Real coding tests for learners. Real auto-grading for you.
Vacademy ships a full in-browser IDE with multi-language compilation, hidden + sample test cases, time/memory limits, plagiarism detection, and proctored exam mode — powered by Judge0 under the hood. Run a hackathon for 5,000 candidates, or a weekly DSA quiz for a cohort of 12.
- Python · C++ · Java · JS · 30+ languages
- Hidden + sample test cases
- Auto-grading with time & memory limits
- Plagiarism detection across the cohort
MOSS-tokenized similarity flagged for review · variable renaming detected
Why teams switch
The status quo is costing your team time and money
Generic exam tools can't grade code
Most LMSes treat code as a text-blob. Learners paste code; a TA reads it manually; results take a week. That's not assessment — that's a guessing game.
Standalone coding platforms are a separate spend
HackerRank, Codility, and CoderPad start at $400–$1,200 per concurrent user. For a 1,000-learner academy, that's six figures a year — for one feature.
Plagiarism is the silent killer of credibility
Without cohort-wide similarity detection, you don't know if half the class copied the same Stack Overflow answer. Your certificate stops meaning anything.
Inside the IDE
Run code, see verdicts, catch plagiarism — same screen
Full Judge0-backed editor with sample + hidden test cases, time/memory verdicts, and cohort-wide similarity detection.
MOSS-tokenized similarity flagged for review · variable renaming detected
How a coding assessment works
From problem statement to graded report in one workspace
Built on Vacademy Assessment Service with Judge0 evaluation. Every step — authoring, attempting, judging, reviewing — happens inside the same platform.
Author the problem
Write the problem statement, define I/O format, set sample test cases (visible) and hidden test cases (graded). Pick allowed languages and resource limits.
Learner solves in-browser
Full IDE with syntax highlighting, autocomplete, theme toggle, custom input, and instant 'Run sample' feedback. No installs, no environment setup.
Submit + judge
Code compiles and runs against every test case with strict time/memory limits. Verdicts: AC, WA, TLE, MLE, RE, CE — exactly like a real judge.
Plagiarism + report
Cohort-wide similarity scan flags suspicious pairs. Learners get test-case-level feedback. You get a leaderboard, per-problem distribution, and per-learner audit log.
What's inside
An online-judge-grade coding platform — embedded in your LMS
30+ languages
Python, C, C++, Java, JavaScript, Go, Rust, Kotlin, Swift, PHP, Ruby, Bash, SQL, and more. Judge0 powers compilation; you pick which languages your problem accepts.
Hidden + sample test cases
Sample cases show the format and quick feedback. Hidden cases (sometimes hundreds) actually grade. Learners can never see expected output for hidden cases.
Time + memory limits
Set per-problem CPU time and memory limits. Solutions that pass logic but fail performance get a Time-Limit-Exceeded verdict — the same signal a real judge sends.
MOSS-grade plagiarism
Token-level similarity detection across the entire cohort and historical submissions. The system flags pairs above your threshold and surfaces them in review.
Custom input + scratchpad
Learners can run their own test inputs in a scratch tab without affecting their submission. Encourages experimentation without polluting the graded attempt.
Proctored mode
Optional webcam + tab-focus monitoring + paste-block + browser lockdown for high-stakes hiring rounds and certification exams.
Why teams switch from HackerRank / Codility
The math that decides budgets
Avg. spend cut from $80k/yr for a separate coding platform to $0 — included in Vacademy.
Judge0 auto-evaluates instantly; TAs only review flagged or borderline cases.
Production-tested for hackathons, hiring drives, and Olympiad-scale events.
Cohort-wide similarity passes the same bar as competitive programming judges.
Wired into the platform
Coding results drive the rest of the workflow
A code submission isn't a CSV — it's a structured event that unlocks the next module, triggers nudges, and routes hiring shortlists.
Auto-shortlist candidates above a configurable rank into the next interview round.
Unlock the next chapter when a learner clears 4 of 5 problems with full marks.
Trigger a remedial micro-course for learners stuck on the same problem 3 attempts in a row.
Push code-quality + plagiarism reports to a parent / mentor WhatsApp digest weekly.
Built for every team
Who runs coding assessments on Vacademy
Coding Bootcamps & Academies
- Run weekly DSA contests with leaderboards inside the same course
- Replace HackerRank + Codility entirely
- Track per-student code quality and plagiarism flags over a semester
Hiring & L&D Teams
- Conduct proctored hiring rounds for 1,000+ candidates in a day
- Auto-shortlist top performers into the next round
- Maintain audit-grade logs for compliance and re-grading appeals
Schools & K-12
- Teach Python / JS in NEP 2020-compliant CS courses
- Auto-grade lab assignments instead of paper-grading code printouts
- Spot plagiarism between siblings, classmates, and online sources
Customer spotlight
Code Circle — JEE / Olympiad coaching
“We migrated 3,400 weekly coding submissions from HackerRank to Vacademy. Same Judge0 quality, integrated leaderboards, plagiarism baked in — and our annual platform cost dropped from $74k to zero.”
— Founder, Code Circle
Frequently asked
Common questions from buyers
How is this different from HackerRank or Codility?+−
Coding Challenges sit inside your LMS — learners go from a video lesson to a graded code problem to a quiz to a certificate without leaving the platform. You also avoid the per-seat licensing of standalone judges; it's already part of your Vacademy subscription.
What about cheating in remote tests?+−
Proctored mode adds webcam monitoring, tab-focus tracking, paste-block, and a browser lockdown layer. Combined with cohort-wide plagiarism scanning, it's strong enough for hiring rounds and Olympiad-grade exams.
Can we add custom languages or runtime environments?+−
Yes. Judge0 supports 60+ languages out of the box. For custom environments (e.g. a specific Python + library combo, or a niche language), we can deploy isolated Docker-based runners.
Is Judge0 self-hosted or managed?+−
Production deployments use Vacademy's managed Judge0 cluster with API-key isolation per institute. For enterprise customers, we also offer fully self-hosted on-prem deployments.
Can the same problem be reused as a practice problem and an exam?+−
Yes. Problems live in a reusable bank with sample-vs-graded modes. A problem can be 'practice (with editorial)' in one module and 'graded (with hidden test cases + proctoring)' in another.
Explore the platform
Pairs well with
Stop renting a judge
Run your next coding contest on Vacademy
Bring one problem set from your existing HackerRank or Codility account. We'll migrate it, run a pilot contest with your cohort, and show you the cost + workflow comparison side-by-side.