pipeline_tag: image-text-to-text
base_model:

• dealignai/GLM-5.3-Flash-UNCENSORED-FP8
  license: mit
  library_name: Model Optimizer
  tags:
• glm
• glm5
• glm-5.3-flash
• vision
• video
• multimodal
• modelopt
• nvfp4
• w4a16
• quantized
• solstice-ai
• vllm
• sglang
• dflash2
• speculative-decoding
• image-text-to-text
• blackwell
• b200
• rtx4090
• a100
• h100
• uncensored
• abliterated

GLM-5.3-Flash-UNCENSORED (NVFP4 W4A16)

Official Solstice-AI W4A16 NVFP4 Release • Native Multimodal Vision + Video • 1M Context Window (1,048,576 Tokens) • Bundled DFlash 2 Speculative Drafter

Original Architecture by Zhipu AI / ZAI • Uncensored Weights by dealignai • NVFP4 W4A16 Packaging & Curation by Solstice-AI

Model Summary

Solstice-AI/GLM-5.3-Flash-UNCENSORED-NVFP4 is the official W4A16 NVFP4 mixed-precision release of the 320B foundation model, GLM-5.3-Flash-UNCENSORED (320B total parameters, 288 routed MoE experts, ~18B active per token).

Key Architectural Highlights:

• W4A16 Mixed-Precision: Routed MoE experts quantized to NVFP4 (4-bit float, e2m1) while all attention layers, shared experts, and input activations remain strictly in full 16-bit (BF16/FP16). Zero activation clipping degradation!
• Universal GPU Support: Optimized for NVIDIA Blackwell B200 / GB200, Hopper H100/H200, Ada Lovelace RTX 4090/L40S, and Ampere A100.
• Native Multimodal Vision + Video: Full 24-layer ViT (glm5_next_vision, hidden size 1024) and 10,240-dim projector preserved byte-for-byte in original precision. Handles high-resolution images and temporal video sequences.
• Weight-Level Uncensored: Refusal directions completely ablated at the weight level (0% refusals on HarmBench-320, MMLU 85.28% preserved).
• Native 1M Context Window: 1,048,576 tokens native context.
• Bundled DFlash 2 Speculative Drafter: Pre-packaged in the speculative/ folder (GLM-5.3-Flash-DFlash2-bf16.gguf & Q8_0.gguf) for 2x–3x generation throughput.

Official GLM-5.3-Flash Benchmark Scoreboard

Serving Quickstart

1. High-Throughput Serving with vLLM (W4A16 Mode)

vllm serve Solstice-AI/GLM-5.3-Flash-UNCENSORED-NVFP4   --quantization modelopt   --tensor-parallel-size 2   --trust-remote-code   --max-model-len 131072   --gpu-memory-utilization 0.95

2. Speculative Decoding with SGLang + DFlash 2

python3 -m sglang.launch_server   --model-path Solstice-AI/GLM-5.3-Flash-UNCENSORED-NVFP4   --speculative-algorithm DFLASH   --speculative-draft-model-path incoai/GLM-5.3-Flash-DFlash2   --tp 2   --trust-remote-code

Speculative Drafter Files Included

In the speculative/ directory of this repo:

• speculative/GLM-5.3-Flash-DFlash2-bf16.gguf (Pure BF16 block-diffusion draft head)
• speculative/GLM-5.3-Flash-DFlash2-Q8_0.gguf (Q8_0 quantized block-diffusion draft head)

License & Attribution

• Base Architecture: Zhipu AI / ZAI (GLM-5.3 License)
• Uncensored Calibration: dealignai
• Packaging, W4A16 Config & Infrastructure: Solstice-AI