Plans and prices
| Plan | Price | Includes |
|---|---|---|
| Plan 1 | 5.00 USD / month | 10K words/month, billed annually at 60.00 USD; 9.99 USD monthly before 50% discount; includes AI detecting and humanizer features |
| Plan 2 | 9.50 USD / month | 20K words/month, billed annually at 114.00 USD; 19.00 USD monthly before discount |
| Plan 3 | 15.75 USD / month | 35K words/month, billed annually at 189.00 USD; 31.00 USD monthly before discount |
| Plan 4 | 21.25 USD / month | 50K words/month; 42.50 USD monthly before discount; includes all features from other plans; 6 months free, cancel anytime |
Prices copied from Undetectable AI pricing, checked October 12, 2026. Currency as shown by the vendor; taxes may apply.
Is there a free plan?
There is a free trial. Free trial limited to 250 words; additional usage requires a paid plan.
Compared with alternatives
| Tool | Price from | Free plan | Category |
|---|---|---|---|
 Originality.ai | 12.95 USD/mo | yes | AI detectors |
 Copyleaks | 13.99 USD/mo | trial | AI detectors |
 AI or Not | 5 USD/mo | yes | AI detectors |
 Winston AI | 9 USD/mo | trial | AI detectors |
FAQ
How much is Undetectable AI per month?
The cheapest paid plan is 5.00 USD/mo.
Does Undetectable AI have a free plan?
There is a free trial. Free trial limited to 250 words; additional usage requires a paid plan.