AI Paraphrase Detector
The best 50 AI Paraphrase Detector tools - Free & Paid
Explore 50 AI for AI Paraphrase Detector
AI Humanizer turns AI‑generated text into natural language while preserving meaning. It detects AI origin with leading systems, supports 50+ languages and long documents, offers Chrome extension and API, and lets users select pre‑built models or clone their own style.
Subscription
- $8.25/mo
AISEO Free paraphrasing tool for content with high uniqueness
Free trial
AI Undetect evaluates AI‑generated content and rewrites it into human‑like text in 20+ languages. It integrates with ChatGPT, Claude, and Jasper, offering manual and auto‑perfect modes, and shows unified detection results from GPTZero, Copyleaks, Turnitin, Originality AI, and more.
Paid
Paraphrasing Tool rewrites up to 2,000 words per batch, allowing style selection and short‑form editing in 110+ languages. It provides a variability score, a plagiarism checker, and serves marketers, copywriters, educators, and students.
Freemium
- $29/mo
AHelp is an AI platform offering essay writing, paraphrasing, grammar and plagiarism checks, and AI source finding in multiple languages. It generates outlines, expands paragraphs, and validates originality, streamlining drafting and quality control.
Subscription
- $4.17/mo
An AI platform that rewrites text in eight styles—Standard, Fluency, Humanizer, Simplify, Creative, Academic, Shorten, Expand—while supporting custom modes, tone settings, synonym selection, audio‑to‑text, OCR, and a research panel. Available via browser extensions, mobile apps.
Free
AI Humanizer refines text by restructuring sentences to improve flow and reduce mechanical patterns while preserving meaning. It offers adjustable rewrite modes, selective paragraph editing, keyword protection, and built‑in AI detection and plagiarism checks.
Free trial
- $8/mo
Undetectable AI scans text and images for signatures of models like GPT‑4, Gemini, and Claude, combining multiple engine results into a probability score. It handles paraphrased content, supports 50+ languages, and offers a Chrome extension and API.
Free
- $5/mo
Aithor automates essay creation, literature reviews, and topic ideation for academic and creative writers. It provides access to 10 million verified sources, manages MLA/APA citations, offers grammar checking, paraphrasing, summarization, and tone adjustment to streamline writing.
Freemium
The AI plagiarism checker from plagiarismcheck.org uses advanced AI technology to detect AI-generated content and plagiarism, supports various file formats, and is useful in academia, SEO, and recruitment.
Freemium
- $5.99
GPTZero AI Detector scans documents for potential AI-generated content, providing in-depth results on AI probabilities, vocabulary analysis, and hallucination detection, as well as plagiarism checking and authorship verification capabilities.
Freemium
- $12/mo
Detecting‑AI scans text in 50+ languages, marking AI‑generated sentences with probability scores. It integrates with Chrome, Moodle, Zapier, and offers an API, delivering up to 98% accuracy and low false‑positives while protecting user privacy.
Freemium
- $7/mo
An AI paraphrasing tool that rewords up to 125 words per input with unlimited use. Offers ten modes, a synonym slider, AI thesaurus, export options, originality detection, browser extensions, and multilingual support for students, researchers, and professionals.
Subscription
BypassAI rewrites AI‑generated content to bypass detection tools like GPTZero, Turnitin, and ZeroGPT, removing watermark patterns and spam‑like language. It supports 30+ languages, preserves meaning, and improves SEO‑friendly readability for academic, editorial, and marketing use.
Subscription
- $6.99/mo
ContentDetector.AI is a free tool that identifies AI-generated written text, including Chat GPT and GPT 3 content, and provides an estimated percentage score of AI generation likelihood.
Free
DecEptioner rewrites machine‑generated text to evade AI detection. A browser extension plugs into detectors like ZeroGPT, Turnitin, GPTZero, offering model‑based paraphrasing, readability scoring, universal rewrite mode, and local history for quick revisions.
Freemium
Rephras is an AI tool for composing, paraphrasing, and plagiarism checking. It offers 20 modes, 100+ languages, and a keyword-based content mode.
