Free AI Writing Checker & Humanizer

Detect AI-generated writing instantly. Get a humanization score, highlighted AI words, and specific rewrite suggestions. Free AI checker — no signup needed.

How to Use Free AI Writing Checker & Humanizer

  1. Paste any AI-generated or AI-assisted text into the text input area (minimum 50 words for accurate analysis).
  2. Click Check My Writing to run the AI pattern detection — the tool scans for 30+ known AI writing patterns.
  3. Review your Humanization Score (0-100) and the highlighted AI words and phrases in your text.
  4. Read the specific fix suggestions to understand what to change and why each phrase sounds robotic.
  5. Edit your text using the recommendations, then click Analyze with AI for deeper AI-powered rewrite suggestions.

Frequently Asked Questions

How do AI detectors identify AI writing?

AI writing tends to use predictable patterns: repetitive transition words (moreover, furthermore), excessive passive voice, uniform sentence lengths, overuse of words like 'delve', 'certainly', and 'comprehensive', and lack of personal voice.

What words are common AI tells?

Common AI giveaways: 'delve', 'certainly', 'moreover', 'furthermore', 'it is worth noting', 'in conclusion', 'commendable', 'pivotal', 'robust', and 'nuanced'. Our checker flags these and suggests alternatives.

How do I make AI content sound human?

Vary sentence length dramatically (mix 5-word and 20-word sentences), use contractions, add personal opinion and experience, include specific examples and numbers, start sentences with 'I' or 'We', and use conversational language.

Does this tool check for plagiarism?

No, our tool specifically checks for AI writing patterns — not plagiarism from existing sources. For plagiarism checking, use Grammarly, Copyscape, or Turnitin. Our tool focuses only on AI pattern detection.

What is a good humanization score?

We score 0-100 where 100 is fully human-sounding. Aim for 75+ for content that reads naturally. Below 50 means the text has strong AI patterns that most readers and AI detectors will flag.

Is the Free AI Writing Checker & Humanizer really free to use?

Yes — every FreeFixo tool, including the Free AI Writing Checker & Humanizer, is 100% free with no paywall, no premium tier, and no usage limits. You do not need to create an account, enter a credit card, or share an email.