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Prompt injection detector beats ProtectAI by 19% accuracy, 8.9x smaller

Show HN: Prompt injection detector beats ProtectAI by 19% accuracy, 8.9x smaller

58 AI Score
Show_hn other Added Apr 8, 2026

Details

Sector
other
Total Funding
$0
Last Round
$0

About

ProtectAI&#x27;s deberta-v3 is the most downloaded prompt injection classifier on HuggingFace. We benchmarked directly against it on Qualifire&#x27;s independent dataset (excluded from our training).<p>* 91.68% vs 72.28% accuracy<p>* 95.84% vs 65.33% precision — they block 1 in 3 legitimate users<p>* 83MB vs 739MB ONNX size<p>* 101ms vs 646ms on CPU

AI Score Reasoning

The startup shows significant technical promise by outperforming the industry standard in AI security benchmarks, offering a faster and more accurate solution for a critical enterprise pain point. However, the lack of funding, team information, and commercial traction makes this a high-risk, early-stage technical project rather than a proven business.

Source

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