Review · AI tools
StealthWriter review
AI humanizer with light, medium and aggressive rewrite levels and a sentence-level AI detector.
By the KeenVerdict research desk · Updated November 11, 2026
- Features (40%)
- 8.2
- Ease of use (30%)
- 8.5
- Value (30%)
- 8.4
StealthWriter stands out for its free tier. The free plan gives 10 humanizations and 10 AI scans a day with up to 1,000 words per input, which covers a lot of everyday editing without paying. Rewrites come at light, medium or aggressive levels, and you can click any sentence to choose an alternative, so you can keep the output close to your own voice. Deep Scan highlights sentences by color to show what still reads as machine-made. Paid plans start with Starter at $20 a month for 50 humanizations a day and 5,000 words per input, and they add the Ghost 5.2 Pro and legacy models; yearly billing saves 17 percent. StealthWriter says it does not store submitted text after processing or use it for training. The weaknesses are price and structure: $20 is a high entry point, and daily caps suit steady users more than people with occasional large batches.
Who it is for
Writers who want a generous free daily allowance and sentence-by-sentence alternatives.
Price
Free plan with 10 humanizations a day; Starter $20 per month.
Starter More room for everyday writing $20 USD / mo
Quoted from the vendor pricing page on November 11, 2026.
Key features
- Light, medium and aggressive rewrite levels
- Click any sentence to choose from alternative rewrites
- Deep Scan with color-coded sentence highlights
- Free plan with 10 humanizations a day at 1,000 words per input
- 5,000 words per input on paid plans
Strengths and weaknesses
- Strength: The most generous free daily allowance we found
- Strength: Sentence alternatives make fine-tuning easy
- Strength: Says it does not store text or use it for training
- Weakness: Paid plans start at $20 a month, above most rivals
- Weakness: Daily limits rather than monthly word pools
- Weakness: Pro models need a paid plan
Key facts
- Free option: Yes, 10 humanizations a day, 1,000 words per input
- Paid input limit: 5,000 words
- Yearly saving: 17%
Where it ranks
StealthWriter is No. 3 in our Best AI Humanizers verdict.
Alternatives we scored
- Grammarly9.0
- QuillBot8.7
- Wordtune8.4
- WriteHuman8.4
Visit stealthwriter.ai · Questions or corrections: editorial@keenverdict.com