v4 MODEL 99.2% accuracy · internal benchmark Grammar · style · readability · sentence-level feedback

AI-powered writing improvement tool — improve every draft.

Paste any text — get a Writing Quality Score from 0–100 with sentence-level feedback on grammar, style, readability, and overall writing quality. 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
+
Texts analyzed
across 142 countries
Quality scoring accuracy
internal benchmark
+
Happy users
writers · students · teams
Free AI writing tools
all in one workspace
Every signal real readers actually check
GPTZero
Turnitin
Originality.ai
Copyleaks
Winston AI
ZeroGPT
Sapling
The same paragraph, before and after

From draft to polished: grammar + clarity + readability in one click.

Drag the handle. Left is a weak draft full of hedge phrases and bloated sentences. Right is the same draft with sentence-level improvements — same meaning, tighter prose. Quality metrics scored both versions live.

Before · weak draft Quality 42

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.

Clarity 42 Readability Grade 14 Sentence variance 0.2 Hedge phrases 6
After · TextSight improved Quality 87

Climate change isn't one problem — it's a stack of them. The effects show up everywhere: what we eat, how we travel, where insurance still works.

Clarity 87 Readability Grade 9 Sentence variance 0.8 Hedge phrases 0
Drag the handle to compare Try this on your own text
The Writing Quality Score

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

The Writing Quality Score is a composite of grammar, style, readability, sentence variance, and vocabulary range. Sentence-level improvements show you exactly which lines pull your score down — and how to fix them.

Sentence-level improvements for clarity and impact.

Replacing repetitive phrasing with varied, clear sentence structures. Tightening verbs. Cutting hedge phrases ("it is important to note that…"). Improving readability without changing your meaning, your facts, or your citations.

  • Scored against grammar, style, readability, and variance signals
  • Numbers, names, and citations are locked as anchors
  • Pick a tone: conversational, professional, academic, blog, email
Grammar
98
Clarity
87
Readability
Grade 9
Sentence variance
0.8
Vocabulary range
92
What's inside

More than a verdict — a complete workflow.

Scoring, refinement, 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 Writing Quality 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 sentence improvements

Weak sentence? Hit Improve. Choose a tone. Get a clearer rewrite that preserves your meaning and facts.

Before clarity42
After clarity87
Tones available5

20 free AI writing tools

Score, Write, Refine, Research — a full workspace beside the writing checker, 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 a Writing Quality Score plus Rewrite Suggestions. Apply them one-by-one, or run the full Rewriter.

Improved — clarity 42 → 87
Score: 12 → 94 / 100
Pricing

Free to try. Fair as you grow.

Cancel anytime. No card to start. Scoring and refinement 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 rewriter uses
  • writing analysis & Writing Quality 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 rewriter words / month
  • Writing Quality Score + before/after
  • Scan history (14 days)
  • Email support
Start Starter
Business
$29.99/month
Billed $359.88/year — Save $120
For agencies, newsrooms, content teams.
  • Everything in Pro
  • 50,000 chars per scan
  • 40,000 rewriter words / mo + custom presets
  • API access (10K calls/mo)
  • 5 team seats
  • Priority + chat support
Start Business
Need more? See Enterprise ($79.99/mo) — 150K rewriter words, 50K API calls, 10 seats (+$8/seat), dedicated support & SLA →

Ship writing that reads like you — every single time.

Free to try. No card. Your first scan takes about six seconds.

Start free — no card Try the writing checker
Works in 50+ languages · Web · iOS & Android · Used in 142 countries
Try it free — no signup