| StealthGPT | WriteHuman AI | |
|---|---|---|
| Starting price | $14.99/mo | $8/mo |
| Free tier | 0 words | 100 words |
| Bundled detector | No | No |
| Founded | 2023 | 2023 |
| Best for | Long-form academic or research writing where sentence-level restructuring matters more than speed. | 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 $14.99/mo.
StealthGPT: Plans from $14.99/mo; per-word bundles available for one-off use.
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
StealthGPT: Positioned and marketed specifically around Turnitin's originality algorithm rather than general-purpose detectors.
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
StealthGPT
- Generates and rewrites in one pass, so you can skip a separate AI writer
- Aggressive sentence-level restructuring rather than word substitution
- No word cap on paid plans — good for full-length papers
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 StealthGPT if: long-form academic or research writing where sentence-level restructuring matters more than speed. Choose WriteHuman AI if: students who want an accessible entry point but should verify output with a second detector before submitting anything.