Comparison
GradeLab, GradingPen, GradrAI and the other AI graders teachers look up by name
Several of these names lead to more than one website, and one leads to a land-development company. Here is which site is the grading tool, what it grades, and what its own pages say it costs.
The Graidable team
Published
Graidable makes one of the tools compared here. Every claim about another tool links to that vendor’s own page.
| Tool | Grades | Handwriting | Your key | Free option | Paid from |
|---|---|---|---|---|---|
| Gradeasy | Worksheets, quizzes, essays | Yes, photos and PDFs | Your criteria | Not stated | Not published |
| GradeLab | Essays, math, diagrams, MCQ | Yes, scans and photos | Your rubric or key | Trial | Per paper, not published |
| GradeWrite | Typed essays | Not stated | Custom rubrics | 10 a month | $24.99 a month |
| GradeX | Scans, 14 subjects | Yes, scans | Answer keys | 5 students, 60 credits | $30 a month |
| GradexAI | Online assessments | Not stated | Generates rubrics | Trial | Not published |
| GradingPen | Written work, any subject | Yes, photos | Your rubric | 10 grades a month | $19 a month |
| GradrAI | Paper scripts, online tests | Yes, PDF scans | Your marking guide | 30 credits, once | $14 a month |
| Graidable | Any subject | Yes, scans | Your key or rubric | First class free, without a card | $9.99 a month |
Gradeasy
- Grades
- Worksheets, quizzes, essays
- Free option
- Not stated
- Paid from
- Not published
GradeLab
- Grades
- Essays, math, diagrams, MCQ
- Free option
- Trial
- Paid from
- Per paper, not published
GradeWrite
- Grades
- Typed essays
- Free option
- 10 a month
- Paid from
- $24.99 a month
GradeX
- Grades
- Scans, 14 subjects
- Free option
- 5 students, 60 credits
- Paid from
- $30 a month
GradexAI
- Grades
- Online assessments
- Free option
- Trial
- Paid from
- Not published
GradingPen
- Grades
- Written work, any subject
- Free option
- 10 grades a month
- Paid from
- $19 a month
GradrAI
- Grades
- Paper scripts, online tests
- Free option
- 30 credits, once
- Paid from
- $14 a month
Graidable
- Grades
- Any subject
- Free option
- First class free, without a card
- Paid from
- $9.99 a month
In this article
You heard the name of a smaller AI grader from a colleague, a Facebook group or a chatbot, and you want to know what it is before you upload a class set. This page covers seven of them: Gradeasy1, GradeLab2, GradeWrite3, GradeX4, GradexAI5, GradingPen6 and GradrAI7, plus Graidable8, which is ours. They are in alphabetical order, and every cell comes from the vendor’s own pages, read on 10 November 2026.
Start with the address. Five of the names people search for lead to a site that isn’t a teacher’s grading tool, or to two tools with nearly the same name.
Which site is the grading tool
| You searched | You may land on | The grading tool |
|---|---|---|
| gradexai | GradexAI, for universities and accreditation | gradexai.com; GradeX, for schools and tutors, is gradex.m3iox.com |
| gradelab, gradelabs | gradelabs.in, a product designer’s portfolio | gradelab.io |
| gradewrite | gradewrite.com, which redirects to WriteAhead, a writing-feedback extension | gradewrite.ai |
| gradebuilder | gradebuilder.ai, software for land development | No grading tool by this name; you may mean GradeWrite or GradingPen |
| gradgpt | gradgpt.com, a college-admissions essay coach for students | Not a teacher’s grader |
If a colleague gave you the name, ask for the link.
The seven, and Graidable
“Not stated” means the pages we read didn’t say. It doesn’t mean no, so ask the vendor.
Gradeasy
K-12 teachers grading worksheets, quizzes and essays.
