Compare · StealthGPT
StealthGPT alternative built on quality and proof
People searching for StealthGPT alternatives often want a humanizer that puts readable, meaning-preserving output first and wants to see what the rewrite actually changed. The priority is content that reads well to a human, not just a passing score.
StealthGPT is an established name in the humanizer category. Undetected.ai pursues the same goal with a mainstream, quality-led approach: our own AI-pattern gauge with the reasons behind its number, and prose that keeps your meaning so the humanized text is genuinely usable.
Meaning kept · Your own text rewritten · Saved to your history, delete any time
The short answer
If you want a StealthGPT alternative that puts readable output and visible proof first, Undetected.ai fits. It rewrites for natural prose while keeping your facts and argument, then shows our own AI-pattern score before and after, with the reasons behind it, so you can judge the result before you copy it, from $24 a month billed yearly for 100,000 words. StealthGPT is an established name; Undetected.ai leans on quality and on-screen confirmation rather than a bare pass claim.
Both tools are capable; the differences below are what actually decide it.
StealthGPT is an established humanizer; Undetected.ai emphasizes readable, meaning-preserving output with our own AI-pattern score and its reasons.
Prices we read ourselves
What StealthGPT costs, and what we cost
Read off each vendor's own pricing page on the date shown, not copied from a roundup. Where the yearly rate is cheaper we lead with it, because that is the number buyers compare.
| Undetected.ai | StealthGPT | |
|---|---|---|
| Cheapest paid plan | $24/mo billed yearly ($49 monthly) | $24.99/mo for Pro on the yearly tab, $29.99/mo month to month, or $6.99 a week |
| What that carries | 100,000 words/mo across 300 runs, 1,500 words a run | 50,000 words a month on Pro with 1,000 words per request; Max 200,000 a month and 2,000 per request at $41.99/mo yearly or $49.99 monthly |
| Try it before paying | Trial: 3 runs of up to 300 words, once. No free plan. | A $1 three-day trial for new users on the weekly and monthly tabs, which renews at the plan price; all purchases are non-refundable under its terms |
| Where they win | One pass over your own text, with our AI-pattern score and its reasons | Weekly billing for a one-off deadline, 2,000 words per request on Max, 100+ languages, an iOS app and MCP on every plan. Month to month its Pro plan costs less in dollars than our Starter |
StealthGPT pricing read October 14, 2026. All figures in USD. Promotional rates move constantly, so confirm on the vendor's own page before you buy. We build one of these tools.
Not sure any of them do what they claim? We published the ten-minute test for whether an AI humanizer actually works, which costs nothing and settles it on your own writing.
Side by side
Undetected.ai vs StealthGPT, honestly
A fair look at what each does well. Both are capable tools. Here is where they differ.
| What matters | Undetected.ai | StealthGPT |
|---|---|---|
| Our AI-pattern score | Animated red-to-green score shown in the tool | Returns humanized text with a result |
| The reasons behind the score | Shows our AI-pattern score and what earned it | Markets detector coverage |
| Meaning and readability | Keeps facts and argument, returns natural prose | Aims for output that reads naturally |
| What you see after the rewrite | Our own AI-pattern score before and after, with its reasons | Targets the major detectors |
| Try before you pay | Trial: 3 runs of up to 300 words, once. No free plan. Paid plans from $24 a month billed yearly for 100,000 words | A $1 three-day trial for new users, then the plan price |
| Best suited for | Writers wanting quality, readable output with proof | Users wanting an established humanizer |
Comparison reflects general, publicly understood positioning. Capabilities change, so check each product for the latest.
Every StealthGPT plan on its weekly, monthly and yearly tabs, what the $1 trial renews into and its refund terms are in our StealthGPT review. Already paying and leaving? The cancel steps, the no-refund rule and the one conditional money-back clause are in our StealthGPT cancel subscription and refund guide.
Why writers pick Undetected.ai
The humanizer that shows its work
Quality over a bare pass
Undetected.ai keeps your meaning and returns natural prose, so the humanized text reads well to a person and not only to a scanner.
Proof on screen
Our own AI-pattern score sits under the rewrite, before and after, with the reasons behind each number.
One pass, our own score
One rewrite works on the properties every detector measures, rather than chasing one tool at a time.
Good questions
StealthGPT vs Undetected.ai, answered
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Further reading: StealthGPT review: pricing on all three billing tabs, the $1 trial and refunds · Which AI detector is most accurate in 2026? · What AI detectors actually measure · Best AI humanizer in 2026, compared
Try Undetected.ai on your own text
Paste your own text and read the rewrite next to the original, with our AI-pattern score measured on both before you copy.
Meaning kept · Your own text rewritten · Saved to your history, delete any time