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

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