| StealthGPT | Ryter Pro | |
|---|---|---|
| Starting price | $14.99/mo | $9.99/mo |
| Free tier | 0 words | 150 words |
| Bundled detector | No | Yes |
| Founded | 2023 | 2024 |
| Best for | Long-form academic or research writing where sentence-level restructuring matters more than speed. | Users prioritizing the highest available bypass rate over brand familiarity. |
Price: Ryter Pro is cheaper to start, at $9.99/mo vs $14.99/mo.
StealthGPT: Plans from $14.99/mo; per-word bundles available for one-off use.
Ryter Pro: From $9.99/mo with a limited free trial.
Free tier: Ryter Pro offers a more generous free tier (150 words).
If you just want to test either tool before paying, Ryter Pro's 150-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.
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; StealthGPT does not.
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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
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 StealthGPT if: long-form academic or research writing where sentence-level restructuring matters more than speed. Choose Ryter Pro if: users prioritizing the highest available bypass rate over brand familiarity.