---
license: apache-2.0
language:
- en
base_model:
- black-forest-labs/FLUX.2-klein-4B
tags:
- art
---
# Just some testing

Pin down what is needed between 50s,40s,30s cards

Translate info for use in TensorRT fp4 converting / onnx 

Anyone that has made fp4 onnx before with NVIDIA’s Model Optimizer PTQ help in the Community tab is welcomed.

Currently working on correct Quantize/Dequantize nodes for onnx export to build fp4 RT engine for 50s cards. 


## Klein 4B NVFP4 Variants — `txt_attn` dtype notes

### Klein4b-nvfp4.safetensors
- `txt_attn` weights: **NVFP4**

### Klein4b-nvfp4_BF16.safetensors
- `txt_attn` weights: **BF16**

### Klein4b-nvfp4_fp8e4m3fn_absmax.safetensors
- `txt_attn` weights: **FP8 (float8_e4m3fn)**
- `txt_attn` scaling: **absmax**

### Klein4b-nvfp4_fp8e5m2_absmax.safetensors
- `txt_attn` weights: **FP8 (float8_e5m2)**
- `txt_attn` scaling: **absmax**