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Jenni AI
Academic writing editor with autocomplete, citation insertion, PDF chat and AI-edit suggestions.
Academic & Student Tools from USD 12.00
Free tools
71 tools with some level of free access, of which 5 are free outright rather than freemium. Where the vendor publishes a word limit, it is on the listing.
Free of charge is not free of consequence
Your text still goes to the vendor, and free tiers are where retention policies are loosest and training opt-outs are most often reserved for paying customers. That is a reason to read the listing, not a reason to avoid free tools.
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Textero AI
Academic writing assistant with essay drafting, AI detection and grading tools, metered in AI credits.
Academic & Student Tools from USD 8.25
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GPTHuman AI
AI humanizer with per-output word caps, watermark removal for ChatGPT and Claude, and a humanizer API.
AI Detector Bypassers from USD 8.25
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GPTinf
Humanizes AI text and bundles an AI detector, paraphraser, plagiarism and grammar checkers.
AI Detector Bypassers from USD 4.99
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HIX Bypass
Rewrites AI text in Fast, Aggressive or Latest mode and scores it with a bundled AI detector.
AI Detector Bypassers from USD 14.99
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Netus AI
AI Bypasser that rewrites AI text, plus paraphraser, summarizer and unlimited AI detection.
AI Detector Bypassers from USD 14.00
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WriteHuman
Rewrites AI text into human-style output with multiple variations per request and AI detection checks.
AI Detector Bypassers from USD 20.00
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Ahrefs AI Content Detector
Free no-signup AI content detector for short text, part of Ahrefs' free SEO writing tools.
AI Detectors from USD 0.00
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Copyleaks AI Content Detector
Enterprise AI and plagiarism detection in one report, with LMS integrations and 30+ language support.
AI Detectors from USD 13.99
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Crossplag AI Content Detector
Free English-only AI content detector offered alongside Crossplag's cross-language plagiarism checker.
AI Detectors from USD 0.00
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Decopy AI Detector
Free no-login AI detector handling up to 200,000 characters with shareable online or PDF reports.
AI Detectors from USD 9.99
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Detecting-AI
Free AI detector taking 15,000 characters per scan without signup, plus detector and humanizer APIs.
AI Detectors from USD 7.00
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Grammarly AI Detector
Free AI detector from Grammarly returning a percentage AI score, with a Pro agent for flagged phrases.
AI Detectors from USD 12.00
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Isgen
Multilingual AI detector with sentence-level highlighting, bulk scanning and an academic-priced plan.
AI Detectors from USD 8.00
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Originality.ai
AI detection plus plagiarism, fact and readability checks aimed at web publishers and content agencies.
AI Detectors from USD 12.95
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Pangram Labs
Research-led AI text detector for schools and platforms, with a free daily quota and a usage-based API.
AI Detectors from USD 20.00
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QuillBot AI Detector
Free AI detector inside QuillBot's writing suite, with sentence highlights and a 1,200-word free scan.
AI Detectors from USD 8.33
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Sapling AI Content Detector
Free AI content detector with sentence-level scores, a Chrome extension and a metered developer API.
AI Detectors from USD 12.00
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Scribbr AI Detector
Free student-facing AI detector with paragraph-level feedback and a paid premium GPT-4-capable tier.
AI Detectors from USD 19.95
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Undetectable.ai AI Detector
Free no-signup detector that aggregates results from several third-party AI detection models at once.
AI Detectors from USD 5.00
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Walter Writes AI Detector
AI detector bundled with Walter Writes' humanizer, scoring text on perplexity, burstiness and flow.
AI Detectors from USD 8.00
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Winston AI
AI text, image and deepfake detection with plagiarism checking and site certification for publishers.
AI Detectors from USD 10.00
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AI Humanizer
Rewrites text from ChatGPT, Claude and Gemini into human-style writing with a built-in detector.
AI Humanizers from USD 7.00
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AIHumanize.io
Rewrites AI text in several styles, locks keywords and citations, and runs AI detection checks.
AI Humanizers from USD 15.00
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Conch AI
Rewrite mode that humanizes AI drafts, bundled with an AI detector and study tools.
AI Humanizers from USD 30.00
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Grubby AI
Rewrites AI-generated text into human-style output with per-plan monthly word quotas.
AI Humanizers from USD 3.99
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Hastewire
Humanizes AI drafts and adds sentence-level AI detection, grammar checking and translation.
AI Humanizers from USD 5.00
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Humanize AI
Web tool that converts AI-generated text into human-style writing, with a free unlimited tier.
AI Humanizers from USD 12.00
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HumanizeAI.io
Rewrites AI-written text into human-style prose, with a private model on paid tiers.
AI Humanizers from USD 4.00
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Rewritify
Rewrites AI-generated text with several bypass modes and checks the result for AI markers.
AI Humanizers from USD 14.00
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Ryne AI
Humanizes AI text and adds an AI detector, essay writer and lecture note tools.
AI Humanizers from USD 19.99
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StealthWriter
Rewrites AI text with Ghost models, sentence-level alternatives and a built-in AI scanner.
AI Humanizers from USD 20.00
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Surfer AI Humanizer
Free web tool that rewrites AI-generated English text into human-style prose.
AI Humanizers from USD 49.00
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Twixify
Rephrases AI-generated text to match a user's own writing style and removes model watermarks.
AI Humanizers from USD 8.00
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Undetectable AI
Rewrites AI-generated text into human-style output and includes a built-in AI detector.
