Undetectable AI
9.5/10★ 3.5 (961)Undetectable AI: Detect AI, Humanize, & Improve Your Content
✓ Free trial · 250 words✓ Refund offeredPolicy published
Undetectable AI: Detect AI, Humanize, & Improve Your Content
Extracted from Undetectable AI's own site and policies — “Not published” means we looked and it isn't there.
Free trial
✓ Free trial · 250 words
Starting price
$9.99/mo
Lowest paid tier is 10K words/month at $9.99/mo; higher tiers scale up to 50K+ words/month. Free trial capped at 250 words.
Refund policy
✓ Refund offered
Money-back guarantee applies only if humanized content is flagged as AI-generated (not human) by a detector.
Privacy & your data
Policy published
Does not process sensitive personal information; may receive data from public databases/marketing partners; shares info with third parties in specific
Support
Company
Not stated
Best for: Students, writers, and content creators who need to bypass AI detectors and humanize AI-generated text
Standout: Rated #1 AI detector by Forbes, with a refund guarantee if humanized output is still flagged as AI-generated
Top-scored alternatives in its category.
| Tool · TrustScore | Free trial | From | Refund | Privacy | |
|---|---|---|---|---|---|
| ✓ Free trial · 250 words | $9.99/mo | ✓ Refund offered | Policy published | Compare → | |
| ✓ Free trial | — | ✓ 30 days | ⚠ Not published | Compare → | |
| ✓ Free trial | $19/mo | ✓ 90 days | Policy published | Compare → | |
| ✓ Free trial | — | ✓ Money-back guarantee | Policy published | Compare → | |
| ✓ Free trial · 5 days | — | ✓ 30 days | ⚠ Not published | Compare → |
Our 5-point vetting, with evidence quotes from their own pages.
✓Money-back guarantee verified
✓Free trial confirmed
✓Reachable human support
✓No fine-print return traps
✓No unrealistic marketing claims
Vetted 2026-07-17 · How we compare →