TEST environment —
revue_ia_test_en
English review generated from the UK SERP. The real listing is untouched.
All English test reviews
Undetectable AI
Undetectable AI is a web and mobile tool for detecting AI-generated text and rewriting it so it reads more naturally.
It also checks images, PDFs and audio, and it offers an AI humaniser, a grammar checker, a browser extension and an API. The free trial is limited to 250 words, then paid access starts from $9.99/month for 10K words on the monthly plan.
Read more Read less
- Publisher
- Undetectable AI
- Country
- United States
- Founded
- 2023
- Free plan
- No
- Free trial
- Yes, 3 days
- No card needed
- No
Undetectable AI in brief
What is it?
Undetectable AI analyses text the way a detector does, marking the parts most likely to be flagged. Its humaniser then rewrites those sections by changing sentence structure, widening vocabulary and adjusting tone, so the output reads naturally human. You feed it text, and it returns rewritten text after checking that output against the same detection models. The service also covers AI image, PDF and audio detection, plus paraphrasing and grammar checking.
Why?
It is built for the practical job of making AI-generated copy less likely to be flagged while keeping the meaning intact. It also helps you check whether a passage, image, PDF or audio file looks machine-made, which is useful when you need to review content before publishing or submitting it. Working together, the humaniser and detector do that job.
Who is it for?
Students, content writers and bloggers, marketers and SEO specialists, businesses and teams, and job seekers use it for different writing tasks. A job seeker can reshape application text, while a marketer can adjust copy for readability and search performance. For the reader who needs a browser-based AI humaniser with detection tools, the fit is direct.
Pros and cons
Pros
- AI Detector Checks text with a federated multi-detector check, so you can see which parts are likely to be flagged.
- AI Humanizer Rewrites flagged passages by varying sentence structure, enriching vocabulary, and adjusting tone so the result reads more naturally.
- AI Image Detector Identifies whether an image is AI-generated, which fits the same checking workflow as the text detector.
- Fake PDF Detector Extends detection to PDF files, which lets you screen document work in the same place.
- AI Audio Detector Adds audio checking alongside text, image and PDF detection.
- Chrome Extension Brings the detector and humaniser into the browser, which suits quick checks without switching tools.
Cons
- 250-word trial limit The free trial stops at 250 words, so longer document work moves to a paid plan quickly.
- Paid-plan activation required Additional usage after the trial requires a paid plan, which makes the free entry point short-lived.
- No card-free start The trial requires a bank card, so you do not reach the first check without payment details.
Pricing
Undetectable AI uses a trial model with named tiers that scale by monthly word allowance. The paid tiers increase the quota and add custom pricing at Business level.
| Tier | Price as of 2 September 2026 | Quota |
|---|---|---|
| 10K | $9.99 per month | 10,000 words per month |
| 20K | $19 per month | 20,000 words per month |
| 35K | $31 per month | 35,000 words per month |
| 50K | $42.50 per month | 50,000 words per month |
| Business | On quotation |
Official pricing for Undetectable AI · recorded on 2 September 2026
What the free plan allows
Undetectable AI has no free plan. It offers a three-day trial capped at 250 words, and that is where free access stops for this tool, before any monthly tier begins.
No bank card is listed for the trial, so you can test the service without entering payment details. Two hundred and fifty words are included. Once those 250 words are spent, further use moves you onto a paid plan.
Superhuman has no free tier: the sample limit is enough for a brief check of the workflow, but not for regular drafting. Short and fixed, the trial closes once the quota is reached. It is a sample, not ongoing access.
The paid tiers begin after that sample, so the free access works only as a test gate. You get a trial, then payment becomes necessary.
What Undetectable AI does
Undetectable AI analyses your text as a detector would, then rewrites the flagged passages with varied sentence patterns, a wider vocabulary and a more even tone. It spots the awkward bits. The tool rewrites them for you. Sentence patterns shift, vocabulary broadens and tone is adjusted.
On the trial side, the tool stops after 250 words across three days, so the first tier is for a quick check rather than longer drafting. Paid tiers then move by monthly word allowance: 10K, 20K, 35K and 50K, with Business set separately at custom pricing.
How to use Undetectable AI
Getting started
Undetectable AI starts in the browser, with no desktop install. You sign in, then open the text workflow and paste the passage you want checked or rewritten. The help centre sits at [help.undetectable.ai](https://help.undetectable.ai/en), so account questions and basic guidance are in one place.
Finding your way around the interface
On screen, the main flow is built around detection first and rewriting second. You move from one step to the next inside the same browser workflow.
Using it and managing projects
You upload or paste text, let the detector mark the risky passages, then run the humaniser on those sections. On the trial, the limit is 250 words, so a longer draft moves straight onto a paid tier.
Key features
Undetectable AI combines detection and rewriting in one workflow. The tiers are 10K, 20K, 35K, 50K and Business, with monthly and annual billing on the paid plans.
AI Detector
It flags likely detector hits and suits the free trial or any paid plan with detector access. Before you rewrite, you get a diagnosis.
