📝 Text & File Analysis
Free · up to 1,000 words
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"While AI is a powerful tool that enhances human capability, its rapid adoption creates an even greater need for authenticity to sustain trust."
Why detecting AI matters — for education, journalism and trust
Our Science
How VeriAI detects AI content
VeriAI uses a multi-signal detection approach powered by Gemini AI — analyzing the same linguistic patterns that distinguish AI writing from human writing, across text, web pages and videos.
Perplexity Analysis
AI models always pick the statistically most likely next word. This makes AI text highly predictable. VeriAI measures how "surprising" each word choice is — low perplexity means AI, high perplexity means human. This is the same core signal used by GPTZero and Originality.ai.
Burstiness Score
Humans write in bursts — mixing short punchy sentences with long complex ones. AI writes uniformly — every sentence tends to be similar in length and complexity. VeriAI measures this variation (burstiness). Low burstiness is a strong AI signal.
AI Vocabulary Fingerprint
AI models overuse specific words — "furthermore", "leverage", "delve", "multifaceted", "paramount", "transformative", "comprehensive", "it is important to note". VeriAI has a trained dictionary of 200+ AI-typical phrases and scores their frequency in the text.
Structural Pattern Detection
AI writes in perfect paragraph blocks — always 3-5 sentences, always balanced, never tangents, never repetition. Humans ramble, repeat themselves differently, go off-topic, and have uneven structure. VeriAI detects this structural uniformity as an AI signal.
Human Authenticity Markers
Real human writing contains typos, self-corrections, colloquialisms, hedging language ("I think", "maybe"), personal anecdotes, and specific details only a human would know. VeriAI actively looks for these markers and treats their presence as a strong human signal.
Sentence-Level Classification
VeriAI doesn't just give a single score for the whole document — it classifies each sentence individually and highlights the specific sentences most likely written by AI. This lets you see exactly which parts of a document are suspicious.
How each product uses these signals
Text Checker
Most accurate
All 5 signals run simultaneously — perplexity, burstiness, vocabulary fingerprint, structural patterns and human markers. Results include a sentence-by-sentence highlight showing exactly which lines are flagged as AI. Best accuracy of all modes since full text is available.
Perplexity
Burstiness
Vocabulary
Structure
Sentence highlight
Web Checker
URL analysis
Analyzes a webpage URL using platform context signals — domain patterns, URL structure, publication metadata. Since direct page content cannot always be fetched from the browser, we analyze what's visible and recommend copy-pasting the article text into Text Checker for deep analysis.
URL signals
Platform patterns
Metadata analysis
Video Checker
YouTube · Instagram
Analyzes YouTube and Instagram video URLs by examining title structure, description patterns, caption language, and posting metadata for AI signals. AI-generated videos typically use text-to-speech narration, stock footage, AI-written descriptions with keyword stuffing, and generic titles. For best accuracy, paste the video description into the Text Checker.
Title structure
Description patterns
Caption analysis
Metadata signals
Plagiarism Checker
Source detection
Runs the same text through an additional layer of analysis — checking for phrases, sentence structures and writing patterns that match known AI training datasets and published sources. Flags content that appears to originate from publicly available web sources or resembles known AI-generated templates. Combined AI + plagiarism results shown together.
Source matching
Template detection
AI + plagiarism combined
Important note on accuracy: No AI detector — including GPTZero, Originality.ai or VeriAI — is 100% accurate. False positives (flagging human writing as AI) and false negatives (missing AI writing) do occur. VeriAI achieves approximately 65% accuracy on the free tier and 85%+ on Pro (with full Gemini AI analysis). Results should be used as one signal among many — not as sole evidence in academic, employment or legal decisions.
Who Uses VeriAI
Built for every community that values authenticity
Different people use VeriAI in different ways. Select your community to see exactly how it works for you.
For Educators & Academic Institutions
Academic integrity is under pressure. VeriAI helps teachers identify AI-generated assignments, essays and research papers — without falsely accusing genuine students.
How to use VeriAI in your classroom:
📋 Step 1: Students submit assignments as Word or PDF files
🔍 Step 2: Upload the file to VeriAI's Text Checker
📊 Step 3: Review the sentence-by-sentence highlight — red = AI-generated
📈 Step 4: Use the distribution bar (AI% / Mixed% / Human%) as evidence, not final verdict
⚠️ Always pair with a student conversation before taking action. VeriAI is an indicator, not proof.
Best plan: Team ₹999/month — covers your full department (5 teachers)
85%
Accuracy on academic essays
1,000
Words per free scan
∞
Scans on Pro/Team plan