Plagly.ai

Plagly.ai is a free AI content detector and plagiarism checker trusted by 50,000+ students, educators, and writers worldwide. Detect AI-generated text from ChatGPT, GPT-5.4, Claude, Gemini, Llama, Grok and 15+ other AI models with 99% accuracy and under 0.4% false-positive rate. Sentence-level highlighting shows exactly which parts were AI-written. Plagiarism scanning runs against billions of web pages, academic papers, and publications. Key features: • Free plan with 5,000 words/month — no credit card required • Sentence-level AI detection + plagiarism in one scan • Agentic Council: 7 specialized AI agents review your document • Paraphrasing tool with 7 rewriting modes • PDF/DOCX/TXT upload up to 10MB • 23 languages (English, Spanish, Portuguese, French, German, Chinese, Japanese, Russian, Italian, Korean, Arabic, Hindi, Turkish, Dutch, Polish, Indonesian, Danish, Swedish, Norwegian, Finnish, Lithuanian, Latvian, Estonian) • Pro plan from $6.99/mo — 200,000 words, bulk processing, API access • Enterprise packages with SSO and white-label Ideal for academic integrity checks, content verification, SEO teams, publishers, and anyone who needs to verify originality or prove content is human-written.