| GPTinf | Ryter Pro | |
|---|---|---|
| Starting price | $12/mo | $9.99/mo |
| Free tier | 200 words | 150 words |
| Bundled detector | No | Yes |
| Founded | 2023 | 2024 |
| Best for | Writers who want granular control over tone and which specific sentences get rewritten. | Users prioritizing the highest available bypass rate over brand familiarity. |
Price: Ryter Pro is cheaper to start, at $9.99/mo vs $12/mo.
GPTinf: From $12/mo, scaling with monthly word volume.
Ryter Pro: From $9.99/mo with a limited free trial.
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.
Ryter Pro: Named the outright top performer in at least one independent 2026 head-to-head test across four detectors.
AI detector included: Ryter Pro bundles a built-in detector; GPTinf does not.
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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
Ryter Pro
- Highest reported bypass rates in a multi-tool 2026 test (up to 97% on GPTZero, 94% on Turnitin-style checks)
- Genuine multilingual rewriting, not just translation-then-rewrite
- Fast processing speed even on long documents
Our verdict
Choose GPTinf if: writers who want granular control over tone and which specific sentences get rewritten. Choose Ryter Pro if: users prioritizing the highest available bypass rate over brand familiarity.