Undetectable AI
AI Writing
Undetectable AI deal: Free trial (250 words)
AI humanizer plus a built-in detector that rewrites machine-written text to read more naturally and checks how it scores against popular AI detectors.
- Humanizer and detector in one
- Readability and style controls
- Strong multilingual support
- Chrome extension and API
How Undetectable AI scored 56/100
6 weighted criteria, each scored out of 10 and published with its reasoning. Featured placements never move a score.
Deal Strength
3.0 /10The free trial covers just 250 words — enough to watch the humanizer work on a paragraph, not to test it on real assignments. There's no coupon or verified price cut, so the link saves you nothing.
Value for Money
5.0 /10Plans start at $10/month for 10,000 words, in line with rivals like Humbot and StealthGPT. That's fair for occasional rewriting, but check the cost per word on the larger budgets if you plan to run volume through it.
Capability
8.0 /10The humanizer ships with a bundled multi-engine AI detector, a Chrome extension, an API, multilingual support and style controls. Rewriting and re-testing in a single loop is the standout — you don't need a second tool to check the result.
Time to Value
8.0 /10The workflow is paste, humanize, then check against the built-in detector, so you get a usable result minutes after signing up. The free trial means you can judge output quality before entering payment details.
Trust & Reliability
5.0 /10Output quality and detector bypass are both variable — results shift noticeably between runs, so you'll want to check every piece before using it. Undetectable AI publishes no uptime SLA and no review counts, so there's little independent reliability signal.
Flexibility & Exit
5.0 /10Plans are sold as monthly word budgets, with annual billing available at a lower rate. There's no published cancellation policy or export path for your saved text, so assume standard terms and basic export.
Free trial (250 words)
Affiliate link — same price for you, and it never moves the score.
- Humanizer and detector in one
- Readability and style controls
- Strong multilingual support
- Chrome extension and API
About Undetectable AI
Quick answer
Undetectable AI is an AI text humanizer paired with a multi-engine AI detector. You paste AI-written text, pick a readability and writing style, and it rewrites the copy to sound more natural while showing how the result scores against detectors like GPTZero, Originality.ai and Copyleaks. There is a 250-word free trial; paid plans are word-budget tiers starting around $10/mo (cheaper billed annually).
What is Undetectable AI?
Undetectable AI is a web app that does two related jobs. First, its humanizer rewrites AI-generated text so it reads more like natural human writing, smoothing out the repetitive phrasing and predictable sentence rhythm that large language models tend to produce. Second, it bundles an AI-content detector that runs your text through several popular detection engines at once, so you can see an aggregate read on how machine-written the output looks before you publish.
You paste up to a few thousand characters per run, choose a readability level (broadly a more-readable versus more-human trade-off) and a writing style such as essay, marketing, business or general, then humanize. Beyond the core editor there is a Chrome extension that humanizes text inline on sites like Gmail, Google Docs, Notion and LinkedIn, plus an API for teams that want to wire humanization or detection into their own apps. It supports 50+ languages, which makes it especially appealing to non-native English writers polishing AI drafts.
Key features
AI humanizer
Rewrites AI-generated text into more natural prose, with readability levels and writing styles so you can match the tone to essays, marketing copy or business writing.
Bundled AI detector
Checks your text against several widely used detection engines at once and reports an aggregate AI-likelihood read, so you rewrite and re-test in one place.
Multilingual support
Works across 50+ languages, which is useful for non-native English speakers cleaning up AI drafts or localizing content.
Chrome extension
Humanizes text directly inside the sites you already write in, including Gmail, Google Docs, Notion and LinkedIn, without copy-pasting into a separate tab.
API access
Programmatic humanizer and detector endpoints for developers who want to build the capability into their own workflows or products.
Writing styles and modes
Style presets and readability controls let you trade raw detector-bypass for cleaner readability depending on the job.
Undetectable AI pricing explained
Undetectable AI sells word budgets rather than seats. A free trial gives you a small allowance (around 250 words) to test humanization and detection before committing. Paid plans are tiered by monthly word volume, and at the time of writing the entry plan covers roughly 10,000 words a month, with larger tiers for 20,000 and 35,000 words; annual billing roughly halves the effective monthly rate. Business and bulk buyers can get custom, non-expiring word credits. Pricing and word allowances change, so confirm the current tiers and limits at signup.
