate GLM 5.3 Flash?

GLM 5.3 Flash is hosted on Hugging Face and linked from this page. LLM Explorer also lists quantized variants and similar alternatives if available.

GLM 5.3 Flash by unsloth — VRAM 242.5GB

Name: GLM 5.3 Flash
Author: unsloth

GLM 5.3 Flash is an open-source language model by unsloth. Features: 321.3b LLM, VRAM: 242.5GB, License: mit, LLM Explorer Score: 0.33.

Arxiv:2602.15763 Base model:finetune:zai-org/gl... Base model:zai-org/glm-5.3-fla... Conversational En Endpoints compatible Glm5 next Image-text-to-text Region:us Safetensors Sharded Tensorflow Zh

Model Card on HF 🤗: https://huggingface.co/unsloth/GLM-5.3-Flash

GLM 5.3 Flash Parameters and Internals

LLM Name	GLM 5.3 Flash
Repository 🤗	https://huggingface.co/unsloth/GLM-5.3-Flash
Base Model(s)	zai-org/GLM-5.3-Flash-BF16 zai-org/GLM-5.3-Flash-BF16
Model Size	321.3b
Required VRAM	242.5 GB
Updated	2026-08-30
Maintainer	unsloth
Model Type	glm5_next
Model Files	5.4 GB: 1-of-120 5.4 GB: 2-of-120 5.4 GB: 3-of-120 5.4 GB: 4-of-120 5.4 GB: 5-of-120 5.4 GB: 6-of-120 5.3 GB: 7-of-120 5.4 GB: 8-of-120 5.4 GB: 9-of-120 5.4 GB: 10-of-120 5.4 GB: 11-of-120 5.4 GB: 12-of-120 5.4 GB: 13-of-120 5.4 GB: 14-of-120 5.4 GB: 15-of-120 5.4 GB: 16-of-120 5.4 GB: 17-of-120 5.3 GB: 18-of-120 5.4 GB: 19-of-120 5.3 GB: 20-of-120 5.3 GB: 21-of-120 5.4 GB: 22-of-120 5.4 GB: 23-of-120 5.4 GB: 24-of-120 5.4 GB: 25-of-120 5.4 GB: 26-of-120 5.4 GB: 27-of-120 5.4 GB: 28-of-120 5.4 GB: 29-of-120 5.4 GB: 30-of-120 5.4 GB: 31-of-120 5.4 GB: 32-of-120 5.4 GB: 33-of-120 5.4 GB: 34-of-120 5.4 GB: 35-of-120 5.4 GB: 36-of-120 5.4 GB: 37-of-120 5.4 GB: 38-of-120 5.4 GB: 39-of-120 5.3 GB: 40-of-120 5.4 GB: 41-of-120 5.4 GB: 42-of-120 5.4 GB: 43-of-120 5.4 GB: 44-of-120 5.4 GB: 45-of-120
Supported Languages	en zh
Model Architecture	Glm5NextForConditionalGeneration
License	mit
Transformers Version	5.16.0

Rank the GLM 5.3 Flash capabilities

Have you tried this model? Rate its performance — this feedback helps the ML community find the right model for their needs.

Instruction Following and Task Automation
Factuality and Completeness of Knowledge
Censorship and Alignment
Data Analysis and Insight Generation
Text Generation
Text Summarization and Feature Extraction
Code Generation
Multi-Language Support and Translation

Best Alternatives to GLM 5.3 Flash

Best Alternatives	Context / RAM	Downloads	Likes
GLM 5.3 Flash	0K / 237.5 GB	34	1289
GLM 5.3 Flash BF16	0K / 237.1 GB	24	38
GLM 5.3 Flash FP8	0K / 237.5 GB	5048	22
... 5.3 Flash CYBERSECURITY W4A16	0K / 71.6 GB	4022	8
GLM 5.3 Flash Nota NVFP4	0K / 21 GB	160	17
Cyberneurova GLM 5.3 Flash FP8	0K / 242.9 GB	183	2
GLM 5.3 Flash DERISKED BF16	0K / 237.1 GB	226	3
...Flash MXFP4 Mixed CT AutoRound	0K / 67.4 GB	195	1
GLM 5.3 Flash NVFP4	0K / 69.8 GB	143	0
...Flash Abliterated Experimental	0K / 471.3 GB	69	3

Note: green Score (e.g. "73.2") means that the model is better than unsloth/GLM-5.3-Flash.