| QuillBot Humanizer | WriteHuman AI | |
|---|---|---|
| Starting price | $8.33/mo | $8/mo |
| Free tier | 125 words | 100 words |
| Bundled detector | Yes | No |
| Founded | 2017 | 2023 |
| Best for | People who already pay for QuillBot's grammar/paraphrase suite and want a decent bonus feature, not a dedicated bypass tool. | Students who want an accessible entry point but should verify output with a second detector before submitting anything. |
Price: WriteHuman AI is cheaper to start, at $8/mo vs $8.33/mo.
QuillBot Humanizer: $8.33/mo billed annually, $19.95/mo monthly. Free tier: 125 words, 6 uses/day.
WriteHuman AI: From roughly $8/mo; 'Enhanced Model' available as a paid upgrade.
Free tier: QuillBot Humanizer offers a more generous free tier (125 words).
If you just want to test either tool before paying, QuillBot Humanizer's 125-word allowance gives you more room to evaluate quality.
Detection performance
QuillBot Humanizer: Consistently ranks behind dedicated humanizers on Turnitin and GPTZero in third-party comparisons because it leans on synonym substitution rather than deep sentence restructuring.
WriteHuman AI: One of the more heavily marketed student-focused tools, though third-party detector testing found inconsistent results even on the paid tier.
AI detector included: QuillBot Humanizer bundles a built-in detector; WriteHuman AI does not.
Strengths at a glance
QuillBot Humanizer
- Bundled AI detector, grammar checker, and paraphraser in one subscription
- Fast — results in under 5 seconds for short passages
- Color-coded change tracking so you can see exactly what was rewritten
WriteHuman AI
- Retry option lets you regenerate a rewrite if the first pass reads oddly
- Enhanced Model shows measurable improvement over the base tier
Our verdict
Choose QuillBot Humanizer if: people who already pay for quillbot's grammar/paraphrase suite and want a decent bonus feature, not a dedicated bypass tool. Choose WriteHuman AI if: students who want an accessible entry point but should verify output with a second detector before submitting anything.
Full QuillBot Humanizer review → · Full WriteHuman AI review →