Detect AI-written text, fix grammar mistakes, measure readability, and get precise word replacement suggestions — all in one analysis.
Need 30 more words to analyze
Four-layer content analysis in under 20 seconds — no sign-up, no fees.
Copy and paste any content — blog posts, articles, emails, product descriptions, or social copy. The tool accepts 30 to 3,000 words per analysis.
Our tool sends your content to GPT-4o, which performs a deep multi-layer scan: AI pattern detection, grammar checking, readability calculation, and word quality review — simultaneously.
Results appear in seconds with score gauges, inline text highlights (click any highlight to see the fix), and actionable suggestions you can copy with one click.
Most tools do one thing. This tool does four — simultaneously, for free.
Identifies formulaic structure, repetitive sentence patterns, generic phrasing, and the lack of personal voice that reveal AI authorship. Returns an AI% and Human% score.
Catches subject-verb agreement errors, wrong tenses, misplaced modifiers, run-on sentences, and punctuation mistakes. Shows the exact correction with a one-sentence explanation.
Calculates a Flesch Reading Ease equivalent score (0–100) and tells you the US school grade level. Grade 6–8 is the sweet spot for most web content.
Finds weak, vague, or overused words ("very", "good", "things") and suggests 3 precise alternatives per word. Click any suggestion to copy it instantly.
Grammar issues are highlighted in red, word replacements in amber — directly inside your text. Click any highlight to jump to its detailed fix in the panel.
Lists the specific patterns in your text that trigger AI detection — so you know exactly which phrases or structures to rewrite for a more human-sounding result.
A single 0–100 score that combines grammar accuracy, readability, word quality, and writing clarity — giving you one number to aim to improve.
Practical, content-specific tips — not generic advice. Each tip targets a real weakness found in your text, from passive voice to sentence variety.
Google's Helpful Content system and E-E-A-T guidelines are designed to reward content that reads as genuine, expert, and authoritative. Content that pattern-matches to AI-generated text — even if factually accurate — risks being demoted or ignored.
Beyond AI detection, readability and word quality directly affect dwell time and engagement. Content at a Grade 7–8 reading level consistently outperforms overly complex writing because it keeps readers on the page longer, reducing bounce rate — a key indirect ranking signal.
Ai Ranko replaces four separate tools — for free.
| Feature | Ai Ranko | Grammarly | Originality.ai | Hemingway |
|---|---|---|---|---|
| AI content detection | ✓ | — | ✓ | — |
| Grammar & spelling check | ✓ | ✓ | — | — |
| Readability score | ✓ | — | — | ✓ |
| Word replacement suggestions | ✓ | ✓ | — | ✓ |
| Inline text highlights | ✓ | ✓ | ✓ | ✓ |
| AI signal breakdown | ✓ | — | ✓ | — |
| Overall quality score | ✓ | — | — | — |
| No sign-up required | ✓ | — | — | — |
| 100% free | ✓ | — | — | — |
| No word-count limits (paid) | ✓ | — | — | — |
Check AI-drafted content before publishing. Ensure it passes Google's Helpful Content guidelines and reads as authentic expert writing.
Audit client content for grammar, readability, and AI signals before going live. Catch issues that harm rankings before Google does.
Improve your writing quality before hitting publish. Get specific suggestions to replace weak words and simplify complex sentences.
Verify the authenticity of submitted work or improve your own writing quality with actionable, specific feedback on every submission.
This tool focuses on AI content detection, grammar quality, readability, and word improvement — not web-based duplicate content checking. It cannot compare your text against a live index of web pages. For web plagiarism detection, Copyscape is the industry standard. This tool's strength is analyzing writing quality and identifying AI-generated patterns.
The detection uses GPT-4o to identify structural and stylistic patterns associated with AI-generated writing — including formulaic transitions, repetitive sentence structure, generic claims, and lack of personal voice. It is highly reliable for identifying typical AI output but should not be used as sole evidence. Highly skilled human editing can reduce AI signals.
A score between 60–80 (Standard to Easy) is ideal for most web content. This corresponds to a Grade 6–8 reading level — accessible to most adults without feeling simplistic. Technical content for expert audiences can sit lower without issue.
AI writing patterns have influenced how many humans write — especially those who use AI tools regularly. If your writing is very structured, uses common transitional phrases, or lacks specific personal examples, it may score higher on AI signals. The tool flags patterns, not intent. Use the AI Signals tab to see exactly what triggered the score.
The tool works best with English content. GPT-4o supports other languages, so it can analyze them, but the grammar corrections and readability scoring are calibrated for English-language standards.
Grammarly focuses on grammar and style corrections. This tool also checks for AI content patterns, calculates a readability score, provides word replacement suggestions, and gives an overall quality score — in a single free analysis with no sign-up required.
Content is sent to the OpenAI API for analysis and is not stored by Ai Ranko. OpenAI's data usage policy applies to API usage. We do not use your content for any purpose other than returning your analysis.
Start with the Grammar tab — fix all errors first. Then work through the Words tab, replacing weak words with the suggested alternatives (one-click copy). If your AI score is high, review the Signals tab and manually rewrite those sections to add personal perspective, specific examples, and varied sentence structure.
Paste any text above and get your full AI detection, grammar, readability, and word quality report in seconds — completely free.