Undetectable AI pricing: what each plan costs and what it buys

The pricing page sells words a month on a slider rather than named plans. Four positions were legible in the page as served on 9 November 2026, with a monthly and a yearly price for each.

The slider continues past 50,000 words to 380,000, and the page offers a business contact for bulk, non-expiring credits above that (Undetectable AI pricing page, read 9 November 2026). Every tier lists the same features: the humanizer, unlimited AI detection, an auto-typer tool, writing level matching and API compatibility, so the only thing the slider changes is the word pool.

Two arithmetic points follow from the table. The yearly rate is half the monthly rate at every position shown, which matches the "50 percent off" label beside the toggle. And the yearly rate is a single charge: $60.00, $114.00 or $189.00 taken at once, which the per-month figure on the card does not make obvious.

Only as a trial. The pricing page states that the free trial is limited to 250 words and that additional use requires a paid plan, read 9 November 2026. The trial is counted in total words, not days or requests, and it does not renew.

Trial size read 9 November 2026. For a reader who wants to see what the tool does to a full page before paying, the trial will not show it, and the best free AI humanizer list orders tools by how much text their free allowance accepts whole. Clever AI Humanizer accepts 3,000 words per request free with no sign-up, checked on 8 November 2026, which is the free comparison most people are looking for.

No plan called Pro appeared on the pricing page read on 9 November 2026. The vendor's help centre describes two kinds of paid subscription, Monthly and Yearly, and refers to both as the Premium plan, with the same feature list at every tier (Undetectable AI help centre, premium plans, updated 24 September 2026, read 9 November 2026). When people search for Undetectable AI Pro they usually mean the paid plan in general, and the answer is the slider table above.

The useful question is which slider position fits a month of work, because the word pool is the only thing that changes.

The pricing page read on 9 November 2026 showed two discounts and no coupon field. The first is the yearly toggle, labelled 50 percent off, which is the $9.99 to $5.00 move in the table above. The second is a "Custom Discount For Business" contact link for bulk credits, with no figure attached. No promo code box appeared in the page text, and this site lists no codes it has not seen applied at checkout on a stated date.

The page also carries a money-back guarantee with a narrow trigger: if output is flagged as not human, the vendor states it will refund the cost of that humanization, read 9 November 2026. That is a refund of a single rewrite's cost on a detector condition, not a trial period or a cooling-off window. No general refund term appeared on the pricing page or in the help centre's subscription category on the same date. A refund promise is a commercial term and not a measurement, and this site scores neither.

Cancellation runs through the vendor's support email rather than a button, according to the help centre: the article asks for the account email, the full name, the last four digits of the card and the subscription details, and states that remaining credits expire on cancellation (Undetectable AI help centre, how to cancel, updated 25 September 2026, read 9 November 2026). The same article offers a pause instead of a cancellation. The steps, timing and what the FTC says about cancelling subscriptions are in how to cancel Undetectable AI.

On a yearly plan, the charge has already been taken, so cancelling stops the next year rather than refunding this one. That is the trade behind the $5.00 figure: $60.00 at once, no monthly exit. A reader who expects to need the tool for two or three months pays less on the monthly toggle, $29.97 for three months against $60.00, by the page's own arithmetic read 9 November 2026.

The entry pool is small and the entry price is low. Walter Writes AI's Starter plan gives 30,000 words a month for $8 a month billed $96 yearly with a 750-word request cap, checked on 8 November 2026; StealthGPT's Pro plan gives 50,000 words a month for $29.99 monthly with a 1,000-word request cap, read on 9 November 2026; HIX Bypass's Standard plan gives 5,000 words a month for $14.99 monthly or $9.99 a month billed yearly, read on 9 November 2026. Undetectable AI's 10,000 words for $5.00 a month billed yearly sits between them on pool size and below all three on the yearly per-month figure, while its $9.99 monthly rate is the lowest monthly list price among the four.

Price is reported on this site and never scored. The published method weights meaning kept at 35 points of 100, errors added at 20, detector pass rate at 30, and limits and access at 15, and the words a month and words a request figures above feed only the last of those. No price is evidence that a rewrite keeps your meaning, and no detector score should be the only evidence in a misconduct case. Every price here was read on one day; the guides hub carries the date on each page so a reader can tell when a figure is due a re-check.