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"version": "v5.1",
"description": "AI Content Detection meta-classifier weights (stacking ensemble)",
"modalities": [
"image",
"audio",
"text",
"video"
],
"benchmark": {
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"accuracy": 0.98,
"tpr": 1.0,
"tnr": 0.965,
"f1": 0.978,
"samples": 204
},
"audio": {
"accuracy": 0.852,
"tpr": 0.85,
"tnr": 0.855,
"f1": 0.866,
"samples": 142
},
"text": {
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"tpr": 0.917,
"tnr": 0.947,
"f1": 0.936,
"samples": 129
},
"video": {
"accuracy": 0.9,
"tpr": 0.833,
"tnr": 1.0,
"samples": 30
},
"overall": {
"accuracy": 0.928,
"samples": 475
}
},
"image": {
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"feature_names": [
"NYUAD_ViT",
"ai_vs_real_ViT",
"DFDC_ViT",
"ai_image_det_ViT",
"fft_slope",
"hf_ratio",
"Bombek1_SigLIP2_DINOv2",
"SPAI_CVPR2025"
],
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"lr_intercept": -0.7403570533419102,
"hf_models": [
"Nahrawy/AIorNot",
"haywoodsloan/ai-image-detector-deploy",
"prithivMLmods/Deep-Fake-Detector-Model",
"Organika/sdxl-detector",
"Bombek/BombDetector-v3-SigLIP2-DINOv2-LoRA"
],
"notes": "Bombek1 is #1 feature (coef=+2.50). SPAI uses local repo."
},
"audio": {
"n_features": 9,
"feature_names": [
"DavidCombei_wav2vec2",
"Gustking_wav2vec2",
"mo_thecreator_deepfake",
"spectral_flatness",
"centroid_mean",
"centroid_std",
"zero_crossing_rate",
"spectral_rolloff",
"DF_Arena_1B"
],
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],
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"hf_models": [
"DavidCombei/wav2vec2-xls-r-1b-deepfake",
"Gustking/ai_voice_detect_xlsr",
"mo-thecreator/Deepfake-audio-detection",
"Aloukik21/DF_Arena_1B"
]
},
"text": {
"n_features": 8,
"feature_names": [
"binoculars_score",
"roberta_chatgpt_score",
"perplexity_norm",
"avg_sentence_length",
"lexical_diversity",
"hapax_ratio",
"avg_word_length",
"fakespot_roberta_score"
],
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"hf_models": [
"tiiuae/falcon-7b",
"tiiuae/falcon-7b-instruct",
"roberta-base-openai-detector",
"fakespot-ai/roberta-base-fakespot-detector"
],
"notes": "Binoculars uses falcon-7b pair. fakespot is #1 feature (coef=+1.23)."
},
"video": {
"method": "frame_sampling + audio_extraction",
"frame_detector": "image meta-classifier on sampled frames",
"audio_detector": "audio meta-classifier on extracted audio (ffmpeg)",
"combining": "50/50 equal weight of video_prob and audio_prob",
"default_num_frames": 8,
"notes": "Video = image detection on frames + audio detection on extracted track"
}
} |