- Grades
- Worksheets, quizzes and essays; paper, PDFs and Google Forms
- Handwritten work
- Upload PDFs or photos; its home page says the AI reads handwriting
- Your key
- Each answer is scored against the criteria you wrote; it can also build a rubric for you
- Free option
- Not stated
- Price
- Prices not published; the pricing page was empty when we checked
- Its home page says nothing is published without your approval and that students never create accounts.
- Results export to Google Classroom, Canvas or a CSV.
- The home page shows FERPA and COPPA badges and offers a DPA on request; the privacy policy names Google’s Gemini models and doesn’t mention FERPA.
GradeLab
Schools and universities grading answer sheets.
- Grades
- Essays, math problems, diagrams, multiple choice and mixed formats, in 30+ languages
- Handwritten work
- Scans or phone photos of handwritten answer sheets
- Your key
- Applies your rubric or answer key; you can add rules in plain English, such as method marks for a wrong final answer
- Free option
- A free trial; its pages say 14 days, 90 days and 20 real papers in different places
- Price
- Pay per paper, figures not published, or an enterprise quote; LMS integration is a paid add-on
- Its FAQ says nothing reaches a student without your approval, and grades sync to Google Classroom, Canvas and Moodle.
- Built in India, with board-exam answer sheets among its uses; its GDPR page names US-based servers.
GradeWrite
Teachers grading typed essays and assignments.
- Grades
- Typed essays and assignments; the pricing page gives a 3,000-word limit and, further down, 5,000+
- Handwritten work
- Not stated
- Your key
- Custom rubrics
- Free option
- 10 assignments a month
- Price
- Premium $24.99 a month for up to 200 assignments; districts and colleges on request
- Google Classroom is listed as coming soon.
- Its privacy policy doesn’t mention FERPA, COPPA or training on student work.
GradeX
Teachers, tutors and schools grading scanned pages.
- Grades
- Scanned pages in 14 subjects, from math and the sciences to English, history and computer science
- Handwritten work
- Scanned pages; one credit is one scanned page
- Your key
- Answer keys on every plan, the free one included
- Free option
- Free plan for 5 students and 60 credits (60 scanned pages) a month; each paid plan starts with a 14-day trial
- Price
- Solo $30 a month (12 students), Teacher $60 (25), Studio $99 (40); school plans from $199
- You review and approve; its privacy page says grades go back to Google Classroom or Canvas only when you send them.
- The privacy page says papers are sent to Anthropic’s Claude API, data is stored in the US, and it signs DPAs with institutions.
GradexAI
Universities running online assessments and accreditation.
- Grades
- Online assessments in multiple subjects, with questions and rubrics it generates
- Handwritten work
- Not stated
- Your key
- The AI creates questions, rubrics and grading criteria; using your own key is not stated
- Free option
- Free trial on the Educators plan
- Price
- Prices not published; Enterprise through sales
- You review the grading and adjust it; its home page names ABET and AACSB accreditation reports.
- The home page says FERPA; its privacy policy cites GDPR and doesn’t mention FERPA.
GradingPen
K-12 to graduate school; US, UK and Australia.
- Grades
- Essays and any written assignment, lab reports and math explanations among them; PDF, Word, images or pasted text
- Handwritten work
- A photo of a handwritten essay
- Your key
- Upload or build your own rubric
- Free option
- 10 grades a month on Teacher Free; the same page and the home page also say 15 free grades for a new account
- Price
- Teacher Pro $19 a month for 250 grades, Teacher Max $29 for 350; the home page shows Teacher Pro at $199 a year, unlimited
- Its FAQ says every grade can be edited and overridden before it reaches a student; grades go back through Google Classroom.
- The home page lists Canvas, Schoology, Moodle and more as live; the pricing page lists LMS integration on the School plan.
- Its FERPA page offers a data privacy agreement, and the privacy policy says student data isn’t used to train AI.
GradrAI
Paper scripts, for schools mainly in Nigeria.
