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Pangram Labs announces Pangram 4, its most powerful AI detector yet, with significantly reduced false positive and false negative rates, robust detection across frontier models, and new image scan features.
This paper investigates the high false positive rate of existing AI-text detectors when applied to patent claims, which are legally required to be clear and concise like LLM output, and proposes a logistic regression classifier based on linguistic complexity features that outperforms perplexity-based detectors on consumer hardware.