Rewords, fixes grammar and summarises text, with an AI checker and humaniser built in.
Writing & Translation
Undetectable AI
Rewrites AI-written text so it reads more human and is less likely to get flagged.
3.6our rating
FreemiumFrom $0Works with Claude Code
Quick take
- Rewrites AI text to sound more human, and checks it against popular detectors.
- Plans start at $9.99 a month for 10,000 words, or $5 a month billed yearly. The free trial is only 250 words.
- Results vary. Some rewrites read well, others come out clunky and need fixing.
- Detectors and AI watermarks keep changing, so no rewrite is guaranteed to pass.
- Using it to pass off AI work as your own at school or for a client who banned AI can get you in trouble.
What is Undetectable AI?
Undetectable AI rewrites text written by ChatGPT, Claude or other AI so it reads more like a person wrote it, and so AI detectors are less likely to flag it. Paste in your text, pick a reading level and purpose, and it gives you a rewritten version. It also has its own AI detector that shows how several popular detectors are likely to score your text.
It has grown into a suite of tools, including a paraphraser, an essay writer, an AI image and video detector and an API. Marketers use it to make AI drafts sound less robotic, and it offers a refund on any humanised text that gets flagged.
The catch: no humaniser can promise your text will pass. Detectors keep changing, rewritten text can come out awkward or change your meaning, and some AI tools now hide watermarks in their word choices that a rewrite may not fully remove. Using it to hand in AI work as your own at school, or where a client has banned AI, can break the rules. Read every output before you use it.
Who's using it, and who it's for
- Content marketers
- Bloggers
- Freelance writers
- SEO agencies
- Students
Marketers and writers who use AI for first drafts and want them to sound less robotic.
Key features
AI humaniser
Rewrites AI-written text to sound more natural, at the reading level and purpose you pick.
AI detector
Estimates how several popular detectors would score your text.
Human typer
Types text into a document at a human pace, included on all paid plans.
Image and video detectors
Check whether an image, video or voice recording was made with AI.
API
Humanise text in bulk from your own tools.
How we rate it
3.6 / 5
Our rating
From using the tool ourselves. The average of the five scores.
- Ease of use
- 4.0
- Features
- 3.5
- Output quality
- 3.0
- Value for money
- 3.5
- Speed & reliability
- 4.0
How quickly someone non-technical gets value from it.
How completely it covers its own job, and how well the pieces fit together.
How good the results are before you fix them.
What you get for the price, including the free plan.
How fast it is and how often it falls over.
Undetectable AI pricing
Free
$0
Testing one short piece.
- AI detector
- Humaniser trial up to 250 words
10K words
$9.99/mo, or $5/mo billed yearly ($60)
Occasional use.
- 10,000 words a month
- Unlimited AI detection
- API access
- Human typer
- Our pick
20K words
$19/mo, or $9.50/mo billed yearly ($114)
Regular blog content.
- 20,000 words a month
- Everything in 10K
Larger plans
From $31/mo, or $15.75/mo billed yearly
Agencies and high volume.
- 35,000 to 380,000 words a month
- Business plans with credits that don't expire
Which plan should you pick?
Test the free 250 words on your own writing first. If the output works for you, a small yearly plan is cheap. Word credits reset monthly, so don't buy more than you use.
Prices in USD unless noted, checked 3 November 2026. Vendors change plans often, so confirm on their site before you buy.
Best use cases
Ways Undetectable AI can slot into your week.
- 1
Make an AI draft sound like you
Run a ChatGPT blog draft through it, then edit the result into your own voice.
- 2
Check before you publish
Use the detector to see whether a piece reads as AI before it goes on your site.
- 3
Bulk rewrite product copy
Use the API to rewrite large batches of AI-written descriptions.
How it fits your tech stack
It sits after your AI writer and before you publish. Often a better route is to ask Claude to write in your voice from the start, or to edit the draft yourself.
Connects to
Pros and cons
Pros
- Simple: paste, pick a level, rewrite
- Built-in detector shows how text might score
- Cheap on yearly plans
- API for bulk rewriting
- Refund on humanised text that gets flagged
Cons
- No guarantee text will pass detectors
- Rewrites can read awkwardly or change your meaning
- Using it to hide AI use can break school or client rules
- Free trial is only 250 words
- Its marketing promises more than any humaniser can deliver
Undetectable AI alternatives
The closest alternatives to Undetectable AI in the library, best rated first.
Best for quick translations of emails and messages
Compare with Undetectable AI
Grammarly
4.3
Best for proofreading emails and documents as you type
Compare with Undetectable AIBest for making website and blog copy easier to read
Compare with Undetectable AI
DeepL
4.2
Best for Translating Word, PowerPoint and PDF files with layout kept
Compare with Undetectable AI
Why it made the list
It's the best-known AI humaniser, used by over 20 million people, and it's the tool most people mean when they talk about getting past AI detectors.
Undetectable AI FAQ
How much does Undetectable AI cost?
There's a free plan, and paid plans start at $0. Prices checked 3 November 2026 against Undetectable AI's pricing page.
Is Undetectable AI free?
Yes, Undetectable AI has a free option. Test the free 250 words on your own writing first. If the output works for you, a small yearly plan is cheap. Word credits reset monthly, so don't buy more than you use.
What is Undetectable AI best for?
Undetectable AI is best for Making AI drafts sound less robotic, seeing how detectors might score your text and rewriting at a set reading level. Marketers and writers who use AI for first drafts and want them to sound less robotic.
What are the best Undetectable AI alternatives?
The closest alternatives are Google Translate, Grammarly, Hemingway Editor and DeepL. Google Translate is best for quick translations of emails and messages.
More tools in Writing & Translation
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