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Open-weight model · Image classification

nsfw_image_detection

by Falcons.ai Falconsai/nsfw_image_detection

The Fine-Tuned Vision Transformer (ViT) is a variant of the transformer encoder architecture, similar to BERT, that has been adapted for image classification tasks.

Parameters86M
Context
Weights1.5 GB
Licenseapache-2.0
AccessOpen weights
Monthly Downloads3.4M

Runs On

What it takes to serve nsfw_image_detection (86M parameters): the memory its weights need at each precision, and the cheapest way to rent enough data-center GPUs to hold them.

PrecisionWeightsMemory neededCheapest setupPer hourAlso fits
16-bit 0.2 GB 0.2 GB 1x MI300X (192 GB)
Vultr
$1.85 1x H100 $1.99 · 1x MI325X $2.00
8-bit 0.1 GB 0.1 GB 1x MI300X (192 GB)
Vultr
$1.85 1x H100 $1.99 · 1x MI325X $2.00
4-bit 0.0 GB 0.1 GB 1x MI300X (192 GB)
Vultr
$1.85 1x H100 $1.99 · 1x MI325X $2.00

Memory is the weights at that precision plus 20% for the runtime and a short context; a long context needs more. Prices are the lowest on-demand hourly rates in the SAVRN Index, read Sep 18, 2026.

SAVRN's Notes on nsfw_image_detection

A moderation gate does not get its own accelerator; it rides along with the pipeline it protects. Falcons.ai fine-tuned the google/vit-base-patch16-224-in21k Vision Transformer, pre-trained on ImageNet-21k, to detect NSFW images at 224 by 224 pixels. With 86M parameters it needs 0.2 GB at 16-bit and 0.1 GB at 8-bit or 4-bit. The table's one MI300X with 192 GB at $1.85 an hour on-demand is there because the table has to name something; in practice it shares whatever accelerator already handles the images.

Under Apache 2.0 you can embed it in a commercial product, modify it and redistribute the result, provided the notices travel with it and you state significant changes. Check the files against the table: the stored precision is float32 and the nine files total 1.46 GB, well above the 0.2 GB row. Released in October 2023, it was last updated in September 2026.

Model Card

By Falcons.ai, published under apache-2.0, revision 96cb0d0342c7.

Model Card: Fine-Tuned Vision Transformer (ViT) for NSFW Image Classification

Model Description

The Fine-Tuned Vision Transformer (ViT) is a variant of the transformer encoder architecture, similar to BERT, that has been adapted for image classification tasks. This specific model, named "google/vit-base-patch16-224-in21k," is pre-trained on a substantial collection of images in a supervised manner, leveraging the ImageNet-21k dataset. The images in the pre-training dataset are resized to a resolution of 224x224 pixels, making it suitable for a wide range of image recognition tasks.

During the training phase, meticulous attention was given to hyperparameter settings to ensure optimal model performance. The model was fine-tuned with a judiciously chosen batch size of 16. This choice not only balanced computational efficiency but also allowed for the model to effectively process and learn from a diverse array of images.

Read the full model card (1,289 words)

Configuration

Architecture
ViTForImageClassification
Layers
12
Hidden size
768
Feed-forward size
3,072
Attention heads
12
Stored precision
float32
Model type
vit

Identity and Version

Repository
Falconsai/nsfw_image_detection
Publisher
Falcons.ai
Task
Image classification
Modality
Image
Library
transformers
Parameters
86M parameters
Languages
vit
Revision
96cb0d0342c7afb80cab76ecc58b265fa44da256
First published
2023-10-13
Last updated
2026-09-07

Files and Weights

9 files, 1.5 GB in total. The weights are 4 files totalling 1.5 GB in bin, pt, safetensors.

Weights4 files · 1.5 GB
Configuration3 files · 1.1 KB
Documentation1 file · 10.6 KB
Repository1 file · 1.5 KB
Every file
FileTypeSizeSHA-256
falconsai_yolov9_nsfw_model_quantized.ptWeights87.1 MB ad6659b81050
model.safetensorsWeights343.2 MB 97b2ce64ec14
optimizer.ptWeights686.5 MB 02ff26c6fe3d
pytorch_model.binWeights343.3 MB 2a6b06faec56
config.jsonConfiguration724 B
labels.jsonConfiguration38 B
preprocessor_config.jsonConfiguration325 B
README.mdDocumentation10.6 KB
.gitattributesRepository1.5 KB

License and Download

License
apache-2.0
Access
Open weights, no gate
Download size
1.5 GB
Download from Falcons.ai

Released by Falcons.ai through its official repository on Hugging Face. Read the license.

Built From

Memory Requirements

PrecisionWeights in memory
As published1.5 GB
16-bit0.2 GB
8-bit0.1 GB
4-bit0.0 GB

Weights only, from the published parameter count; the key-value cache and runtime add to this.

Compare nsfw_image_detection

Questions About nsfw_image_detection

How much GPU memory does nsfw_image_detection need?

About 0.2 GB at 16-bit and 0.1 GB at 4-bit: the weights (86M parameters) plus a working margin. A long context needs more.

What is the cheapest GPU to run nsfw_image_detection on?

At 16-bit, 1x MI300X from $1.85 an hour; at 4-bit, 1x MI300X from $1.85 an hour, at the lowest on-demand prices the SAVRN Index lists.

Can I use nsfw_image_detection commercially?

Yes. nsfw_image_detection is released under Apache License 2.0. The Apache License 2.0 is a permissive open-source license. It permits commercial use, modification and redistribution. It requires keeping the license and copyright notices and any NOTICE file, stating significant changes, and it includes an express patent grant from contributors.

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