How to Check If Text Is AI Generated: Free Detection Guide

Whether you're a teacher checking student work, an editor reviewing submissions, or just curious about something you read online — here's how to check if text was generated by AI.

Use a Free AI Detector

The fastest way is to paste the text into an AI detection tool. HumanizeAI offers a free AI content detector that analyzes your text and gives you a confidence score, specific AI signals detected, and a clear verdict. No signup required — just paste and check.

Manual Detection Signs

Check for AI Vocabulary

Words like "delve," "tapestry," "landscape," "crucial," "multifaceted," and "ever-evolving" appear far more frequently in AI text than human writing. If you see several of these in one piece, that's a red flag.

Look at Sentence Structure

Count the words in each sentence. If they're all roughly the same length (15-25 words), that's suspicious. Human writers naturally vary between very short and very long sentences.

Check the Transitions

Overuse of "Furthermore," "Moreover," "Additionally," "In conclusion," and "It's important to note" is a strong AI indicator. Real people use these sparingly.

Look for Specifics

AI text tends to be vague and general. If an article about a city doesn't mention specific street names, restaurants, or personal experiences, it might be AI-generated.

Best Practice

Combine automated detection with manual review. Use HumanizeAI's free detector to get a score, then look for the manual signs to confirm. This gives you the most accurate assessment.