Why teams choose Charvak
The only placement OS with HMAC-verifiable proof, real code execution in 4 languages, 6 compliance jurisdictions, and a unified recruiter dashboard — all in one platform.
Charvak vs the alternatives
Every competitor does one thing well. Charvak connects all of them into one verifiable pipeline — from assessment to placement, with cryptographic proof at every step.
| Feature | Charvak | HackerRank | TestGorilla | VIVA360 |
|---|---|---|---|---|
| Real code execution (deterministic test cases) | ✅ | ✅ | ❌ AI only | ❌ |
| Languages supported | 5 (Py, JS, Java, TS, SQL) | Python, JS, Java | Text-only | None |
| HMAC-verifiable certificates | ✅ | ❌ | ❌ | ❌ |
| AI screen agent (2-phase chat) | ✅ | ❌ | ❌ | Text only |
| Recruiter dashboard + hire tracking | ✅ | ❌ | ❌ | ❌ |
| Dean-ready placement reports | ✅ | ❌ | ❌ | ❌ |
| India-DPDP compliance | ✅ | ❌ | ❌ | ❌ |
| 6 compliance jurisdictions | ✅ (DPDP, GDPR, NYC, EU AI, PIPL, PDPA) | GDPR only | GDPR only | ❌ |
| 4 data residency regions | ✅ | ❌ | ❌ | ❌ |
| 8 payment currencies | INR, USD, GBP, EUR, AED, SGD, AUD, JPY | US-centric | ✅ | ❌ |
| Free tier (candidate-facing) | ✅ No login for most | Limited | Limited | ❌ |
| Batch/cohort leaderboards | ✅ | ❌ | ❌ | ❌ |
The 3 differentiators that matter
Why teams pick Charvak over the alternatives — with proof, not promises.
1. Real code execution, not AI opinions
The difference between "AI gave them 85" and "85% of test cases passed."
Every coding assessment on Charvak is tested against deterministic test cases — real stdin and expected stdout, executed via Judge0 CE. A candidate's score of 85 means 85% of test cases passed. Not an AI guess, not a rubric interpretation, not a hunch.
- Every coding problem has 3 test cases (input + expected output)
- Code is executed in a sandboxed environment — no hidden libraries, no AI scoring
- Result is reproducible: rerun the same code, get the same score
- Every certificate names the exact task classes tested (Arrays, Recursion, Strings, etc.)
- The score can be defended to a hiring committee in under 30 seconds
2. HMAC-verifiable proof, not vendor gatekeeping
Your hiring manager verifies a candidate in 5 seconds — no login, no phone call, no email thread.
Every Charvak certificate has a cryptographic HMAC-SHA256 hash. That hash is the entire certificate — score, task classes, issue date, candidate identity — signed into a single verifiable string. Employers check it at a public URL with no vendor involvement.
- Public verify URL:
charvakit.com/api/career-certification/verify/{hash} - Any change to the cert invalidates the hash — tampering is detectable
- Hiring manager verifies the score in 5 seconds without a Charvak account
- The certificate survives the candidate's career — no expiry, no renewal
- Every verifier sees the exact task classes tested, not just the score
3. Built in India, ready for the world
The only placement OS that plugs into both Indian DPDP and global enterprise compliance from day one.
Most assessment platforms are built for the US market and bolt on GDPR as an afterthought. Charvak is India-DPDP native from day one, with compliance coverage for 6 jurisdictions and data residency in 4 regions — all live, not roadmap.
- 6 compliance jurisdictions: India DPDP, GDPR, NYC Local Law 144, EU AI Act, PIPL (China), PDPA (Singapore)
- 4 data residency regions on request: Singapore (default), US-East, EU-West, UK
- 8 payment currencies: INR, USD, GBP, EUR, AED, SGD, AUD, JPY
- SOC 2 Type II roadmap published (Q3 2027)
- Subprocessors list, DPA template, security questionnaire — all on request
See Charvak in action in 30 seconds
5 live demos, no login required. Scorecard, coding cert, compliance, AI screen agent, session detail.
🎬 Open the demo See pricing