Comparison
ESL Humanizer vs QuillBot: which is better for non-native English writers?
By ESL Humanizer editorial team · Prices and limits checked September 2026
Short answer
QuillBot is a strong, cheap all-rounder for paraphrasing and summarizing. For a non-native writer who wants their own text to sound natural without being pushed into vocabulary they don't use, ESL Humanizer is the more focused choice.
QuillBot is a paraphrasing suite with several rewrite modes, a grammar checker, a summarizer and a humanizer. 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; QuillBot’s details come from its own website and can change — check before you pay.
At a glance
| ESL Humanizer | QuillBot | |
|---|---|---|
| Type | ESL writing editor | Paraphraser |
| Built for | Polishing English you wrote yourself | General paraphrasing, grammar and summarizing |
| On AI detectors | Shows an estimate, never a guarantee | The humanizer is one tool in a larger writing suite |
| Shows each change | Yes — word by word, plus a meaning score | Yes — changed words are highlighted in the paraphraser |
| Free option | 1 rewrite a day (2 when signed in), up to 1,500 characters (~250 words) each | Paraphraser up to 125 words per run |
| Paid from | $24.95/month or $89 for 4 months | $19.95/month or $8.33/month billed yearly |
What QuillBot does well
- Many modes (standard, fluency, formal, creative) and a synonym slider
- Highlights changed words, so edits are visible
- Good value on the yearly plan
Where QuillBot falls short for non-native writers
- The free paraphraser stops at 125 words per run
- Some modes push vocabulary above your level, which can make an essay sound unlike you
- It paraphrases sentence by sentence rather than checking that the whole paragraph's meaning survived
What ESL Humanizer does differently
- ESL Humanizer keeps your level of English — it fixes what sounds non-native instead of swapping in rarer synonyms.
- A meaning score on every rewrite warns you if anything drifted.
- A free rewrite takes up to about 250 words, double QuillBot's free paraphraser limit.
Which should you choose?
Choose QuillBot if…
- You need a summarizer, citation tool and paraphraser in one subscription
- You like choosing between many rewrite styles
Choose ESL Humanizer if…
- You want natural English at your own level, not a thesaurus rewrite
- You're a non-native writer worried about AI-detector false positives on work you wrote
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 QuillBot good for non-native English speakers?
It's useful for rephrasing and checking grammar. The main risk is that its stronger modes replace your words with less common ones, so the result may not sound like you. Compare the output with your original before submitting.
Is there a free QuillBot alternative?
Several tools have free tiers: LanguageTool checks up to 2,000 characters for free, Wordtune gives 10 free rewrites a day, and ESL Humanizer rewrites up to about 250 words of your own writing for free.