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GLM-5.1-444B

REAP-pruned zai-org/GLM-5.1.

At a glance

Base model zai-org/GLM-5.1
Format BF16
Total params 444B
Active / token 14B
Experts / layer 154
Layers 78
Hidden size 6144
Context 202,752
On-disk size 910 GB

Which variant should I pick?

Variant Format Link
GLM-5.1-444B (this) BF16 link
GLM-5.1-444B-GGUF GGUF link
GLM-5.1-478B-NVFP4 NVFP4 link
GLM-5.1-555B BF16 link
GLM-5.1-555B-GGUF GGUF link
GLM-5.1-555B-NVFP4 NVFP4 link
GLM-5.1-555B-W4A16 W4A16 link

Use the 25% pruned version instead: 0xSero/GLM-5.1-555B

For GGUF: 0xSero/GLM-5.1-555B-GGUF


GLM-5.1 - 40% Expert Pruned (REAP) - BF16

This is a 40% expert-pruned version of zai-org/GLM-5.1 using REAP.

Property Value
Base model zai-org/GLM-5.1
Architecture GlmMoeDsaForCausalLM
Routed experts 256 -> 154 (40% removed)
Active params/token ~14B (top-8 routing)
Precision BF16

Known Issues

This model enters repetition loops on ~29% of test probes when generating long-form code or structured output. Affected tasks include:

  • Complex code generation (red-black trees, B-trees, chess engines, regex engines)
  • Structured output (comparison tables, API specs, enum lists)
  • LaTeX-heavy math

The root cause is that removing 40% of experts exceeds the model's pruning tolerance. The 25% pruned variant (192/256 experts) eliminates all repetition loops.

Sibling Models

Model Prune % Status
0xSero/GLM-5.1-555B 25% Recommended
0xSero/GLM-5.1-555B-GGUF 25% Q4 GGUF Recommended
This repo 40% Has repetition issues
0xSero/GLM-5.1-444B-GGUF 40% Q4 GGUF BROKEN

License & citation

License inherited from the base model.

@misc{lasby2025reap,
  title  = {REAP the Experts: Why Pruning Prevails for One-Shot MoE Compression},
  author = {Mike Lasby and Ivan Lazarevich and Nish Sinnadurai and Sean Lie and Yani Ioannou and Vithursan Thangarasa},
  year   = {2025}, eprint = {2510.13999}, archivePrefix = {arXiv}
}

Sponsors

Made possible by NVIDIA · TNG Technology · Lambda · Prime Intellect · Hot Aisle.

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