{"repo":"stef41/lmscan","free":true,"listed":false,"github":"https://github.com/stef41/lmscan","clone":"git clone https://github.com/stef41/lmscan.git","description":"🔍 Detect AI-generated text and fingerprint which LLM wrote it. Open-source GPTZero alternative. Zero dependencies, works offline.","language":"Python","stars":26,"topics":["ai-detection","ai-text-detection","chatgpt","claude","gptzero","llm","nlp","plagiarism","python","text-forensics"],"license":null,"category":"ai-agents","readme_excerpt":"🔍 lmscan Detect AI-generated text. Fingerprint which LLM wrote it. Open-source GPTZero alternative. GPTZero charges $15/month. Originality.ai charges per scan. Turnitin locks you into institutional contracts. lmscan is free, open-source, works offline, and tells you which model wrote the text. Install Zero dependencies. Works with Python 3.9+. No API keys. No internet. No GPU. Usage Python API Scan entire directories How It Works lmscan uses 12 statistical features derived from computational linguistics research to distinguish AI-generated text from human writing: Feature What it measures AI signal --------- ----------------- ----------- Burstiness Variance in sentence complexity AI text is unusually uniform Sentence length variance How much sentence lengths vary AI produces uniform lengths Vocabulary richness Type-token ratio (Yule's K corrected) AI reuses words more Hapax legomena ratio Fraction of words appearing once AI has fewer unique words Zipf deviation How word frequencies follow Zipf's law AI deviates from natural distribution Readability consistency Flesch-Kincaid variance across paragraphs AI maintains constant readability Bigram/trigram repetition Repeated word pairs and triples AI repeats phrase structures Transition word ratio \"however\", \"moreover\", \"furthermore\"... AI overuses transitions Slop word density Known AI vocabulary markers \"delve\", \"tapestry\", \"beacon\"... Punctuation entropy Diversity of punctuation usage AI is more predictable Each feature produce","default_branch":null,"files":null,"tree":[],"storefront":"/r/stef41","claimed":false,"request_supported":{"post":"https://gitbuyer.com/r/stef41/lmscan/request-supported","requests":0},"note":"indexed from public GitHub; nothing is for sale on this page. Clone it from GitHub. Paid listings live at /search."}