MODEL PROFILE

GLM-5.3-Flash-NVFP4

LibertAIDAI · GLM-5.3-Flash-NVFP4

*Weight-only NVFP4 quantization of Z.ai's GLM-5.3-Flash — the first GLM to combine **sparse and linear attention**.* A **weight-only NVFP4 (NVFP4-A16)** checkpoint. The **routed-expert FFN** tensors — 97% of the model's parameters — are quantized to **NVFP4** (E2M1, with FP8-E4M3 per-16-block scales and an FP32 per-tensor global scale). Everything outlier-sensitive stays in **BF16**: > both attention flavours (all 34 KDA linear-attention layers *and* the 11 DeepSeek-sparse layers, including the sparse indexer) · the **entire vision tower** · shared experts · MoE routers · dense-MLP layers · the MTP head · the Manifold-Constrained Hyper-Connection (mHC) tensors · token embeddings · `lm_head` · all norms

Visual QAmultimodallicense:mit
Context windowNot disclosed
Input → OutputText、Image → Text
Model weightsNot verified
Profile updated2026/10/31 10:09:09
OVERVIEW

Model overview

*Weight-only NVFP4 quantization of Z.ai's GLM-5.3-Flash — the first GLM to combine **sparse and linear attention**.* A **weight-only NVFP4 (NVFP4-A16)** checkpoint. The **routed-expert FFN** tensors — 97% of the model's parameters — are quantized to **NVFP4** (E2M1, with FP8-E4M3 per-16-block scales and an FP32 per-tensor global scale). Everything outlier-sensitive stays in **BF16**: > both attention flavours (all 34 KDA linear-attention layers *and* the 11 DeepSeek-sparse layers, including the sparse indexer) · the **entire vision tower** · shared experts · MoE routers · dense-MLP layers · the MTP head · the Manifold-Constrained Hyper-Connection (mHC) tensors · token embeddings · `lm_head` · all norms

Key features

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Limitations & considerations

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PRICING & COST

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INDEPENDENT BENCHMARKS

Public benchmarks & run configuration

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Sources & traceability

许可证:mit。模型介绍与第三方评测均以原来源的具体版本和方法为准。