AI Humanizer
Rewrites text with a more natural flow and a cleaner tone. It is available across the plan range.
AI Image Detector
Checks whether an image is likely to be AI-generated. It belongs to the product’s detection tools and sits alongside the text detector. The feature is part of the wider verification workflow.
Fake PDF Detector
Checks whether a PDF may have been AI-generated or manipulated. It extends the same detection approach to document files. Useful when the source arrives as a PDF rather than plain text.
AI Audio Detector
It applies the product’s detection logic to sound files. The output helps you screen clips before publication or review.
AI Job Applier
Supports job applications as one of the product’s task-oriented tools. It sits beside the writing and detection functions rather than replacing them. The feature is aimed at users handling application documents at scale.
AI Stealth Writer
Writes text with the aim of avoiding detector flags while keeping the output readable. It belongs to the same rewriting family as the humanizer. The feature is part of the broader content workflow.
AI Paraphraser
Rephrases existing text while keeping the meaning intact. It gives you a lighter rewrite than the humanizer. Useful when you need an alternative version without changing the subject matter.
Grammar Checker
Checks text for grammatical errors and surface-level language issues. It works as a separate editing step alongside the rewriting tools. The feature helps clean up content before publication.
Chrome Extension
Adds the service to the browser through a Chrome extension. It gives you access from the web rather than a desktop application. Useful when you want the tool close to your writing workflow.
50+ languages support
Supports more than 50 languages for detection and rewriting. The language coverage includes English, Spanish, German, French, Portuguese (Brazil), Arabic, Russian, Japanese, Indonesian, polish, Korean, Chinese, Turkish and Italian. That breadth matters if you work across markets.
Uses and professions
Undetectable AI is aimed at people who need to check whether text, images or PDFs will be flagged as machine-made, then rewrite text so it reads more naturally. Its public-facing uses also include a Chrome extension, job application support and a grammar check, so the same account can sit in content work and screening work. Students use it to check whether drafted work looks machine-written before submission. It is also used by content writers, marketers and SEO specialists when they need to reshape copy that has already been generated elsewhere.
Students
Students use the detector to see which parts of a draft are likely to be flagged, then use the humanizer to rewrite those passages before submitting work. It replaces a separate detector plus manual rewriting of the same text.
Professionals
Professionals use the detector, humanizer and grammar check together when they need cleaner text that still passes AI checks. It replaces switching between a detector, a rewriter and a separate proofing pass.
Content writers and bloggers
Content writers and bloggers use the humanizer to reshape generated copy and improve readability and search visibility. It replaces a manual rewrite that tries to vary structure, vocabulary and tone paragraph by paragraph.
Marketers and SEO specialists
Marketers and SEO specialists use the humanizer when they need content that reads less mechanical and is easier to publish. It replaces a separate pass for rewriting and search-oriented polishing.
Businesses and teams
Businesses and teams use the tool to screen copy and then rework it before it reaches clients or internal review. It replaces handing text between a detector and a rewriting step.
Job seekers
Job seekers use the AI job applier to prepare applications and keep supporting text from sounding machine-made. It replaces drafting each application note by hand from scratch.
Tips
Tips for effective use
Undetectable AI works best when you paste a clean draft rather than a rough outline. You get clearer rewrites if you separate long quotations, references and headings before running the text through the humaniser. On the three-day trial, the 250-word cap is enough for a short passage, not a whole document. Use the help centre at help.undetectable.ai when you need account steps or basic navigation.
Common mistakes to avoid
Mixed jargon and a flat result usually mean the input was already over-edited, so the humaniser has little structure left to vary. A trial limit reached too early means the 250-word cap has been spent, and further use moves to a paid plan. An error after login often points to using the wrong channel, since the web app, mobile apps and Chrome extension are separate access routes.
Models and rights on your creations
Undetectable AI uses ChatGPT, Gemini, Claude, Llama, Bard and Jasper AI behind its rewriting workflow. Over the three-day trial, access is capped at 250 words. That free access is therefore only useful for checking a short passage, not a full document.
Undetectable AI has no free tier: after the trial, the humaniser and detector work in the same loop, with the output checked against the same detection layer before it comes back. You do not get a separate model choice here. The tiers change the amount of text you can process, not the basic mechanism.
Copyright in the output remains with you, but the free trial does not stretch beyond those 250 words. Any longer piece moves to a paid plan once the cap is reached.
Access
Undetectable AI is reached in the browser, on iOS, on Android and through a Chrome extension, so the same account can move between web and mobile use without a desktop install. It responds in fourteen languages, which covers English and a wide multilingual working range. The access section below separates the device channels from the language support.
Undetectable AI opens on the web at undetectable.ai, so the main workflow stays in the browser. On mobile, the app is available for iPhone and Android, while the extension gives you direct access in Chrome. Its language list sits in a separate sub-section. The full set is handled separately.
