Head to head · Walter Writes AI
Walter Writes AI vs Undetected AI: the request cap and the proof decide it
The short answer
Walter Writes AI and Undetected AI are both mainstream humanizers, and two things separate them. Walter Writes gives a generous entry word pool (30,000 words a month on its $8 Starter billed yearly) but caps each request at 750 words, so long drafts get split. Undetected.ai takes up to 1,500 words a run, twice their cap, and shows our own AI-pattern score before and after with the reasons behind it, where Walter Writes reports a single in-house detector score with no explanation. Walter Writes wins on raw entry words; Undetected wins on how much goes in at once and on a score that names what it counted.
Last updated July 2026 · Pricing read off each vendor's own page
2 free runs a day, up to 200 words each. We save your run so you can get back to it, and a delete button appears with the result. See privacy.
This is our own AI-pattern score, measured here on sentence rhythm, template phrases, vocabulary variety and passive voice. It is not a GPTZero, Turnitin, Originality.ai, Copyleaks or ZeroGPT result, and it does not predict one. Worth knowing: we also ask the rewrite to vary sentence length, drop template phrases and prefer the active voice, so some of the drop is built in. Read the two panels below, not just the number.
Before ·
After ·
Meaning kept · Your own text rewritten · Saved to your history, delete any time
Walter Writes AI has built a solid reputation as an affordable humanizer with a clean interface, an 80-plus language range, and a built-in detector score on every rewrite. Its entry plan is genuinely generous on word count, and for many buyers it is a strong pick.
The comparison with Undetected.ai turns on two practical details most feature lists bury: the per-request word cap and what proof you get that the rewrite cleared detection. This page puts the real July 2026 numbers side by side and is honest about where Walter Writes is the better buy.
Verified pricing
Walter Writes AI vs Undetected.ai pricing
Walter Writes AI prices re-read first-party on walterwrites.ai on August 24, 2026, across three identical loads, and reflect annual billing. Plans change, so check their page for the latest.
| Plan level | Undetected.ai | Walter Writes AI |
|---|---|---|
| Entry plan | Starter: 15,000 words/mo at $9/mo billed yearly ($12 monthly) | Starter: 30,000 words/mo, 750 words per request, at $8/mo billed yearly ($96/year) |
| Mid plan | Pro: 80,000 words/mo at $19/mo billed yearly ($24 monthly) | Pro: 70,000 words/mo at $13/mo billed yearly ($156/year) |
| Top plan | 250,000 words/mo at $39/mo billed yearly ($48 monthly) | Elite at $26/mo billed yearly ($312/year); Teams at $99/mo billed yearly |
| Free usage | Free account: 3 runs/day, 9,000 words/mo; the on-page demo runs twice a day with no account | 300-word free trial, no card required |
Prices change and promos expire. Always confirm on each vendor's pricing page before buying.
Side by side
What each tool actually does
A fair look at where each one wins. Both are capable humanizers; the fit depends on your volume and workflow.
| What matters | Undetected.ai | Walter Writes AI |
|---|---|---|
| Entry-plan words per month | 15,000 words | 30,000 words (more raw words at entry) |
| Per-request word cap | 1,500 words a run, twice their cap | 750 words per request, so a long article is split into several passes |
| Long documents | Up to 1,500 words in one run; past that you split it yourself | Split into 750-word chunks, then reassembled |
| What you see after the rewrite | Our AI-pattern score before and after, with the reasons behind it | A score from Walter Writes' own in-house detector |
| Top-tier volume | 250,000 words/mo at $39 billed yearly | Elite and Teams tiers; volume not published as a monthly word count |
| Best suited for | Long-form drafts and buyers who want to read what the rewrite changed | Shorter pieces that fit the 750-word request cap, on a tight budget |
The 750-word request cap, in practice
Walter Writes\' Starter plan carries 30,000 words a month, twice our Starter pool, and at $8 billed yearly it is genuinely cheap per word. That is a real advantage, and worth saying plainly.
The catch is the 750-word cap on each request. A typical 1,800-word article does not go through in one pass; it goes through as three requests, and you stitch the output back together. Humanized text is most fragile exactly at those seams, where the tone can shift between chunks. Undetected.ai takes 1,500 words a run, so that article is two pieces rather than three, and anything up to 1,500 words goes through whole. We have a ceiling too and we are not going to pretend we do not; it is twice theirs, which is the honest version of the advantage.
One in-house score vs a score that shows its working
Both tools show you something after a rewrite. Walter Writes reports a score from its own built-in detector, which is useful immediate feedback. Undetected.ai also scores with its own measure, and the difference is that ours lists what earned the number, so you can check it against your own text. Neither tool can tell you what GPTZero, Turnitin, Originality.ai, Copyleaks or ZeroGPT would report, because neither of us has access to any of them.
The difference matters because detectors disagree with one another. A single in-house score tells you how one detector sees your text. Neither of us can query the panel your teacher, editor or client actually runs, and clearing one detector would not mean clearing the others anyway. What we show instead is what we measured and why, which is worth more than trusting one.
Where Walter Writes is genuinely the better pick
Walter Writes earns its following. The entry price is one of the lowest in the category for the word count, the interface is clean, the 300-word free trial lets you judge output before paying, and its 80-plus language support is broader than most rivals advertise.
If your pieces are short enough to fit the 750-word request cap, if you write in a less common language, or if you simply want the most words per dollar at the entry tier, Walter Writes is a smart, honest choice. The comparison tips toward Undetected.ai when your pieces run past 750 words and you would rather not split them, or when you want a score that lists what it counted rather than a single unexplained in-house number.
The honest split
Who should pick which
Pick Undetected.ai if
- You write pieces between 750 and 1,500 words and would rather not split every one of them
- You want a score that lists what earned it, not a bare pass claim
- You may grow into six-figure monthly volume and want a published flat $39 price for it
Pick Walter Writes AI if
- Your pieces are short and fit inside the 750-word request cap
- You want the most entry-plan words per dollar (30,000 words at $8 yearly)
- You write in a less common language or want a 300-word free trial first
No tool wins every workload. Test both on your own text before committing to a year.
Good questions
Walter Writes AI vs Undetected.ai, answered
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Every major humanizer compared in one honest table, with verified pricing.
Further reading: Walter Writes AI review: the detector claims, the word limits and the price per word · Best AI humanizer in 2026, compared · The student guide to humanizing an essay · Do AI humanizers actually work? What testing shows
Try Undetected.ai on your own text
Paste your own text and read the rewrite next to the original, with our AI-pattern score measured on both before you copy.
Meaning kept · Your own text rewritten · Saved to your history, delete any time