Freemium
AI Paraphrasing Tool rewrites user text into unique, grammatically correct output using six specialized modes (Creative, Fluency, Formal, Academic, Blog, Anti‑Plagiarism). It detects plagiarism, preserves citations and keyword placement, and exports results to Word, PDF, or TXT.
Paid
AI Detector evaluates text for AI authorship likelihood, delivering a percentage score. It compares style, vocabulary, sentence length, and coherence against extensive human and AI datasets, enabling targeted edits for academic, SEO, and publishing standards.
Free
- $5.91
Phrasly is an AI tool that generates undetectable text, bypasses AI detectors, provides grammar checking, supports multilingual content generation, and features a co-writing assistant for assignments, content creation, and skill enhancement.
Free trial
Bypass AI rewrites AI‑generated text into human‑readable, undetectable content while preserving SEO keywords and style. It delivers results in seconds, offers tone customization, and includes integrated plagiarism and AI detection checks for verified originality.
Freemium
- $4.99/mo
TextAdviser delivers AI‑powered language tools: grammar checking, plagiarism detection, syntactic analysis, fast text generation, rewriting, tone humanization, summarization, and name/title creation. It supports English, Spanish, Portuguese, Italian, French, and German for writers, students, markete
Free
AI Humanizer transforms AI‑generated text into natural prose with Basic, Aggressive, and Enhanced modes. It offers synonym suggestions, rephrase options, keyword locking, multi‑language support, and outputs grammar‑correct, low AI‑detector scores without registration.
Subscription
- $20/mo
AI Detector Pro provides comprehensive recognition of AI-generated text and includes advanced features to manage AI generation reports efficiently.
Free trial
AI Sentence Rewriter automatically rewrites text using NLP, offering modes such as Formal, Casual, and Creative to adjust tone. It corrects grammar, punctuation, and spelling, suggests synonyms, and paraphrases to avoid plagiarism, aiding writers, students, and marketers globally.
Free
Rewriter PRO AI converts machine‑generated text into natural, detector‑proof language with adjustable fluency (basic, intermediate, advanced). Users set tone—formal, creative, etc.—and target audiences across emails, proposals, blogs. It supports multiple languages and offers instant grammar correct
Free
Humanize AI rewrites AI‑generated text into natural, human‑readable prose. It offers AI detection, plagiarism checking, grammar correction, paraphrasing, and an AI Writer. Its AI Article Agent creates keyword‑optimized content while maintaining readability for academics, marketers, and SEO writers.
Subscription
- $7/mo
Wordvice AI provides real‑time grammar checking, paraphrasing, translation, summarization, plagiarism and AI‑content detection, plus citation generation across multiple languages. It integrates with Chrome and Word, supporting students, researchers, professionals, teams, and offers on‑demand human e
Freemium
- $8.45/mo
BypassGPT rewrites AI‑generated text into human‑like, plagiarism‑free content. It supports keyword‑rich SEO, file upload and API integration, helping students, bloggers, webmasters, and agencies avoid AI detection for improved readability and brand voice.
Free
- $8/mo
ZeroGPT is a comprehensive AI tool suite offering advanced features for content detection, text refinement, and translation, including AI detection, plagiarism checking, humanization, and summarization.
Freemium
- $7.99/mo
X Detector analyzes up to 5,000 characters, giving per‑word probability scores to identify whether a passage was written by ChatGPT, Claude, Gemini, or a human. It supports over 20 languages, processes millions of texts, and encrypts data for privacy.
Freemium
Rewrites text in seven styles—Simple, Creative, Formal, etc.—across 17 languages, preserving meaning while enhancing grammar, punctuation, and readability. Removes duplicate phrases for plagiarism‑free output and works with plagiarism/readability tools for students, writers, and SEOs.
Paid
- $3
ParagraphAI offers real‑time grammar correction, one‑tap email drafting, and instant summarization of web pages and PDFs. It provides multilingual translation, customizable tone filters, a template library, and an instruction engine for repetitive tasks across mobile, desktop, and Chrome.
