GLM-5.3-Flash-FP4-Local, laid out for inferredThoughts
NVIDIA's GLM-5.3-Flash-FP4-Local, with each MoE layer's routed experts stacked into one block per projection, so the inferredThoughts engine can keep the experts a conversation uses on the GPU, the next ones in RAM and the rest on an NVMe SSD.
The weights are NVIDIA's, unchanged. This is a re-layout, not a new quantization: the same numbers in a different order. Every tensor that is not a routed expert is copied byte for byte under its own name.
Precision (NVIDIA's, kept as it is)
| part | stored as (from hf_quant_config.json) |
|---|---|
| routed experts, 42 MoE layers | NVFP4: E2M1 values, E4M3 scales per 16 weights, FP32 global scale |
| the MTP layer's routed experts | NVFP4, weights only (BF16 activations) |
| shared experts; the sparse-attention layers' projections | FP8 E4M3, block-scaled, weights only |
the linear-attention layers' projections, the three dense MLPs, lm_head |
MXFP8: E4M3 values, UE8M0 scales per 32 weights |
| embeddings, norms, routers | BF16 |
| vision tower | NVFP4 (weights only) MLPs and merger, MXFP8 attention, the rest BF16 |
321.3B parameters by our count of the tensors (NVIDIA's card: 320B in total, 18B active).
Can I load it?
Only with inferredThoughts. The stacked layout is the engine's own; vLLM, SGLang and transformers read NVIDIA's original instead, so use that one with them. GLM-5.3-Flash support in inferredThoughts is not in a public release yet; this card will say which release runs it.
Files
| file | what |
|---|---|
experts-003.safetensors ... experts-045.safetensors |
the routed experts, one MoE layer a file |
dense-00001.safetensors ... dense-00003.safetensors |
everything else, byte for byte from the source |
model.safetensors.index.json |
the tensor map |
config.json, generation_config.json, hf_quant_config.json, processor_config.json, tokenizer.json, tokenizer_config.json, chat_template.jinja |
from the source, unchanged |
NVIDIA-MODEL-CARD.md |
NVIDIA's model card for the source checkpoint, unchanged |
NOTICE, LICENSE-NVIDIA-Open-Model-Agreement.pdf, LICENSE-MIT-GLM |
the licences and notices |
SHA256SUMS |
SHA-256 of every file |
Check a download with sha256sum --ignore-missing -c SHA256SUMS.
License
Use of this model is governed by the NVIDIA Open Model Agreement
(LICENSE-NVIDIA-Open-Model-Agreement.pdf). The GLM-5.3-Flash base model is governed by the MIT License
(LICENSE-MIT-GLM). See NOTICE.
This is an independent re-layout. It is not made, reviewed or endorsed by NVIDIA or by Z.ai.
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