Devices, apps and compatible systems
Undetectable AI is available on the web, on iOS, on Android and as a Chrome extension. It also exposes an API.
Available on
Access & integrations
Public APIYes
Available for developers.
Available languages
Undetectable AI supports fourteen languages.
English
Spanish
German
French
Portuguese
Arabic
Russian
Japanese
Indonesian
Polish
Korean
Chinese
Turkish
ItalianReview and ratings by Aikiwi
Overall score of Undetectable AI 4.2
Undetectable AI’s main strength is how it brings detection and rewriting together. It analyses text like a detector, flags the parts most likely to be caught, then reshapes them with altered sentence structure, broader vocabulary, and a different tone.
Undetectable AI suits students, professionals, content writers and bloggers, marketers and SEO specialists, businesses and teams, and job seekers. Its use cases cover academic writing, content marketing and SEO, business communication, social media and YouTube, and job applications.
Undetectable AI is worth trying if you want to test the workflow before moving to a paid plan. If you only need a short check or a sample humanisation pass, the free tier shows the core mechanism clearly enough to judge whether the pricing table suits your volume.
Detailed review of Undetectable AI
Design and Ergonomics 4.0
Undetectable AI publishes no description of interface layout, screen hierarchy, accessibility treatment, or desktop ergonomics. The published material centres on the product’s detection and rewriting workflow, not on how the interface is organised for first-time or regular use. That leaves the visual and navigational design unmeasured on public facts. For a user, the implication is straightforward: the service can be judged on its functions, but not on interface comfort or accessibility from the published record. If you care about a polished work surface, you have to treat the interface as an unknown and rely on your own inspection rather than on the site’s feature list.
Ease of Use 4.2
That gives the product a direct, rule-based path from input to output. For you, that means the tool suits quick drafting and revision work where the task is obvious from the start. The trial is limited to 250 words, so the first useful result is available only in a small sample before paid activation becomes necessary. The process is more guided than exploratory.
Features and Tools 4.6
Undetectable AI combines a detector, a humaniser, an image detector, a fake PDF detector, an audio detector, an AI job applier, a stealth writer, a paraphraser, a grammar checker, and a Chrome extension. That is a broad functional set for one product. For you, the range makes the tool useful beyond simple paraphrasing. It covers content checking, rewriting, image and document verification, and browser-based use, so it fits writing, SEO, and job-application workflows. The breadth is strongest for users who need several related functions in one place rather than a single-purpose detector.
Performance and Reliability 4.0
Undetectable AI publishes neither a status page, nor an incident history, nor an availability commitment. The public record therefore shows the product’s functions, but not the stability of the service behind them. For you, that means the service can be assessed on capability, not on published operating consistency. If your work depends on predictable availability, the lack of published service commitments leaves you relying on direct testing and live use rather than on formal operational evidence.
Innovation and Distinctiveness 4.5
That self-referential design is more specific than a standard paraphraser. The product also extends the same logic to text, images, PDFs, and audio, which broadens the mechanism beyond ordinary text rewriting. For you, the distinctive value lies in a workflow aimed at passing detectors rather than merely changing wording. That makes it relevant for users who need content to survive automated checks, especially in publishing, SEO, and application contexts. The approach is narrower than generic writing assistance, but more specialised in return.
Support and Resources 4.1
It also offers a Chrome extension page and a developer area, which gives the product a public support surface beyond a single contact form. The support setup is practical rather than elaborate. For you, that means there is enough official material to cover setup, extension use, and developer access without hunting through third-party pages. Users who prefer self-service help and a direct email channel will find the published support structure usable. It is lighter than a full community ecosystem, but it is not bare.
Value for Money 4.1
That pricing structure ties cost to usage volume rather than to a single flat bundle. For you, the value depends on how often you need detection and rewriting across several content types. The entry price is reachable, but the free access is tightly constrained, so the service is better suited to people who will use it regularly. If you only need occasional checks, the paid model asks more than a casual tool would.
Frequently asked questions
Can you use Undetectable AI for free?
Undetectable AI includes a 3-day trial, and the free trial is limited to 250 words. After that, paid plan activation is required for further use. The pricing model is trial-based, and the amounts are in the pricing table.
How much does Undetectable AI cost?
Undetectable AI uses a trial-based pricing model, with 10K, 20K, 35K, 50K and Business tiers. The amounts are in the pricing table. The trial lasts 3 days, and it is not available without a card.
Is there a promo code for Undetectable AI?
Undetectable AI has an affiliate programme and a referral programme.
Is Undetectable AI trustworthy?
Undetectable AI is built around detection and rewriting: it identifies likely flagged parts, then rewrites them and checks the output against the same detection models. It also offers an AI Detector, an AI Humanizer, an AI Image Detector, a Fake PDF Detector and an AI Audio Detector.
Does Undetectable AI work for Turnitin?
Undetectable AI is designed to bypass AI detectors and score as human, but Turnitin is not named in the facts. The tool also includes an AI Stealth Writer and an AI Humanizer, with support for English and many other languages.