Free
StealthWriter converts AI‑generated text into natural, human‑like content by correcting errors and odd phrasing across multiple languages. It includes an AI detector to confirm human likeness and supports models like ChatGPT, Claude, or Llama.
Free
- $20/mo
AI Content Detector - Trusted GPT-4 analyzes text to identify human-written versus AI-generated content. It offers document uploads, supports multiple languages, and provides percentage-based insights on originality, making it useful for educators and content creators.
Free
Originality.ai evaluates text for AI generation, plagiarism, factual accuracy, readability, grammar, and SEO. The Chrome extension and web app enable on‑page checks, bulk scanning, PDF uploads, and API integration for writers and editors.
Free trial
- $12.95/mo
This AI tool is a free online writing assistant with advanced features to enhance writing skills and prevent plagiarism.
Freemium
iAsk.Ai delivers instant, factual answers to natural‑language questions from authoritative web sources, and offers essay drafting, advanced grammar checks, academic summarization, PDF analysis, image generation, URL bullet‑point briefs, and one‑click grammar correction. Accessible via browser extens
Freemium
- $9.95/mo
AI Essay Checker spots AI‑generated content, grammar errors, and plagiarism in real time. It offers multilingual support, a rich text editor, and local processing for privacy, aiding students, teachers, writers, SEO pros, and legal professionals.
Freemium
AI Humanizer rewrites AI‑generated text into natural, human‑like prose while preserving context, keywords, and facts. It passes GPTZero, Turnitin, and CopyLeaks, enhancing readability, engagement, and SEO with plagiarism‑free content.
Free
- $8/mo
AI-based plagiarism remover rewrites duplicate text while preserving context and readability, offering modes (Word Changer, Formal, Shorten), file upload/download, 15+ languages and integrated tools for checking, paraphrasing, grammar, summarizing and citation generation and export.
Free
AI Detector Deutsch identifies whether German text is human or AI‑generated by analyzing linguistic patterns, syntax, and context. It highlights AI‑created sections, enabling rapid authenticity checks for academic work, research, and content creation.
Freemium
AI to Human Text Converter turns AI‑generated content into natural, human‑readable prose by removing AI signatures and improving flow and readability in multiple languages. Instantly rewrites drafts to sound conversational, bypassing AI‑detectors for writers, academics, and marketers.
Free
Humanize AI converts AI‑generated text into natural, readable language while preserving meaning, keywords, and SEO value. It supports multiple languages, works on any device without registration, removes plagiarism, and evades detection systems.
Free
Copyleaks delivers AI text and image detection, plagiarism checking, grammar correction, and text moderation in 30+ languages. It integrates via API, LMS, browser extensions, and Google Docs, supports major LLMs, and ensures secure, compliant workflows for education and enterprise.
Free
- $13.99/mo
BypassGPT rewrites AI‑generated content to be human‑readable, correcting grammar and punctuation while producing SEO‑friendly, plagiarism‑safe text. It also bypasses spam filters and supports over 50 languages with an API for marketers and students.
Subscription
- $7/mo
AI Text Humanizer turns machine‑generated prose into natural, human‑readable text, removes repetitive patterns, offers readability scores, and supplies API and web interface with counters. It supports multiple languages, protects data, and assists students, writers, marketers, and corporate teams.
Freemium
Humanize AI Text converts AI‑generated content into natural, human‑sounding prose while preserving meaning. It works browser‑free, supports unlimited words in multiple languages, and produces plagiarism‑free output that passes AI‑detection tools.
Freemium
AIHumanize.io rewrites AI‑generated text into natural, human‑like prose while preserving the original meaning. It offers scene‑specific editing for academic, blog, or business content, produces multiple variants, and verifies outputs against major AI‑detectors.
Subscription
- $6/mo
TextFlip.ai is a Chrome extension that paraphrases blog posts, essays, product descriptions, and social media content while preserving meaning. It supports keyword replacement, custom instructions, AI‑detector evasion, PDF chat, and summarization for writers, students, and marketers.
Freemium
- $19/mo