AI humanizer word limits: every tool's free and paid cap per request

One table, 27 tools, free cap and paid cap side by side. "Paid" means the cheapest paid plan that states a cap; a higher plan's cap is noted where the vendor states one. Units are words unless the vendor counts something else.

Every price and cap was checked on the date in its row. Phrasly's pricing page states a 5,000-word process limit on Unlimited and 800 words on the $2 trial (Phrasly, pricing, read 9 November 2026). StealthWriter's page states 5,000 words per input on every paid plan and 1,000 on the free tier (StealthWriter, pricing, read 9 November 2026). HIX Bypass states 3,000 words per input on Standard and Premium and no cap on Unlimited (HIX Bypass, pricing, read 9 November 2026). QuillBot states a 125-word input limit on its free humanizer (QuillBot, AI Humanizer, read 9 November 2026).

By stated figure, Phrasly and StealthWriter at 5,000 words a request on paid plans, read 9 November 2026. By absence of a figure, three Unlimited plans state no request cap at all: HIX Bypass Unlimited at $59.99 a month, Rewritify Unlimited at $49 monthly and Humbot Unlimited, read 9 November 2026. "No cap stated" is weaker than a stated cap. A plan that publishes no limit can enforce one at the interface, and a fair-use clause may sit behind it, as Grubby AI's 30,000-word daily fair-use line on its Unlimited plan shows, read 9 November 2026.

Among free tiers the answer is Clever AI Humanizer at 3,000 words with no sign-up and no monthly cap stated, as read on the vendor site on 8 November 2026, with StealthWriter next at 1,000 words ten times a day and Surfer at 500 words without an account, read 9 November 2026.

The entry plans that state a cap split into three bands.

Walter Writes AI sits in the middle band and shows why the cap and the pool have to be read together: Starter gives 30,000 words a month, one of the larger entry pools here, but accepts only 750 words a request, so a 3,000-word report is four pieces, checked on 8 November 2026. HIX Bypass shows the reverse: 3,000 words a request on Standard, but a 5,000-word month, so the same report fits in one request and uses most of the month, read 9 November 2026.

Split at a heading, not at a word count, and keep the original beside the output. Each piece is rewritten with no memory of the last, so the joins are where a defined term changes synonym, a running example drifts and the register shifts. Fewer, larger pieces mean fewer joins. Read the last paragraph of one output with the first of the next, and search every output for the proper nouns and figures in the original.

Check the unit, too. GPTHuman states its caps in words of output and WriteHuman bills input words, read 9 November 2026, while most vendors do not say which they count. A rewrite that comes back longer than its input, which the method's error count will show per tool, costs more against an output-counted cap.

Price is reported here and never ranked. Which tool keeps the most meaning across those joins is what the published method measures, on 350 to 500 word inputs that every paid entry plan on this page accepts whole; no tool here has a score yet.