AI Humanizers from USD 9.99
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AI Undetect
Rewrites AI-generated content into human-style text and includes an AI detector.
Multilingual Humanizers from USD 5.00
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Grammarly
Writing assistant whose Pro tier rewrites full sentences, adjusts tone and humanizes AI text.
Paraphrasers & Rewriters from USD 12.00
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Hemingway Editor
Readability editor whose paid Plus tier adds AI sentence rewrites and tone adjustment.
Paraphrasers & Rewriters from USD 8.33
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iLoveNote (formerly EditPad)
Free online paraphrasing tool, rebranded from EditPad, allowing 1,000 words per rewrite.
Paraphrasers & Rewriters from USD 6.58
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Linguix
Grammar and style checker with paraphrasing, rewriting and tone suggestions in a browser extension.
Paraphrasers & Rewriters from USD 11.67
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Outwrite
Grammar and style tool whose Pro plan rewrites sentences to be shorter, longer or different.
Paraphrasers & Rewriters from USD 9.95
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Paraphraser.io
Online paraphrasing tool with five rewrite modes and a 600-word free limit per submission.
Paraphrasers & Rewriters from USD 4.55
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Prepostseo Paraphrasing Tool
Paraphrasing tool inside Prepostseo's SEO toolkit, sold as its own plan alongside a humanizer.
Paraphrasers & Rewriters from USD 6.75
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QuillBot
Paraphrasing suite with multiple rewrite modes, grammar checker, summarizer and AI humanizer.
Paraphrasers & Rewriters from USD 8.33
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Wordtune
AI rewriting assistant that suggests alternative phrasings, shortens or expands sentences inline.
Paraphrasers & Rewriters from USD 4.89
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DupliChecker
Free web-based plagiarism checker with paid search-and-word packages and API access.
Plagiarism & Originality Checkers from USD 9.99
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Grammarly Plagiarism Checker
Plagiarism detection built into Grammarly's writing assistant, included with Pro plans.
Plagiarism & Originality Checkers from USD 12.00
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Plagiarism Checker X
Desktop plagiarism and text-similarity software sold as a one-time perpetual licence.
Plagiarism & Originality Checkers from USD 39.95
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Plagiarism Detector
Online plagiarism checker with a free tier, paid word packages and a developer API.
Plagiarism & Originality Checkers from USD 20.00
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Quetext
DeepSearch plagiarism checker with AI detection, citation assistant and bulk uploads.
Plagiarism & Originality Checkers from USD 14.99
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Scribbr Plagiarism Checker
Per-document plagiarism check for students, priced by word count rather than subscription.
Plagiarism & Originality Checkers from USD 19.95
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HyperWrite
Personal AI writing assistant with hundreds of tools, including a dedicated AI Humanizer.
Writing Assistants with a Humanize Mode from USD 16.00
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TextCortex
AI writing assistant and browser copilot with a Humanize AI Text template and public API.
Writing Assistants with a Humanize Mode from USD 29.99
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GPTZero
AI text detector for educators and publishers with sentence-level highlighting and batch file scanning.
AI Detectors Freemium
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ZeroGPT
Free web AI text detector with highlighted sentences, plus paraphraser, summarizer and API plans.
AI Detectors Freemium
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Humbot
Humanizes AI text in three modes and checks the result with an integrated AI detector.
AI Humanizers Freemium
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Smodin
Text rewriter, AI writer, plagiarism checker and humanizer aimed at students and researchers.
Paraphrasers & Rewriters Freemium
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Spinbot
Free one-click article spinner and text rewriter that needs no registration.
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PaperTyper
Free student toolset with grammar checking, plagiarism checking and MLA/APA/Chicago citation generation.
Academic & Student Tools Freemium
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Samwell AI
Academic drafting tool that generates cited papers, checks plagiarism and offers a humanization feature.
Academic & Student Tools Freemium
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Bypass AI
AI detection remover with Simple, Standard and Enhanced modes plus a built-in multi-engine AI detector.
AI Detector Bypassers Freemium
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BypassGPT
Humanizer with Fast, Creative and Enhanced modes that rewrites AI text to pass AI detectors; includes a detector.
AI Detector Bypassers Freemium
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Smodin AI Detection Remover
Smodin module that rewrites AI-generated text to pass AI detectors, with AI Extra and Plagiarism modes.
AI Detector Bypassers Freemium
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UnAIMyText
Free humanizer allowing 500 words per input without an account, plus a Pro tier with a 2,000-word input cap.
AI Detector Bypassers Freemium
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JustDone AI Detector
AI detector in JustDone's student toolkit, publishing its own error rate and estimating Turnitin scores.
AI Detectors Freemium
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Smodin AI Content Detector
AI content detector inside Smodin's writing suite, covering 100+ languages with file upload support.
AI Detectors Freemium
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GPTZero API
AI detection API exposing the same document, sentence and paragraph scores used by the GPTZero web app.
Humanizer APIs Freemium
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Decopy AI Humanizer
AI text rewriter with localized sites in Spanish, Chinese and other languages and tone/length controls.
Multilingual Humanizers Freemium
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Humanizar Texto
Spanish-first AI text humanizer, free without registration, accepting up to 2,000 words per submission.
Multilingual Humanizers Freemium
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ZeroGPT AI Humanizer
Free no-signup humanizer offered in English, French, German, Spanish, Italian and Portuguese.
Listed New Free
Ahrefs Paraphrasing Tool
Free paraphrasing tool from Ahrefs with tone selection and a 2,048-character input limit.