Is hosting exams really free?

Yes. Creating exams, QR and link access, join codes, live quiz rooms, MCQ and OMR auto-grading, the proctoring log, the student ledger and CSV export are all free with no limits. Credits are only spent when the AI grades handwritten scripts or typed essays.

How does the live quiz room work?

You open a room from the host console and put the join code on the projector. Students go to the play page, type the code and pick a nickname — no accounts. You advance each question yourself, faster correct answers score more, and the leaderboard updates as answers arrive. When you finish, every player becomes a normal submission in your gradebook.

How do students take an exam?

They open a link or scan a QR code, or type a join code for a live quiz. There is no app to install and no account to create. For OMR they don't need a device at all — they fill in a printed sheet you photograph afterwards.

How does the credit system work?

A standard grade costs 1 credit and highlighted feedback costs 2. Free accounts receive 25 credits each month; Teacher Pro and no-expiry top-ups provide more capacity. The copying check is an optional add-on: 1 credit per script the first time it reads a class.

Does the AI mark the script itself?

Yes. Alongside the written feedback, each mistake and each strength is highlighted over the exact words on the page where it happens, with a one-line note — red for a mistake, green for something done well. You can drag any mark to a better spot, edit or delete its note, add your own, and nothing is shown to the student until you publish.

Can it tell if students copied from each other?

The copying check compares every script in one exam or batch against the others — word for word and by meaning — and ranks the pairs worth a look, quoting the passage they share. Phrasing the whole class was taught is ignored, so a shared textbook definition doesn't flag anybody. It's a signal for you to judge, never an automatic penalty, and it never changes a grade. It's an add-on: ask us to enable it on your account.

Can I grade a whole class at once?

Yes. A batch run takes one question paper and one rubric, then grades every script in the class against them. You watch the progress, review the scripts as a queue — save and move to the next — and export the lot as CSV.

Does the AI have the final say on grades?

Never. Every AI grade arrives as an editable draft next to the student's work. You adjust the score, rewrite the feedback, move or remove any mark on the page, or replace it entirely before anything reaches a student.

Does it handle handwriting and formulas?

Yes. The OCR reads handwritten text, mathematical equations, chemical formulas and structured data, across English, Bengali and mixed-language scripts.

Can I grade against my own materials?

Yes. Upload your textbooks, notes or reference material and the AI uses them as context while grading, so it marks against what you actually taught rather than general knowledge.

Does Zachai work inside Google Classroom itself?

Yes, two ways. As a native Classroom add-on, you attach Zachai to an assignment and students submit, and you review, in iframes inside classroom.google.com — nothing to open elsewhere. Or connect a Google account from Zachai and pull an assignment in to work from here instead. Either way, a grade only reaches the Classroom gradebook after you approve it.

Does it work for a whole institution?

Yes. Institutions get a shared credit pool, a roster, sections, and roles, so a department buys credits once and every teacher draws from the same pool.

Is student data secure?

Data is encrypted in transit and at rest, and we never use your students' submissions to train public models. You can delete any of it at any time.

Can I track students across semesters?

Yes. The student ledger records grades per student with notes, sections and performance categories. Filter by performance, search by ID, and export everything as CSV.

Exam hosting for real classrooms

Run the whole exam. Grading comes with it.

Written papers collected by phone. Quizzes that score themselves — including a live room you host from the front. Typed essays. Printed bubble sheets. One platform for however your class actually sits an exam.

Host your first exam free See pricing

Free hosting, always. 25 grading credits each month — no card needed.

A photographed handwritten answer script with the grader's marks pinned on the page

1The definition of confidentiality is accurate and well-explained.

2Says “patient students information” instead of “students’ personal information”.

7/10

Draft · you approve

Four ways to run an assessment

Whatever the room allows

An exam hall with no wifi and a quiz on a projector are not the same problem. Each format is its own product, not a setting buried in a dropdown.

Hand out paper. Collect it with a phone.

Run a timed written exam and let students photograph their answer scripts from any phone — no app, no accounts. Pages arrive stitched into one PDF, ready to read.

Open Written

Timed exam with QR or link access
Camera capture, any phone
Mistakes marked on the page itself
Grade a whole class in one run
Proctoring log for tab switches

How it works

Set up in minutes, not a training session

1
Pick the format
Written, quiz, essay or OMR — whichever suits the room you actually teach in.
2
Share the way in
A link, a QR code, a join code, or a printed sheet. Students need no account.
3
Run it live
Start, pause, extend or end. Watch submissions land and see who left the window.
4
Grade and publish
Objective formats score themselves. Written work comes back marked on the page — you adjust and publish.

Works with your LMS

Keep the gradebook you already have

Nobody is migrating a department off its LMS to try a grader. Google Classroom works today — as a native add-on inside Classroom itself, or as a connector into Zachai — and Moodle is being prepared for publication, with Canvas following next. Every integration keeps approved grades in the school's existing gradebook.

Google Classroom

Available now

Add-on inside Classroom, or sign in with Google

Attach Zachai to an assignment as a native Classroom add-on — students submit and you review without leaving classroom.google.com. Prefer to work from Zachai instead? Connect an account and pull assignments in the same way. Either way, the grade only posts to the Classroom gradebook once you approve it.

