GPTZero vs WriteHuman (2026): which should you pick?
As of Nov 13, 2026, GPTZero grades higher than WriteHuman: 2.4 against 2.2 out of 4.0.
Checked Nov 13, 2026 · graded Nov 13, 2026 by ToolGPA
GPTZero grades higher on features. They get the same grade on value for money, the free plan, ease of use and platforms.
Price, platforms and features side by side. The table says where each price was read and when.
GPTZero
AI-writing detector with plagiarism, writing replay and an API
WriteHuman
AI humanizer with a built-in AI text and image detector
Which one is for you
Pick GPTZero if
- Fits if you grade or review writing and want to check it for AI
- Works for teachers whose classes run on Canvas or Google Classroom
Look elsewhere if
- Tight if you check a lot: the free plan stops at 10,000 words a month
- Skip it if you want one clear price, because paid prices vary by region and by test
- Pricey if you want a team: two-seat minimum, and the API is priced separately
- Watch out: the vendor's own wording suggests a detector is a guide, not proof
Pick WriteHuman if
- Fits if you rewrite short passages and want a detector beside them
- Works for people who want MCP access to a humanizer
Look elsewhere if
- Tight if you stay free: 3 requests a month and 250 words each
- Skip it if you work with long documents, because requests cap at 600 or 1,200 words
- Pricey if you pay monthly: Basic is $20 against $12 on a yearly plan
- Watch out: the API is priced separately from these plans
How we grade them
| 2.4GPAGPTZeroFair | 2.2GPAWriteHumanFair | |
|---|---|---|
| Value for money | CNo single US dollar list price could be read, and prices vary by region. Left in the middle of the category. | C$12 a month billed annually ($20 monthly) for Basic, at the category's dearer-quarter mark. |
| Free plan and trial | CA free plan up to 10,000 words a month, which a regular user will hit. | C3 humanizer requests a month of up to 250 words, 10 detection checks and 10 image scans. Few people stay under that. |
| Features | BAI detection, writing replay, plagiarism, grammar feedback, a hallucination checker and an API. Nothing in the listing shows a gap in the core job. | CHumanizer, text and image detection, a Chrome extension, API and MCP. Word limits of 600 on Basic and 1,200 on Pro split long documents. |
| Ease of use | CNo store rating on record. You make an account and connect it to Docs or a class system. | CNo store rating on record. Paste and run, but with output variations and limits to learn. |
| Platforms and integrations | BWeb and a Chrome extension, with Google Docs, Canvas, Google Classroom, Gmail and an API. | BWeb and a Chrome extension, with an API and MCP access. |
| Best for | checking whether text looks AI-written | humanizing AI text with a built-in detector |
The GPA is the average of the five grades: an A is 4 points, an F is none. The full reasons are on each tool's page: GPTZero and WriteHuman. How we grade
Where they differ
- GPTZero also covers grammar & style.
At a glance
| GPTZero | WriteHuman | |
|---|---|---|
| Pricing | Free plan | Free plan |
| Starts at | Not published | $12 per month, billed annually ($20 billed monthly) |
| Free plan | Free plan covering up to 10,000 words per month, according to the vendor's pricing FAQ. | 3 humanizer requests a month of up to 250 words, 1 output variation, 10 detection checks and 10 image scans, on the basic humanization model. |
| Free trial | None listed | None listed |
| Web | ||
| Browser extension | ||
| Made by | GPTZero | WriteHuman |
| Price read from | Not confirmed | writehuman.ai |
| Checked | Nov 13, 2026 | Nov 13, 2026 |
Worth knowing
GPTZero
- Paid individual plan prices vary by region and by test; no single US dollar list price could be read.
- The free plan stops at 10,000 words a month.
- The team plan has a two-seat minimum and gives 500,000 words per member each month.
- The API is priced separately from the individual and team plans.
WriteHuman
- The free plan allows 3 requests a month and a maximum of 250 words per request.
- Each request has a word limit of 600 on Basic and 1,200 on Pro, so long documents are split.
- Annual billing is shown as the headline price; month-to-month Basic is $20.
- API access has its own word-based pricing page and is not part of these plans.
Key features
GPTZero
- AI detection
- Classifies text from models such as ChatGPT, Claude, Gemini and Llama; an Advanced Scan shows how different sentences score.
- Writing replay in Google Docs
- The Chrome extension records a replay of a document being written, including copy and pastes and unusual typing patterns.
- Plagiarism checker
- Checks whether content was copied from outside sources without attribution.
- Writing feedback and grammar check
- Gives feedback on clarity, tone and wordiness beyond a basic grammar check.
- Hallucination detector
- A separate checker aimed at hallucinated content in AI-written text, listed beside the AI detector.
- Classroom and API integrations
- Connects to Canvas and Google Classroom, and offers an API with code samples in 17 languages.
WriteHuman
- AI humanizer
- Rewrites AI text into several output variations per request, with a basic model on the free plan and an enhanced one on paid plans.
- AI text detector
- Checks whether text looks machine-written. Monthly check counts run from 10 on Free to unlimited on Ultra.
- Image detector
- Scans images for AI generation, with 10 scans a month on Free and unlimited on Ultra.
- Chrome extension
- The site lists an extension for humanizing and fixing writing in any browser tab.
- API and MCP
- A REST endpoint to humanize and detect text is sold separately with word-based pricing, and an MCP connection is included from Pro.
Plans
GPTZero
Pricing could not be confirmed. See gptzero.me.
WriteHuman
Free$0
3 humanizer requests a month, up to 250 words each, 10 detection checks and 10 image scans.
Basic$12
per month, billed annually ($20 billed monthly)
80 requests a month, up to 600 words each, 2 output variations, enhanced model, 160 detection checks and 80 image scans. Billed $144 a year.
Pro$19
per month, billed annually ($29 billed monthly)
200 requests a month, up to 1,200 words each, 3 output variations, 400 detection checks, MCP access and priority support. Billed $228 a year.
Ultra$39
per month, billed annually ($59 billed monthly)
Unlimited requests, up to 3,000 words each, 5 output variations, unlimited detection checks and image scans, and 1,000 MCP requests a month. Billed $468 a year.
Ways to pay less
GPTZero
No public discounts listed.
WriteHuman
- Annual discount
Yearly billing saves up to $240 a year
The pricing page shows yearly billing as four months free, for example $144 a year on Basic against $240 billed monthly.
Common questions
Which is cheaper, GPTZero or WriteHuman?
As of Nov 13, 2026, GPTZero has no price we could confirm, and WriteHuman starts at $12 per month, billed annually ($20 billed monthly).
Which has a free plan, GPTZero or WriteHuman?
As of Nov 13, 2026, both GPTZero and WriteHuman have a free plan.
More comparisons
How this page was made
- The verdict at the top follows a fixed rule. When both tools are in the same category and either is in our top three for it, the verdict follows that ranking: the higher-placed tool is our pick. The top three weigh who each tool suits as well as its grades, so a pick can go against the GPA. Otherwise the page does not pick one and says which grades higher: the higher GPA first; on a tie, the one with a free plan, then the one that starts cheaper in dollars a month, counted the same way for both; if they are still level, what the choice depends on.
- The grades are our own, from each tool’s review or report card. The GPA is their average.
- Prices, plans and platforms come from each tool’s listing. The table above says where each price was read and when.
- The differences and the answers to the questions are worked out from those listings.