Undetectable AI vs Humbot vs StealthGPT vs QuillBot
| Tool | Best for | Pricing | Standout |
|---|---|---|---|
| Undetectable AI | Humanizing AI drafts with a built-in detector | Free trial, then word-budget plans (~$10/mo+) | Humanizer plus multi-engine detector in one tool |
| Humbot | Quick, low-cost humanizing | Free quota, then word-budget plans | Simple, fast rewrites focused purely on bypass |
| StealthGPT | Volume rewriting and generation | Subscription word tiers | Built around evading detection at scale |
| QuillBot | General paraphrasing and grammar | Free tier, Premium ~$10–20/mo | All-purpose paraphraser and grammar checker, not detector-focused |
✓ Use it if you
- Want AI drafts to read more naturally for marketing, blogs or email
- Write in a non-native language and want cleaner English output
- Like seeing a detector score in the same place you rewrite
- Want to test on the free trial before paying
✗ Skip it if you
- Plan to disguise AI authorship in graded or academic work
- Need guaranteed detector bypass — no tool can promise that
- Already own a strong paraphraser like QuillBot for general editing
- Write low volumes that the free tools cover
Is Undetectable AI worth it?
For polishing AI-assisted marketing copy, blog drafts or non-native English writing, Undetectable AI earns its place: the humanizer noticeably softens robotic phrasing, and having a multi-engine detector in the same window tightens the rewrite-and-check loop. The honest caveats are real, though. Output quality and detector results vary by content type and length, longer passages can pick up awkward phrasing, and no humanizer can guarantee a piece will pass any given detector. More importantly, using a tool like this to pass off AI work as your own in academic or graded settings is an integrity risk that sits entirely with you — many institutions explicitly prohibit it. Treat it as an editing and tone-tuning aid for content you are allowed to publish, lean on the free trial first, and our verdict is a qualified wait-and-test rather than an unconditional buy.
What's included
- AI humanizer with readability levels
- Writing-style presets (essay, marketing, business, general)
- Built-in multi-engine AI detector
- 50+ language support
- Chrome extension for inline humanizing
- Humanizer and detector API
- Aggregate AI-likelihood scoring
- Bulk, non-expiring word credits for teams
Undetectable AI pricing
Vendor's published rates at the time we checked — always confirm at checkout.
| Plan | Price |
|---|---|
| Free trial | $0 |
| 10K words/mo | $10/mo |
| 20K words/mo | $19/mo |
| 35K words/mo | $31/mo |
How to claim it
4 steps. The last one is the part most people skip.
- 1
Open Undetectable AI through the link on this page
It carries our referral tag. The price you pay is identical either way, and it never changes the score on this page.
- 2
Pick the plan that matches your usage
This offer applies automatically through the link — there is no code to enter.
- 3
Confirm the discount before you pay
The order summary should show the reduced amount. If it does not, stop and tell us — we re-test listings that stop working.
- 4
Check what happens at renewal
Note the renewal date and the rate it reverts to, so the second invoice is not a surprise. Annual plans are usually cheaper per month but harder to exit.
Where Undetectable AI wins and loses
What works
- Humanizer and detector in one
- Readability and style controls
- Strong multilingual support
- Chrome extension and API
- Free trial to test first
What doesn't
- Results vary by detector and length
- Occasional awkward phrasing
- Academic-integrity risk
- Word-budget caps
The bottom line
A capable AI humanizer with bundled detector and quick trial, but deal strength is limited and reliability evidence is thin.
No. It reduces AI-detection scores and shows results across several engines, but no humanizer can guarantee a piece passes any specific detector, and outcomes vary by content type and length.
There is a free trial with a small word allowance (around 250 words) so you can test the humanizer and detector before paying. Continued use requires a paid plan.
Plans are tiered by monthly word budget, starting around $10/mo for the entry tier (roughly half that effective rate billed annually), with larger word tiers and custom bulk credits. Confirm current pricing at signup.
For content you are allowed to publish — marketing, blogs, your own writing — it is a legitimate editing aid. Using it to pass off AI work as your own in academic or graded settings violates many institutions' policies and is an integrity risk you take on.
Yes. The humanizer supports 50+ languages, which makes it popular with non-native English speakers refining AI-generated drafts.
Yes. A Chrome extension humanizes text inline on common sites like Gmail, Google Docs and Notion, and an API lets developers integrate the humanizer and detector into their own products.
