🔍 Free AI Content Detector

See exactly which words and sentences are AI-written — not just a score.

✦ Word-level heatmap · Rewrite suggestions · 100% free

Why AIDetector.life is Different

Most AI detectors give you a single score and stop there. We go further:

Word-level heatmap — see which individual words are statistically "AI-like," not just whole sentences
Rewrite suggestions — for each flagged sentence, we suggest a more human-sounding alternative
Transparent scoring — every signal is explained, so you understand why text was flagged

Best results: 100+ words. Short texts produce less reliable scores.

Check AI Writing Before It Becomes a Problem

Paste a complete paragraph, essay section, article draft, product description, proposal, email, or application note into the box above and click Analyze Text. The detector looks for writing patterns that often appear in AI-generated text: unusually even sentence rhythm, generic transitions, low vocabulary variation, repeated formal phrasing, and claims that sound polished but do not carry much evidence.

The goal is not to scare people with a percentage. The goal is to show where a draft needs a closer look. A useful AI detector should answer three practical questions:

Where does the text sound machine-written? Use the word heatmap and sentence view to inspect the strongest signals.
What should be reviewed by a human? High-score passages deserve context, source checking, or rewriting for substance.
How can the draft become more useful? Rewrite flagged sections with examples, evidence, decisions, and specific details.

For the best result, use at least 100 words. Very short text is harder to judge because there is not enough sentence structure or vocabulary variation to compare.

What the Result Means

The score is a review signal, not a final verdict. A high score means the text contains patterns often found in AI-generated writing. A low score means the text reads more like natural human writing. The most useful part is the evidence view:

Word heatmap shows which words carry the strongest AI signal.
Sentence view highlights full sentences that look unusually uniform, vague, or generic.
Rewrite suggestions help you turn flagged passages into clearer, more specific human writing.

If the text matters, do not rely on the percentage alone. Read the highlighted sections, compare the draft against notes or sources, and check whether the writing contains specific examples, original judgment, and real context.

Practical Review Workflow

1. Run a first check

Paste the draft and save the score, heatmap, and flagged phrases. For essays or articles, check the full section rather than one sentence. For business writing, include the surrounding context so the detector can see the real rhythm of the text.

2. Inspect the evidence

Look for generic openings, repeated transitions, perfect sentence rhythm, vague claims without examples, and paragraphs that sound correct but do not say much. These are usually better review targets than a single number at the top of the page.

3. Rewrite for substance

Add concrete details, source notes, screenshots, customer examples, research citations, draft history, or domain-specific reasoning. A human-sounding draft is usually not just more casual; it is more specific.

4. Run the check again

The goal is not to chase a perfect score. The goal is to make the writing more useful, specific, and defensible. If a passage is still flagged after revision, review whether it is too templated or whether the topic itself requires formal language.

Use Cases

Students checking essays before submission

Use the detector to find passages that sound too generic or too machine-written. If a paragraph is flagged, add your actual reasoning, course notes, source references, examples from class, or a clearer explanation of how you reached the point. Do not use the result as a way to hide AI use; use it as a way to make the essay more specific and defensible.

Teachers reviewing submissions fairly

AI detection should not become automatic punishment. Use the score as one signal alongside drafts, citations, rubrics, writing history, and conversation with the student. The word-level evidence helps you focus on specific passages instead of accusing an entire paper because of one number.

Editors and SEO teams reviewing content

Content teams can scan drafts before publishing. If a page has a high AI signal, add examples, screenshots, product details, quotes, testing notes, or workflow steps. This is often better than asking a writer to “make it sound more human,” which usually produces another generic rewrite.

Agencies and freelancers checking delivery quality

Before sending client work, run a quick check. Flagged sections often point to vague claims, overused transitions, and copy that could appear on any website. Rework those sections with the client’s actual offer, constraints, proof, and examples.

Hiring teams reviewing writing samples

Use AI detection as a triage tool, not proof. If a writing sample is heavily flagged, compare it with the role requirements, ask follow-up questions, and request a short live writing exercise if needed.

How to Interpret Common Signals

Signal	What it can mean	What to do next
Repeated transition phrases	The draft may be templated or AI-assisted	Rewrite with a clearer sequence of ideas
Very even sentence length	The writing may be over-polished	Add natural variation and specific details
Generic claims without examples	The draft may be low-substance	Add evidence, screenshots, citations, or real context
Formal academic tone	Could be human, especially in school writing	Review sources and drafts before making a judgment
High score on a short sample	The sample may be too small	Test a longer section before deciding

Fair Use and False Positives

No AI detector can prove authorship with 100% certainty. Human writing can be flagged when it is formal, templated, heavily edited, translated, or written by a non-native speaker. AI-written text can also be edited until it looks more natural.

That is why the detector is designed around evidence. Use the heatmap and sentence-level signals to decide what deserves review. For schools, workplaces, and client delivery, keep a fair process: compare the draft with notes, ask for context, and avoid making a final decision from one automated score.

Privacy Notes

The detector is designed for quick browser-based review. Still, avoid pasting confidential legal, medical, financial, or private customer data into any online tool unless your organization has approved that workflow. If you need repeatable review for a team, create a policy for what can be checked, who can see results, and how false positives are handled.

FAQ

Is this AI detector free?

Yes. The detector is free to use and does not require signup for basic checks.

Can this prove that a person used AI?

No. AI detection is probabilistic. Use the result as a signal, then review the underlying evidence, draft history, and context.

Why can human writing be flagged as AI?

Formal writing, templated essays, corporate copy, translated text, and heavily edited drafts can look similar to AI output. That is why the heatmap and sentence view matter more than the score alone.

What should I do if my text is flagged?

Add specific examples, original reasoning, source references, lived experience, and more varied sentence structure. Then check the text again.

Does a low score mean the writing is good?

Not necessarily. A low AI score only means the text looks less AI-generated. It may still be unclear, unsupported, or unhelpful. Use AI detection together with normal editing.

Can this detect ChatGPT, Claude, Gemini, and other AI models?

It looks for text patterns common across many AI models, including ChatGPT, Claude, Gemini, LLaMA, and similar systems. Model-specific certainty is not guaranteed, especially after heavy editing.

Go Deeper: Advanced Features

Not just a score — see the full picture: