v4 MODEL 99.2% accuracy · internal benchmark Detects ChatGPT · Claude · Gemini · Llama 3

Detect AI content. Then make it more human.

Paste any text — TextSight tells you what's AI sentence by sentence, gives you a Authenticity Score from 0–100, and rewrites the AI tells in one click. Free to try. No card. No signup.

★★★★★4.8 · 10,000+ users 1M+ texts analyzed 20 free AI writing tools 50+ languages

0 words · 0 / 5,000 chars

AI DETECTION RESULT IDLE

—%

AI PROBABILITY

Paste text to begin

Per-sentence breakdown share of sentences in each band

AI-generated—%

Mixed / edited—%

Human-written—%

SIGNALS

Perplexity—

Burstiness—

Sentence variance—

Vocabulary range—

Readability grade—

The same paragraph, before and after

From 87% AI to 2% AI in seven seconds.

Drag the handle. Left is what ChatGPT gave you. Right is what TextSight gives back — same meaning, same facts, none of the AI tells. Detectors scored both versions live.

Before · ChatGPT output 87% AI

It is important to note that climate change is a multifaceted issue that requires a comprehensive approach. Furthermore, the impacts are far-reaching and affect various aspects of our daily lives. In conclusion, addressing this critical issue necessitates collective action.

GPTZero 91% Turnitin 88% Originality 94% Copyleaks 86%

After · TextSight rewritten 2% AI

Climate change isn't one problem — it's a stack of them, and they don't sort themselves out. The effects show up everywhere: what we eat, how we travel, where insurance still works. Fixing it is going to take all of us, pulling in roughly the same direction, for a while.

GPTZero 3% Turnitin 1% Originality 2% Copyleaks 4%

Drag the handle to compare Try this on your own text

The Authenticity Score

A score that means something — and tells you what to fix.

We don't just slap a percentage on your essay. The Authenticity Score is calibrated against the detectors that matter, and Rewrite Suggestions show you exactly which sentences to change.

Originality flagged it at 96%. After TextSight: 3%.

The AI Rewriter rewrites at the sentence level — varying rhythm, breaking up repetition, replacing AI tells with the kind of phrasing a real human at a desk would actually write. Facts stay locked. Citations stay locked. Tone is whatever you pick.

Tested against the 5 detectors people actually use
Numbers, names, and citations are locked as anchors
Pick a tone: conversational, professional, academic, blog, email

Originality.ai

3% AI

GPTZero

2% AI

Copyleaks

1% AI

Winston AI

4% AI

Turnitin

2% AI

What's inside

More than a verdict — a complete workflow.

Detection, scoring, rewriting, and 20 supporting tools — all in one workspace, no tab-switching.

Sentence-by-sentence AI highlighting

Every sentence gets its own confidence score — color-coded right inside the text. The Authenticity Score on the side rolls them up into a 0–100 number you can act on.

In today's rapidly evolving digital landscape, organizations must leverage cutting-edge technologies to remain competitive. Our team shipped the new dashboard on a Tuesday — nobody slept much that week.

Rewrite Suggestions

For every flagged sentence, a one-click rewrite that keeps the meaning but loses the AI tell.

Suggestions per scan~6 — 12

Time to apply1 click

Meaning preserved100%

Model attribution

Was it ChatGPT, Claude, Gemini, or Llama 3? We fingerprint stylistic patterns down to the model family.

ChatGPT-4o68%

Claude 3.522%

Gemini 1.58%

One-click AI Rewriter

Detected as AI? Hit Rewrite. Choose a tone. Get a rewrite that reads like you, not a chatbot.

Before87% AI

After2% AI

Tones available5

20 free AI writing tools

Detect, Write, Refine, Research — a full workspace beside the detector, free on every plan.

Detect tools5

Write tools5

Refine + Research10

Privacy by default

Your text is never stored, never used for training, never seen by humans. GDPR & SOC 2 in progress.

Retention0 seconds

Used to trainNever

See all features

How it works

Three steps. Six seconds to a verdict.

No setup. No card. 3 free scans a day, up to 5,000 characters each.

1 PASTE

Drop in your text

Paste a paragraph, upload a .docx or .pdf, scan a URL, or feed us a batch via API.

Pasted 412 words

essay_draft_v2.docx · 412 words · 2.1 KB

2 ANALYZE

Our v4 model runs

Five classifiers vote on every sentence — perplexity, burstiness, stylometry, embeddings, and a transformer head.

Scan complete — 4.8s

5 / 5 classifiers agree

3 ACT

Fix it or ship it

Get an Authenticity Score plus Rewrite Suggestions. Apply them one-by-one, or run the full AI Rewriter.

Rewritten — 87% → 2% AI

Score: 12 → 94 / 100

Built for

Whatever you write, whoever reads it.

Same engine, four very different jobs. Each plan tailors the workflow.

Students

Check your essay before your professor does. Fix the parts that read like ChatGPT — without losing your argument.

.edu discount on Pro ($13.99)
Academic tone preset
Citation Generator built in

For students →

Writers & bloggers

Ship copy your editor won't flag. Detect AI in your drafts, rewrite what's stiff, keep your byline yours.

Voice-preserving rewrite
Chrome & Word extensions
10,000 AI rewriter words/mo

For writers →

SEO & marketers

Google penalizes obvious AI. Audit your content library and rewrite underperformers at scale via API.

Bulk scan up to 10,000 URLs
WordPress plug-in
50,000 API calls / month

For SEO teams →

Educators

Defensible AI flagging. Sentence-level evidence and model attribution you can actually defend in a meeting.

