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ZeroGPT
FreemiumFree AI content detector that flags ChatGPT, GPT-4, and Gemini text with a percentage score and sentence highlighting.
7 Alternatives to ZeroGPT
🔍 AI DetectionCopyleaks
FreemiumContent authenticity platform pairing AI-writing detection with plagiarism checking across 60+ billion pages, built for institutions.
GPTZero
FreemiumAI-writing detector built by Edward Tian that flags text from ChatGPT, Claude, and Gemini using perplexity and burstiness.
Hive Moderation
FreemiumContent moderation and AI-detection APIs — flag NSFW, violence, hate, and AI-generated media at platform scale.
Originality.ai
PaidAI content and plagiarism detector built for content publishers — scans for GPT, Claude, and Gemini text plus plagiarism in one pass.
Sapling AI Detector
FreemiumAI content detector paired with real-time grammar and writing suggestions, plus an API for teams.
Turnitin AI Detection
PaidThe academic integrity standard — detects AI-generated writing and plagiarism in student submissions.
Winston AI
FreemiumAI content detector built for publishers and educators — 99.98% accuracy detecting ChatGPT and Claude.