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AI Content Detector

Free AI content detector for pasted text or a live URL — get an explainable AI score, evidence, and sentence-level analysis.

on-device text / url → AI score free · no account

AI Content Detector

Check pasted content or analyze a webpage URL for signals commonly associated with AI-generated and AI-assisted writing.

Free No account URL scanning Signal, not proof
0 words · 0 characters Longer samples generally provide stronger signals.

Analyze a webpage directly

Enter a public article or webpage URL. We'll fetch the page, extract its primary content, and analyze the writing signals.

No need to copy and paste the article manually.
Analyzing content...
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How to use it

AI Content Detector
in three moves.

01

Choose your input

Pick "Paste Text" to check written content directly, or "Scan Webpage" to analyze a live, publicly accessible URL instead.

02

Add your content

Paste the article, essay, email, or draft into the text box — or drop in the full URL of the page you want to check.

03

Run the analysis

Click Analyze. For URLs, the tool fetches the page and extracts the primary content before scanning it for AI-associated writing signals.

04

Read the result

Review the AI-likelihood score, classification, and confidence level, then check the evidence and sentence-by-sentence breakdown to see exactly what drove it.

Formats & limits

What goes in, what comes out.

Format field guide
Input Output Typical saving Best for
Pasted text (essay, article, blog post, email, report) AI-likelihood score + evidence list + sentence-level labels Skips manual copy-paste for standalone drafts Reviewing your own writing before you publish or submit it
Public webpage URL Extracted page content run through the same detection report No need to manually copy a full published article Auditing live pages, competitor content, or guest posts
Why this one

Built against the ways these tools disappoint.

We ran the same files through the popular alternatives first. These are the gaps we found, and what this tool does instead.

01

Most free AI detectors make you copy and paste an entire article by hand, and give you a single confidence score with no explanation behind it.

ToolsVale scans a live webpage URL directly and shows the evidence and sentence-level signals behind every score, not just a number.

test: Paste an obviously AI-generated paragraph and confirm the sentence-level breakdown highlights the specific lines driving the result.
02

Many detectors present a flat "AI" or "Human" verdict, implying a certainty no detection system can actually guarantee.

Every result is shown as a probabilistic signal with a confidence level and a clear disclaimer — never framed as proof.

test: Run any human-written sample and check that the tool reports a signal and confidence range, not an absolute guarantee either way.
Key Factors

Factors That Make This AI Content Detector Reliable

Explainable scoring

Every result ships with the evidence behind it — not just a percentage — so you can see which signals actually drove the classification.

Sentence-level breakdown

Individual sentences are labeled and color-coded, making it easy to spot exactly which parts of a text triggered an AI-associated signal.

No copy-paste required

The webpage scanner fetches a URL and extracts its primary content automatically, so you can check a live page in seconds.

Free, no account

Run checks without signing up or paying. Content is only sent for analysis when you actively choose to run it.

The detail

How this actually works.

Free AI Content Detector

ToolsVale AI Content Detector helps you check whether text contains patterns commonly associated with AI-generated or AI-assisted writing. Paste text directly into the detector or scan a public webpage URL without manually copying the entire article.

The detector analyzes available writing signals and provides an easy-to-understand result with confidence, supporting evidence, and sentence-level analysis when available.

Check a Webpage URL for AI-Generated Content

Don’t want to copy and paste an entire article? Use the webpage scanner to analyze content directly from a public URL.

Enter the URL of an article, blog post, documentation page, or other publicly accessible webpage. ToolsVale fetches the webpage, extracts its primary text content, and sends the extracted content through the AI detection analysis.

How URL AI detection works

  1. Enter a public webpage URL.
  2. ToolsVale fetches the webpage.
  3. The primary text content is extracted.
  4. The extracted content is analyzed for AI-associated writing signals.
  5. The result is displayed with available evidence and sentence-level signals.

Check Text for AI-Generated Writing

You can also paste an essay, article, blog post, report, email, assignment, or other written content directly into the detector.

The analysis looks at characteristics of the submitted writing and presents the available signals in a simple report. Longer samples generally provide more information for analysis than very short passages.

What Does an AI Content Detector Look For?

AI content detectors analyze characteristics of writing rather than directly observing who created the text. Depending on the analysis engine, these characteristics can include sentence structure, vocabulary variation, predictability, repetition, consistency, and other linguistic or statistical patterns.

Sentence structure

Sentence structure and variation can provide signals about how consistently a piece of writing is constructed.

Vocabulary variation

Vocabulary diversity and repeated word patterns can provide additional information when analyzing a sufficiently long sample.

Predictability

Highly predictable language patterns may contribute to an AI-associated classification depending on the content and analysis system.

Repetition and consistency

Repeated phrases, similar sentence structures, and unusually consistent patterns can be among the signals considered during analysis.

How to Read Your AI Detection Result

An AI detection result indicates how strongly the analyzed content matches patterns evaluated by the detection system.

A stronger AI-likelihood signal means the text contains more characteristics associated with AI-generated writing according to the analysis. A weaker signal means fewer such characteristics were detected.

The result should not be interpreted as definitive proof of authorship. Human-written content can sometimes resemble AI-generated writing, while AI-generated content can sometimes be difficult to detect, particularly after substantial editing or rewriting.

Why Use ToolsVale AI Content Detector?