Canvas / Moodle LMS
Class-wide bulk scans
Sentence-level evidence

For educators →

vs. the field

Half the price of Originality. Twice the workflow.

Same 1,000-doc test set, mixed across GPT-4o, Claude 3.5, Gemini 1.5, and human writers. Apples to apples.

	TextSight From $9.99/mo BEST OVERALL	Originality.aiFrom $19.99/mo	GPTZeroFrom $15.00/mo	CopyleaksFrom $13.99/mo	ZeroGPTFree / $9.99	Winston AIFrom $18/mo
Detection accuracy	99.2%	98.2%	96.5%	99.1%	92.0%	99.0%
Authenticity Score (0–100)
Rewrite Suggestions
Built-in AI Rewriter						Add-on
20 free writing tools			3 tools	5 tools
Languages supported	50+	15	38	30+	26	20+
Free tier	3 scans/day, 5K chars	None	10,000 / mo	None	Unlimited	2,000 / mo
Starting price	$9.99/mo	$19.99/mo	$15.00/mo	$13.99/mo	$9.99/mo	$18.00/mo
API access

Pricing as of May 2026. Full side-by-side comparison →

Free for everyone

20 AI writing tools, all in one workspace.

Detect, write, refine, research. Use any tool free — no signup. Upgrade only when you need volume.

Detect · 5 tools

AI Detector · Hallucination Detector · AI Image Detector · AI Voice Detector · Plagiarism Checker

Open Detect tools →

Write · 5 tools

AI Rewriter · Paraphraser · Summarizer · Translator · Essay Outline Generator

Open Write tools →

Refine · 5 tools

Grammar Checker · Readability Score · AI Vocabulary · Word Counter · Text Compare

Open Refine tools →

Research · 5 tools

Fact Checker · Citation Generator · YouTube Summarizer · PDF Summarizer · URL Summarizer

Open Research tools →

Loved by writers

Saved careers, classrooms, and content calendars.

★★★★★

I had three articles flagged by an editor as AI. TextSight showed me which sentences and rewrote them — they cleared the next round.

Jules K.

Freelance journalist · New York

★★★★★

I run 12 SEO writers. TextSight is the only detector I trust to tell me which drafts are 70% prompt-and-paste before I pay them.

Rana M.

Head of Content · agency, 40 ppl

★★★★★

The Authenticity Score is the part nobody else does well. Knowing where to fix is more useful than knowing how bad it is.

Dr. Adams

Associate professor · UK

Pricing

Free to try. Fair as you grow.

Cancel anytime. No card to start. Detection, scoring, and rewriting included on every paid plan.

Monthly Annual Save 25%

Free

$0/forever

For students, hobbyists, and curious humans.

3 scans / day (5,000 chars each)
2 lifetime AI rewriter uses
AI detection & Authenticity Score
All 20 free tools
No credit card required

Start free

Starter

$7.49/month

Billed $89.88/year — Save $30

For light, regular use.

20 scans / day, 10,000 chars per scan
20,000 AI rewriter words / month
Authenticity Score + before/after
Scan history (14 days)
Email support

Start Starter

Questions, answered.

How accurate is TextSight.ai at detecting AI content?

TextSight.ai achieves up to 99.2% detection accuracy in our internal benchmark across major AI writing tools including ChatGPT (GPT-3.5, GPT-4, GPT-4o), Claude, Gemini, and Llama 3. Results may vary by content type, writing style, model version, and editing level. Our model is continuously updated to detect the latest AI-generated content patterns — read the full methodology at /accuracy-methodology.html.

What is the Authenticity Score?

The Authenticity Score is a 0-100 metric that tells you how "human" your text sounds. A higher score means your content reads more naturally. It's computed on every TextSight scan and every AI Rewriter rewrite so you can track your draft's progress as you edit.

Is there a free plan available?

Yes! Our free plan gives you 3 scans per day (5,000 chars each), AI detection, authenticity scoring, and 2 lifetime AI rewriter uses. No credit card required. Upgrade to Starter ($9.99/mo) for 20 scans/day, or Pro ($19.99/mo) for unlimited scans + advanced AI rewriter.

How are Rewrite Suggestions different from other tools?

Unlike other AI detectors that only flag problems, TextSight.ai provides sentence-level rewrite suggestions that you can apply with one click. Each suggestion is designed to make your text sound more natural while preserving your original meaning.

Does TextSight.ai offer an API?

Yes! API access is available on Pro, Business, and Enterprise plans. Pro includes 5,000 API calls/month, Business 10,000, Enterprise 50,000. Our REST API supports text analysis, batch processing, and more. View API documentation.

What file types can I upload for scanning?

You can upload PDF and DOCX files for analysis. We also support direct text paste and URL scanning. Enterprise users can bulk scan up to 500 documents at once.

Detect AI content. Then make it more human.

From 87% AI to 2% AI in seven seconds.

A score that means something — and tells you what to fix.

Originality flagged it at 96%. After TextSight: 3%.

More than a verdict — a complete workflow.

Sentence-by-sentence AI highlighting

Rewrite Suggestions

Model attribution

One-click AI Rewriter

20 free AI writing tools

Privacy by default

Three steps. Six seconds to a verdict.

Drop in your text

Our v4 model runs

Fix it or ship it

Whatever you write, whoever reads it.

Students

Writers & bloggers

SEO & marketers

Educators

Half the price of Originality. Twice the workflow.

20 AI writing tools, all in one workspace.

Detect · 5 tools

Write · 5 tools

Refine · 5 tools

Research · 5 tools

Saved careers, classrooms, and content calendars.

Free to try. Fair as you grow.

Questions, answered.

Ship writing that reads like you — every single time.