Free AI detectors12 AI tools for essays, articles, documents and more
All the free AI detectors in one list, each with a free plan on its own pricing page. The complete list of AI tools is on the homepage. The full list, free or paid, is on the AI detectors page.
- Submit your free AI detectorRun one? Send it in and I’ll add it to the list and queue it for a hands-on test.Submit it →
AI Detectoraidetector.comDetects AI-generated text from ChatGPT, GPT-4, Claude, Gemini and other models.Listed in 1 list
AI or Notaiornot.comDetects AI-generated text, images, music and video.Listed in 3 lists
AI Writing Checkaiwritingcheck.orgFree service from Quill.org and CommonLit.org for educators to check if student writing is AI.Listed in 1 list
Clever AI Detectorcleverhumanizer.aiEstimates how likely a text was written by AI; also humanizes AI text.Listed in 2 lists
Decopy AI Detectordecopy.aiAI writing tool with AI detection, humanization and summarization for academic writing.
Grammarlygrammarly.comAI writing help and text generation in any app or website.
Quetextquetext.comPlagiarism checker and AI content detector that searches billions of sources.Listed in 4 lists
Saplingsapling.aiLanguage model toolkit for grammar checking, autocomplete, paraphrasing and AI detection.Listed in 4 lists
Solvelysolvely.aiAI study tool for homework help, notes, flashcards, quizzes and exam preparation.Listed in 2 lists
Trickmenottrickmenot.aiDetects AI-written text and humanizes content.Listed in 1 list
WriteHumanwritehuman.aiHumanizes AI text and includes an AI content detector.Listed in 2 lists
ZeroGPTzerogpt.comDetects text written by ChatGPT and other AI models.Listed in 4 lists
Other free AI writing tools
Still looking? Browse 158 free AI writing tools across 12 lists: detectors, humanizers, story generators and more.
- Free AI humanizersTools that rewrite AI-written text so it reads as human: change the wording, vary sentence length, remove stock phrases and keep the meaning.20 tools
- Free AI story generatorsTools that write stories: a short story from a prompt, a plot outline, characters, a chapter continued from your text and a story for children.9 tools
- Free AI translatorsTools that translate with AI: text, documents, web pages, speech and images with text, in many languages while keeping the tone.13 tools
- Free AI writing assistantsAssistants that write and edit with you: drafts, rewrites, grammar and tone, long-form work such as books and reports, emails and posts.57 tools
- Free AI email writersTools that write emails: draft a reply, write a cold email, shorten a long message, change the tone and add a subject line.20 tools
- Free AI summarizersTools that condense what you give them: summarise an article, PDF, web page or video and pull out the key points.10 tools
- Free AI transcription toolsTools that turn speech into text: transcribe a recording, label who spoke, add timestamps and work in several languages.23 tools
- Free AI grammar checkersTools that check writing: find spelling and grammar errors, fix punctuation, suggest clearer wording and adjust tone.14 tools
- Free AI book writersTools that help write a whole book: plan chapters, draft chapters, keep characters and facts consistent and edit the manuscript.9 tools
- Free AI script generatorsTools that write scripts: video scripts, YouTube scripts, ad scripts, short film scenes and dialogue, with a hook, scenes and spoken lines.8 tools
- Free AI name generatorsTools that suggest names from a short brief: names for characters, babies, pets, games, usernames and fantasy places in a chosen style.6 tools
AI statistics, live monitors and how I test
- AI statisticsVisits, searches and demand for every category, monthly to October 2026.
- Live monitorsUptime, page speed, security and prices of the tested tools, checked every day.
- CheckersThe tools used during every review, explained one by one.
- Data sourcesWhere the monthly statistics come from and how they are read.
- How I testOne written procedure per category, the same scoring for every tool in it.
- Submit your AI toolNot on the list, or ready to be tested? Send it in for the next pull.
Free AI detectors: questions people ask
What is a free AI detector?
Tools that tell AI-written text from human text: score a document, give a percentage, highlight the sentences they doubt and scan whole files. On this page every tool also has a plan that costs nothing for as long as you like, read from its own pricing page.
How many AI detectors have a free plan?
12 of the 27 AI detectors RankDude lists, as of 1 November 2026. The full list, free or paid, is on the AI detectors page.
What does the free plan usually limit?
Credits, outputs or projects per month, a watermark, lower resolution or fewer seats. The limits differ by tool; the pricing page each status was read from says exactly what the free plan includes.
Is this a ranking of free AI detectors?
No. The list follows the site's one order: tools I have tested first, then the rest by how well known they are. Only a tested tool carries a grade.
Written by Miles Foster, Owner and tester, RankDude.
All free AI writing tools