Humbot vs Undetectable AI

For a single essay, Undetectable AI, because it states no request cap; for a month of them, the answer turns on length. Undetectable AI's entry plan is 10,000 words a month with no per-request cap, read 9 November 2026, so a 1,500-word essay goes through whole and six of them fill the month with 1,000 words to spare. Humbot's Basic plan caps a request at 500 words and the month at 3,000 Basic words, read 9 November 2026, so the same essay is three requests and two of them fill the month. Humbot's Pro plan, 30,000 Basic words at 1,200 a request, is the tier that competes with Undetectable AI on volume, and its price was not in the page as served.

Both read 9 November 2026. The Humbot pool is also shared across the suite's other tools, by the vendor's own note on the page, so a plagiarism check or a translation on the same day draws from the same 3,000. Price is reported on this site and never scored.

Humbot's plan tiles carry two allowances each. Basic plans carry 3,000 Basic words and 1,000 Advanced words a month, Pro 30,000 and 5,000, Unlimited no cap and 10,000, read 9 November 2026. The same page names Quick, Enhanced and Advanced modes and does not say which pool each mode draws on. A buyer has to work that out before the month starts, and the cautious reading is that the Advanced mode draws on the smaller Advanced pool.

Undetectable AI's page has none of that structure. It names no modes and no request cap, read 9 November 2026, so the plan shape is a single number a month. The site's protocol runs each tool on its default mode and, where a stronger documented mode exists, that mode as a second row; a published run will show Humbot on Quick and on Advanced, and Undetectable AI on whatever its interface shows on the run date.

Both read 9 November 2026.

Humbot's pricing FAQ makes a blanket claim about detector results on every plan, with no method, input set or date attached, and states that free and paid plans produce the same output quality, differing only in word usage and input limit, read 9 November 2026. Its AI checker reports results from GPTZero, Originality.ai and ZeroGPT, which at least tells a reader which detectors the vendor measures itself against. Undetectable AI's name is its claim; its pricing page publishes no accuracy figure that this site could quote with a source, read 9 November 2026, so none appears here.

Weber-Wulff and colleagues tested 14 AI text detectors and found every one below 80 percent accuracy, with accuracy falling further on paraphrased and machine-translated text (Weber-Wulff et al. 2023, International Journal for Educational Integrity, read 9 November 2026). GPTZero, one of the three detectors behind Humbot's checker and one of the five in this site's panel, states that its model shields against common evasion methods, paraphrasing among them, and keeps its false positive rate at no more than 1 percent when evaluating AI against human text (GPTZero technology page, read 9 November 2026). A humanizer and the detectors it reports are moving targets for each other, and any reading is true for its date.

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, with two editors rating every output blind. Three of the five detectors in the panel are the three Humbot's checker reports, so the vendor's own readings can be lined up against independent ones once a run exists. When a run is published, this page gains meaning, error and per-detector fields for both tools. No detector score should be the only evidence in a misconduct case.