- Grades
- Paper or digital submissions; it also builds and runs online tests
- Handwritten work
- Scanned scripts, uploaded as PDFs with the question paper
- Your key
- Your marking guide, with mark allocations and accepted approaches
- Free option
- 30 credits, once, as a trial; one credit per script, so 30 scripts
- Price
- Educator $14 a month for 200 credits ($143 a year); Institution $45 a month for 800 credits and 10 seats; also sold in naira
- Marks come question by question with explanations for you to review; its pages say you make the final call.
- LMS integrations and FERPA or GDPR terms are not stated.
GraidableOur tool
Handwritten or typed tests, graded from your own key.
- Grades
- Tests and assignments in any subject and language, typed or handwritten
- Handwritten work
- Handwritten, multi-page scans, question by question
- Your key
- Your own answer key or rubric, points or levels; it can draft the criteria from your task for you to approve
- Free option
- Your first class is free without a card: up to 30 students within 30 days, once your email is confirmed; the first plan then starts with 20 free gradings
- Price
- Student $9.99 and Professional $24.99 a month (10 and 60 students graded a month); schools get a price on request
- You approve every grade before anything reaches a student; you get feedback PDFs and a spreadsheet of each student’s points per question.
- The data processing agreement, DPIA material and sub-processor list are public pages.
What the table shows
Five of the seven read handwriting from a scan or a photo. GradeWrite takes typed work, and GradexAI runs its own online tests, so paper doesn’t come into it.
The free options are hard to compare, because each tool counts something different. GradeWrite and GradingPen count assignments or grades, GradeX counts students and pages, and GradrAI counts scripts, once. Gradeasy, GradeLab and GradexAI publish no price at all. For a class set of 30 two-page tests, GradeX’s free plan covers 5 students, GradrAI’s trial covers the set once, and GradingPen’s free month covers 10 to 15 papers.
We’d pick by the paper first. If your students write by hand, the shortlist is Gradeasy, GradeLab, GradeX, GradingPen and GradrAI, and then whichever of those sends grades where you need them.
Where the pages disagree
Smaller tools change fast, and their pages don’t always keep up. On 10 November, GradingPen’s pricing page said 10 free grades a month and 15 for a new account, and its home page priced Teacher Pro by the year with unlimited grading. GradeLab gave three trial lengths. Gradeasy’s and GradexAI’s home pages named FERPA, and their privacy policies didn’t. Get the price and the data terms in writing before a real class set goes in.
Five checks before you upload to a tool you found by name
- Open the site from the link your colleague used, not from a search result. Check the domain against the first table.
- Find the company’s legal name and country on the terms page.
- Read the privacy policy, not just the badges on the home page. Look for FERPA, training on student work and where the data is stored.
- Write down what the free option counts (students, pages, scripts or grades) and how long it lasts.
- Grade one set with the names removed, and check every score question by question before students see anything.
Graidable is the tool we make. This part is about it.
Where Graidable fits
Graidable is one of the eight, and it is ours. It is built for the tests your students hand in on paper: you upload the scans with your answer key or rubric, it drafts points and a comment for each question with a pointer to where on the page each mark comes from, and you approve every grade. The first class is free without a card.
The better-known tools (CoGrader, EssayGrader, GradingPal and others) are compared in Alternatives to CoGrader, EssayGrader and GradingPal and by price in Free AI grading tools for teachers.
Sources
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Gradeasy, home page, privacy policy and terms. Checked 10 November 2026. ↑
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GradeLab, home page, FAQ, pricing and GDPR. Checked 10 November 2026. ↑
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GradeWrite, pricing and privacy policy. Checked 10 November 2026. ↑
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GradeX by M3IOX, pricing and privacy. Checked 10 November 2026. ↑
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GradexAI, home page and privacy policy. Checked 10 November 2026. ↑
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GradingPen, pricing, home page, FERPA and privacy. Checked 10 November 2026. ↑
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GradrAI, home page, including its plans and FAQ. Checked 10 November 2026. ↑
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Graidable, Pricing; the tool is ours. Checked 10 November 2026. ↑