---
license: mit
tags:
- ai-generated-image-detection
- deepfake-detection
- stable-diffusion
- genimage
- image-classification
library_name: pytorch
---

# GUARD-AI Checkpoints

Checkpoints used in the **GUARD-AI** benchmark.

## Checkpoint format

```python
import torch
ckpt = torch.load("wang2020/genimage_sd14_best.pth", map_location="cpu")
state_dict = ckpt["model"]      # detector backbone weights
threshold  = ckpt["threshold"]  # Youden-J calibrated decision threshold (retrained ckpts only)
```

All detectors output a single fake-logit; `sigmoid(logit) >= threshold` ⇒ "AI-generated".
Architecture definitions live in each detector's original repository; the GUARD
codebase vendors and wires them for evaluation.