| GPTinf | GPTHuman.ai | |
|---|---|---|
| Starting price | $12/mo | $25/mo |
| Free tier | 200 words | 200 words |
| Bundled detector | No | Yes |
| Founded | 2023 | 2024 |
| Best for | Writers who want granular control over tone and which specific sentences get rewritten. | Users who want a built-in confidence score and don't mind paying a premium for it. |
Price: GPTinf is cheaper to start, at $12/mo vs $25/mo.
GPTinf: From $12/mo, scaling with monthly word volume.
GPTHuman.ai: Plans start at $25/mo — one of the pricier options in the category.
Free tier: GPTinf offers a more generous free tier (200 words).
If you just want to test either tool before paying, GPTinf's 200-word allowance gives you more room to evaluate quality.
Detection performance
GPTinf: Marketed as being trained directly against detector models rather than general paraphrasing, which independent testers cite as the reason its scores hold up on technical text.
GPTHuman.ai: One independent tester reported it bypassed every detector used in their test suite, the strongest single result among tools they reviewed.
AI detector included: GPTHuman.ai bundles a built-in detector; GPTinf does not.
Strengths at a glance
GPTinf
- Eight distinct rewriting modes (Academic, Formal, Informal, Creative, Simple, Standard, Expand, Shorten)
- Freeze-keyword feature protects technical terms and proper nouns from being altered
- Selective, sentence-level rephrase instead of forcing a full rewrite
GPTHuman.ai
- Live 'Stealth Score' shows bypass likelihood before you export
- 'Re-humanize' feature reruns the pass if the first score isn't high enough
- Bypassed every detector tested in one independent 2026 review
Our verdict
Choose GPTinf if: writers who want granular control over tone and which specific sentences get rewritten. Choose GPTHuman.ai if: users who want a built-in confidence score and don't mind paying a premium for it.