  • Free to use: Check content without creating an account.
  • Webpage URL scanning: Analyze publicly accessible webpage content without manually copying the article.
  • Explainable results: Review available signals that contributed to the result.
  • Sentence-level analysis: Inspect individual sentence signals when provided by the analysis engine.
  • Simple interface: Paste text or enter a URL and start an analysis quickly.
  • Privacy-focused design: Content is submitted for analysis only when you choose to run the detector.

Who Can Use an AI Content Detector?

Students and educators

AI detection can be used as one additional signal when reviewing written assignments. It should not be treated as the sole evidence of academic misconduct.

Writers and editors

Writers and editors can use AI detection to review passages that may contain characteristics associated with generated text.

SEO professionals

SEO teams can analyze articles and website content for AI-associated writing patterns as part of a broader editorial review process.

Website owners

The URL scanner makes it possible to analyze publicly accessible webpages without manually copying large amounts of content.

Content teams

Businesses and publishing teams can use AI detection as one part of a broader content quality and review workflow.

AI Detector vs. Plagiarism Checker

An AI detector and a plagiarism checker measure different things.

An AI detector looks for characteristics commonly associated with AI-generated or AI-assisted writing. A plagiarism checker looks for matching or substantially similar content from existing sources.

For example, original AI-generated content may not match another webpage, so a plagiarism checker could find no matching source while an AI detector identifies AI-associated writing signals.

For important academic, professional, or editorial decisions, these tools should be used together with human review and other available evidence.

Can an AI Detector Be 100% Accurate?

No AI detector should be treated as a guaranteed method for proving whether a person used AI.

AI detection systems estimate the presence of patterns associated with AI-generated writing. Human-written content can sometimes trigger these patterns, while edited or paraphrased AI-generated content can sometimes be harder to detect.

For this reason, ToolsVale presents AI detection as a probabilistic analysis rather than definitive proof of authorship.

Frequently Asked Questions

What is an AI content detector?

An AI content detector is a tool that analyzes written text for patterns commonly associated with AI-generated or AI-assisted writing.

How does an AI detector work?

AI detectors analyze characteristics such as sentence structure, vocabulary variation, predictability, repetition, and other linguistic patterns. The exact signals vary between detection systems.

Can an AI detector detect ChatGPT text?

An AI detector may identify patterns associated with text produced by ChatGPT and other generative AI systems. However, a detector should not be treated as definitive proof that a specific AI system created the content.

Can I check a webpage URL for AI-generated content?

Yes. ToolsVale supports webpage URL analysis. Enter a publicly accessible webpage URL and the tool can fetch the page, extract its primary content, and analyze the available text.

Is the ToolsVale AI detector free?

Yes. ToolsVale’s AI content detector is available as a free online tool.

Can AI-generated content pass an AI detector?

Yes. AI detection is probabilistic. AI-generated content can sometimes produce fewer detectable signals, particularly after editing, rewriting, or other transformations.

Can human-written content be incorrectly detected as AI?

Yes. Human-written content can contain characteristics that resemble AI-generated writing. Detector results should therefore be treated as signals rather than definitive evidence.

What is the difference between an AI detector and a plagiarism checker?

An AI detector looks for writing patterns associated with AI-generated content, while a plagiarism checker looks for matching or substantially similar material from existing sources.

What types of content can I check?

You can analyze articles, blog posts, essays, reports, website copy, documentation, and other written content. URL scanning requires a publicly accessible webpage with extractable text.

Should I rely on an AI detector alone?

No. AI detection should be one part of a broader review process. For high-stakes decisions, consider drafts, revision history, sources, citations, writing samples, and human review alongside any detector result.

Last reviewed August 2026 · this tool runs on-device.

FAQ

The questions people actually type in.

What is an AI content detector?

An AI content detector is a tool that analyzes written text for patterns commonly associated with AI-generated or AI-assisted writing.

How does an AI detector work?

AI detectors analyze characteristics such as sentence structure, vocabulary variation, predictability, repetition, and other linguistic patterns. The exact signals vary between detection systems.

Can an AI detector detect ChatGPT text?

An AI detector may identify patterns associated with text produced by ChatGPT and other generative AI systems. However, a detector should not be treated as definitive proof that a specific AI system created the content.

Can I check a webpage URL for AI-generated content?

Yes. ToolsVale supports webpage URL analysis. Enter a publicly accessible webpage URL and the tool fetches the page, extracts its primary content, and analyzes the available text.

Is the ToolsVale AI detector free?

Yes. ToolsVale's AI content detector is available as a free online tool.

Can AI-generated content pass an AI detector?

Yes. AI detection is probabilistic. AI-generated content can sometimes produce fewer detectable signals, particularly after editing, rewriting, or other transformations.

Can human-written content be incorrectly detected as AI?

Yes. Human-written content can contain characteristics that resemble AI-generated writing. Detector results should be treated as signals rather than definitive evidence.

What is the difference between an AI detector and a plagiarism checker?

An AI detector looks for writing patterns associated with AI-generated content, while a plagiarism checker looks for matching or substantially similar material from existing sources.

What types of content can I check?

You can analyze articles, blog posts, essays, reports, website copy, documentation, and other written content. URL scanning requires a publicly accessible webpage with extractable text.

Should I rely on an AI detector alone?

No. AI detection should be one part of a broader review process. For high-stakes decisions, consider drafts, revision history, sources, citations, writing samples, and human review alongside any detector result.

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