| Grammarly AI Humanizer | WriteHuman AI | |
|---|---|---|
| Starting price | $12/mo | $8/mo |
| Free tier | 0 words | 100 words |
| Bundled detector | No | No |
| Founded | 2024 | 2023 |
| Best for | Professionals who want more natural-sounding AI-assisted drafts without a dedicated bypass-focused 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 $12/mo.
Grammarly AI Humanizer: Included in Grammarly Premium ($12/mo annual) and Business plans.
WriteHuman AI: From roughly $8/mo; 'Enhanced Model' available as a paid upgrade.
Free tier: WriteHuman AI offers a more generous free tier (100 words).
If you just want to test either tool before paying, WriteHuman AI's 100-word allowance gives you more room to evaluate quality.
Detection performance
Grammarly AI Humanizer: Grammarly is explicit that the feature is meant to improve natural tone rather than guarantee detector evasion, which sets it apart from bypass-first competitors.
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: Neither tool bundles a built-in detector — pair either with GPTZero or Originality.ai.
Strengths at a glance
Grammarly AI Humanizer
- Built into an app most professionals already have installed (browser, desktop, Docs)
- Focuses on clarity and flow rather than aggressive detection evasion
- Backed by Grammarly's long-standing grammar and tone engine
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 Grammarly AI Humanizer if: professionals who want more natural-sounding ai-assisted drafts without a dedicated bypass-focused tool. Choose WriteHuman AI if: students who want an accessible entry point but should verify output with a second detector before submitting anything.
Full Grammarly AI Humanizer review → · Full WriteHuman AI review →