Compare · Undetectable AI

Undetectable AI alternatives

Undetectable AI is the tool most searchers mean by humanizer. This page states what it is, the one strength worth naming, why its pricing is hard to verify, and what a transparent alternative looks like.

What Undetectable AI is

Undetectable AI is a detector and a humanizer in one product: it rewrites pasted text in one of several modes and reports how its output scores against detectors. The free tier covers 250 words once.

Pricing, from the vendor page on 11 August 2026: 10,000 words at $9.99 a month, rising in word tiers to $42.50 for 50,000 words, with annual billing roughly halving the monthly figures and a Business tier above that. Third-party tables conflict with the vendor page, so numbers elsewhere should be read with caution.

The honest strength

One product that does both halves is a real convenience. Writers who want a detector and a rewrite do not juggle two tabs, and the interface is simple enough to use in one pass.

The free 250-word trial is enough to see whether the product is for you before paying.

Why the pricing is hard to verify

The vendor page was unreachable for part of our research window, and the third-party tables that list plans do not agree with the vendor page: one set quotes Starter, Business, and Unlimited tiers at $9.99, $24.99, and $49, which matches none of the vendor word tiers above.

This page prints only the vendor-page figures from 11 August 2026, and flags the disagreement so a reader knows why reviews and tables disagree.

Alternatives, including underslop

The list below names what each option does and what it costs. The pattern to notice: every product in this category sells similar output, and the differences that matter are the ones the category does not talk about.

What underslop adds: detection that names the tell instead of scoring the author, a rewrite that keeps provenance, a fact-guard, and an audit trail. And a price that is public: $0.10 per 1,000 words, with a free tier at 500 words per run.

The verdict

If you want a detector and a rewrite in one tab, and you can accept a price you cannot check, Undetectable AI is a reasonable place to start.

If you want to know what you pay per word, what changed in the rewrite, and what the draft still contains, the list below is the honest version of that search.