See exactly which words
are AI-written
The only free AI detector with word-level heatmap and rewrite suggestions โ not just a score.
Why AIDetector.life is Different
Other detectors give you a number. We show you the evidence.
Word-Level Heatmap
See which individual words triggered the AI signal โ not just whole sentences. Hover to see the score.
Rewrite Suggestions
For each flagged sentence, get a more human-sounding alternative. Detector + humanizer in one tool.
Transparent Scoring
Every signal explained: AI phrases found, sentence uniformity (CV), lexical diversity (TTR). No black box.
Actually Free
No word limits, no sign-up, no paywall. Run as many checks as you need.
How to Check AI-Written Text Without Guessing
A good AI detector should not force you to trust a single percentage. A score is useful, but the next question is always: which part of the text caused the signal? AIDetector.life shows a word-level heatmap, sentence-level signals, and rewrite suggestions so teachers, editors, students, and content teams can review evidence instead of arguing over a black-box result.
1. Paste at least 100 words
Short snippets are noisy. For a more reliable AI writing check, paste a full paragraph, essay section, article draft, product description, or email.
2. Review the heatmap
Look for repeated formal phrases, uniform sentence rhythm, low variation, and words that carry a high AI signal. Use the heatmap as evidence, not as a verdict.
3. Fix the flagged sections
Add specific examples, original observations, citations, customer details, or clearer human judgment. Then run the text through the detector again.
Who Uses This Free AI Detector?
Students and applicants
Check essays, statements, and application drafts before submission. The goal is not to hide AI use, but to make sure the final work has real reasoning and a personal voice.
Teachers and universities
Use the tool as a pre-review signal when a paper feels too polished or too uniform. Always combine detector results with rubrics, sources, and process evidence.
Editors and content teams
Review blog posts, SEO pages, product copy, and contributor drafts for generic AI patterns before publishing. The heatmap makes editing faster.
AI Detector FAQ
Is this AI detector free?
Yes. You can paste text and check it instantly without signing up. The page is designed for fast checks, not gated reports.
Can an AI detector be 100% accurate?
No detector is perfect. Formal human writing can be flagged, and heavily edited AI text can look more human. Treat the result as a review signal and inspect the highlighted words and sentences.
What should I do if my human text is flagged as AI?
Add concrete details, source notes, lived examples, domain-specific judgment, and varied sentence structure. Then re-check the text and keep a record of drafts or sources when the stakes are high.