Moodle

Coming soon

Plugin publishing in progress

The Moodle plugin is built and being prepared for Marketplace review. Once published, it will send submissions to Zachai and return only the grades you approve.

Canvas

Coming soon

Planned after Moodle

Canvas support is next on the LMS roadmap. It will use the same teacher-reviewed workflow, but the Canvas-side integration has not been released yet.

Two connected LMS sites in the Zachai dashboard: a Google Classroom account with 38 assignments imported, and a Physics department Moodle site with 112 runs received — Your connections, as the dashboard shows them — an API key you can revoke at any time, and the last time each site called in.

Your connections, as the dashboard shows them — an API key you can revoke at any time, and the last time each site called in.

Grading, included

You have the final say

Quizzes and bubble sheets score themselves the moment they arrive. Handwritten scripts and typed essays get an AI draft against your rubric — marked on the page itself, next to the student's work, never a verdict.

Mistakes and strengths marked on the script, not just summarised
Every mark and grade is editable before anyone sees it
Grades against your own rubric and materials
Straight into the gradebook, ledger and CSV export

The rubric breakdown returned by the grader: three criteria with scores, comments and a total of 7 out of 10 — The breakdown that comes back with a written script — criterion by criterion, against your rubric, and yours to change before publishing.

The breakdown that comes back with a written script — criterion by criterion, against your rubric, and yours to change before publishing.

An OMR bubble sheet scored automatically: 12 of 15 correct, one blank, wrong answers showing the key beneath — Bubble sheets need no grading run at all — photograph the stack and every paper is scored, with each wrong answer shown against the key.

Bubble sheets need no grading run at all — photograph the stack and every paper is scored, with each wrong answer shown against the key.

Reads handwriting

Math, chemistry, and mixed English/Bengali scripts.

Marks the page

Each mistake pinned where it happens, with a note the student can act on. Drag any mark to correct it.

Grades a whole class at once

One question paper, one rubric — every script in the batch graded and queued for you to review, then exported as one CSV.

Spots copied work

Compares a class against itself and shows the shared passage — phrasing everyone was taught is ignored.

Knows your material

Upload notes and textbooks; grading follows what you taught.

Tracks the cohort

A ledger that follows students across semesters.

Built for institutions

Shared credit pool, roster, sections and roles.

Your students’ work stays yours

Encrypted in transit and at rest. We never train public models on your submissions, and you can delete anything at any time.

No student accounts needed

A link, a QR code or a join code is enough. Nothing to install, nothing to sign up for, nothing to reset.

Free hosting, honestly free

Exams, live rooms, auto-grading and exports carry no limits. Credits only apply to AI grading of written work.

For institutions

One department buys credits once

Set the institution up and every teacher in it draws from the same pool — no one is expensing credits on their own card, and you can see where they went.

Create an institution Talk to us about bulk pricing

Shared credit pool

Buy once at department level; every teacher spends from it.

Roster, sections, roles

Students and staff organised the way the institution already is.

Org-wide material

One resource library, so everyone grades against the same syllabus.

Usage by teacher

See which credits went where, per teacher and per section.

Institutions on Zachai

Daffodil International University
BRAC University
Pwani University
Johannes Kepler University Linz
Daffodil International University
BRAC University
Pwani University
Johannes Kepler University Linz
Daffodil International University
BRAC University
Pwani University
Johannes Kepler University Linz
Daffodil International University
BRAC University
Pwani University
Johannes Kepler University Linz

Simple, credit-based pricing

Start free. Add capacity when marking season gets busy.

Every account receives 25 grading credits each month. Subscribe for predictable capacity or buy a no-expiry top-up when you need one.

Free

forever

For exploring the full grading workflow.

25 credits every month
Written, quiz, essay and OMR exams
Teacher review before release
No card required

Start free

Recommended

Teacher Pro

$12

per month

400 credits added every month.

Google Classroom and batch grading
Custom rubrics and annotated feedback
Similarity checking and resources
Cancel from the billing portal

See Teacher Pro

Institutions

$299

60-day pilot

For departments, schools and coaching centres.

Up to 10 teachers
2,000 shared credits
Sections, roles and usage reporting
Live onboarding and priority support

Explore institution plans

Prefer to pay only when you need more?

Buy 150 credits for $5 or 1,000 for $25. Top-ups never expire.

View top-ups

Questions

Answered plainly

Zachai is an exam hosting platform for teachers and schools. You run the whole assessment in one place — written exams collected by phone camera, quizzes that grade themselves, typed essays, and printed OMR bubble sheets — and grading comes with it. Hosting is free; AI grading of handwritten and typed work uses a pay-as-you-go credit.

Knowledge base

Written for teachers

All articles

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Kahoot Alternative — From Gamified Quizzes to AI-Powered Exam Grading

Kahoot makes a quiz feel like a game. FifthEye AI's live quiz room now does the same thing — host-paced rounds, a join code on the projector, a live leaderboard, streaks — and then turns the final scores into real gradebook entries the moment the game ends. Here's an honest comparison of where each one fits.