Head to head · WriteHuman
WriteHuman vs Undetected AI: requests or words, pick your meter
The short answer
WriteHuman and Undetected AI meter usage differently, and that is the real decision. WriteHuman sells requests (80 per month at 600 words each on its $12-a-month yearly Basic plan, per its July 2026 pricing page), so long documents cost multiple requests. Undetected.ai sells a words pool (15,000 a month on the $9 Starter) and a flat $39 unlimited tier. WriteHuman is polished and well regarded; Undetected.ai is the cheaper way to humanize real volume.
Last updated July 2026 · Pricing read off each vendor's own page
Your text is never stored or used to train models.
Cleared. Reads 100% human.
Before · flagged as AI
After · reads human
Meaning kept · 5 detectors, one pass · Never stored or used for training
WriteHuman is one of the better-regarded humanizers in the category: clean product, readable output, and a built-in detector score with every rewrite. Third-party reviewers regularly rank it near the top, and that reputation is deserved.
The comparison with Undetected.ai comes down to how each tool charges. WriteHuman meters requests with a word cap per request. Undetected.ai meters a monthly word pool. Depending on what you write, the same $15 buys a very different amount of humanizing, and this page walks the actual numbers.
Verified pricing
WriteHuman vs Undetected.ai pricing
WriteHuman prices re-verified on writehuman.ai/pricing on 2026-07-16. Plans change, so check their page for the latest.
| Plan level | Undetected.ai | WriteHuman |
|---|---|---|
| Entry plan | Starter: 15,000 words/mo at $9/mo billed yearly ($12 monthly) | Basic: 80 requests/mo, 600 words per request, at $12/mo billed yearly ($18 monthly) |
| Mid plan | Pro: 80,000 words/mo at $19/mo billed yearly ($24 monthly) | Pro: 200 requests/mo, 1,200 words per request, at $18/mo billed yearly ($27 monthly) |
| Top plan | Unlimited words at $39/mo billed yearly ($48 monthly) | Ultra: unlimited requests, 3,000 words per request, at $36/mo billed yearly ($48 monthly) |
| Free usage | No free tier; the on-page demo shows the rewrite and gauge | 3 requests/mo at 250 words each |
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 | WriteHuman |
|---|---|---|
| How usage is metered | A monthly word pool; a 2,000-word piece just uses 2,000 words | Requests with a per-request word cap; a 2,000-word piece needs multiple requests on Basic and Pro |
| Entry-plan capacity | 15,000 words for $9/mo billed yearly | Up to 48,000 words for $12/mo billed yearly, but only in 600-word chunks |
| Long documents | Paste the whole draft in one pass | Split to fit the per-request cap, then reassemble |
| Proof the rewrite worked | Live gauge plus per-detector badges for all five major detectors | Built-in AI detector score with each rewrite |
| Integrations | API via the Team plan (contact sales) | API plus an MCP server for agent workflows |
| Best suited for | Long-form content and high monthly volume at a flat price | Short-form pieces that fit neatly inside one request |
Requests vs words: what the same article costs
Take a 1,800-word article. On Undetected.ai, that is 1,800 words out of your pool, pasted and humanized in one pass. On WriteHuman's Basic plan, the 600-word request cap means splitting the article into three chunks, spending three of your 80 monthly requests, and stitching the output back together while hoping the tone stays consistent across the seams.
On raw capacity, WriteHuman's Basic plan is generous: 80 requests times 600 words is 48,000 words a month for $12 billed yearly, more raw words than our Starter. The catch is the shape of the meter. Short social posts and product blurbs fit a request beautifully. Long-form does not, and stitched seams are where humanized text tends to wobble.
Proof: two different philosophies, both legitimate
WriteHuman shows a detection score from its own built-in detector alongside each rewrite, which is genuinely useful feedback. Undetected.ai shows a live gauge with a separate pass badge for each of the five major external detectors: GPTZero, Turnitin, Originality.ai, Copyleaks, and ZeroGPT.
The distinction matters because detectors disagree with each other. A score from one in-house detector tells you how that detector sees your text; per-detector badges tell you how the panel your client or editor actually uses will see it.
Where WriteHuman is genuinely the better pick
WriteHuman earns its reputation. The interface is one of the cleanest in the category, third-party tests regularly praise its output readability, and it ships developer-friendly extras like an MCP server that agent-based writing workflows can call directly, something few competitors offer.
If your work is short-form, if you want a free taste before paying (3 requests a month), or if you are wiring a humanizer into an AI agent pipeline today, WriteHuman is a strong choice. The comparison tips toward Undetected.ai when your drafts run long or your monthly volume makes a flat unlimited price the safer budget.
The honest split
Who should pick which
Pick Undetected.ai if
- You write long-form and want to humanize a whole draft in one pass
- Your monthly volume is high enough that a flat $39 unlimited plan beats metered requests
- You want the five-detector panel shown clearing, not one in-house score
Pick WriteHuman if
- Your pieces are short and fit inside a single request
- You want a free monthly allowance to keep testing output
- You need an MCP server or API for an agent workflow right now
No tool wins every workload. Test both on your own text before committing to a year.
Good questions
WriteHuman vs Undetected.ai, answered
Keep comparing
More head-to-head comparisons
Try Undetected.ai on your own text
Paste your text, watch the detection gauge flip from red to green, and see meaning-preserving prose clear all five detectors before you copy.
Meaning kept · 5 detectors, one pass · Never stored or used for training