Comparison
ESL Humanizer vs StealthGPT: which is better for non-native English writers?
By ESL Humanizer editorial team · Prices and limits checked September 2026
Short answer
StealthGPT is built to generate and hide AI text. If you wrote your own work, a tool whose main job is disguising AI is a risky thing to explain. ESL Humanizer edits your writing and shows every change instead.
StealthGPT is an AI writer and rewriter whose main pitch is “undetectable” AI text. ESL Humanizer rewrites English that non-native speakers wrote themselves so it reads naturally, without changing the meaning. ESL Humanizer is our product, so we’ve kept its row to verifiable facts; StealthGPT’s details come from its own website and can change — check before you pay.
At a glance
| ESL Humanizer | StealthGPT | |
|---|---|---|
| Type | ESL writing editor | “Undetectable” AI humanizer |
| Built for | Polishing English you wrote yourself | Generating and rewriting “undetectable” AI text |
| On AI detectors | Shows an estimate, never a guarantee | Undetectability is the core pitch |
| Shows each change | Yes — word by word, plus a meaning score | Not advertised |
| Free option | 1 rewrite a day (2 when signed in), up to 1,500 characters (~250 words) each | Very limited free use |
| Paid from | $24.95/month or $89 for 4 months | Several tiers — see its pricing page |
What StealthGPT does well
- Can generate as well as rewrite
- Several paid tiers
- Fast output
Where StealthGPT falls short for non-native writers
- Its purpose is hiding AI use, which conflicts with most academic policies
- Change tracking isn't advertised
- No detector outcome can be guaranteed
What ESL Humanizer does differently
- ESL Humanizer doesn't generate content — it only edits what you wrote.
- Every change is visible and the meaning is scored.
- Detection is shown as an honest estimate, not a promise.
Tools built to disguise AI text and tools that edit your own writing solve different problems. Submitting AI-written work as your own breaks most academic integrity policies whatever you use afterwards — see where the line is.
Which should you choose?
Choose StealthGPT if…
- You're producing AI-generated content where detection matters and policies allow it
Choose ESL Humanizer if…
- The text is your own work
- You want to learn from the edits, not hide them
A note on AI detectors
No tool can guarantee how an AI detector will score your text. In a peer-reviewed Stanford study, seven detectors labeled 61% of human-written TOEFL essays as AI-generated on average, and independent tests have found detectors disagree with one another. Natural English you wrote — plus drafts that show your process — is the most reliable protection. Read more about why detectors flag ESL writing.
Wrote it yourself? Make it sound natural.
Paste a paragraph. ESL Humanizer fixes non-native phrasing, keeps your meaning and highlights every change — free for up to ~250 words.
Quick answers
Is StealthGPT safe to use for school?
Using any tool to disguise AI-written work as your own breaks most academic integrity policies. If you wrote the work, you don't need to hide anything — focus on making the English natural and keep your drafts.