For students writing with AI
Catch AI's mistakes before your
teacher does.
Chekkai verifies every claim and citation in your AI-assisted paper, checks which sources are actually real, and gives you a fix-list — before you hit submit.
CHEKKAI // ANALYSIS ENGINE v1.0
INPUT “A 2021 Stanford study (Lee et al.) found 80% of students...”
SCANNING_
TRUST SCORE23/ 100
FIX NEEDEDFINDINGS
✗Citation "Lee et al., 2021" — source not found
✗Statistic "80% of students" — unsupported
✓Main argument — well supported
SOURCES CHECKED8
Every claim
Fact-checked
Citations
Verified real or fake
~10 sec
Per report
Free
First paper
// HOW IT WORKS
Submission-ready in 3 steps
01
Paste your paper
Your AI draft or finished essay — paste the text or upload a PDF/DOCX.
02
We check every claim & citation
Chekkai verifies each factual claim and citation against the live web.
03
Get your fix-list
See what's false, what's unsupported, and which citations don't exist — before you submit.
// FEATURES
Built to catch what AI gets wrong
⊙
Fact & Claim Verification
Every factual claim in your paper cross-checked against real sources. Get a trust score, evidence, and the exact sentences to fix.
Trust ScorePer-claim VerdictSource Links
◆
Citation Reality Check
AI invents citations that look real but don't exist. Chekkai confirms each source is real and tells you what it actually says.
Real vs. FakeSource Exists?No Hallucinated Cites
// PRICING
Simple Pricing
Free
$0
1 paper / mo · up to 25,000 chars
Papers / month1
Max length / paper25,000 chars
Fact & claim verificationUp to 4
Citation reality check✓
Check history✓
PDF & Word upload✓
AI Detection✗
Plagiarism check✗
No subscription
Single paper
$2.99/ paper
Up to 50,000 chars · 40 claims
Papers / month1 (one-off)
Max length / paper50,000 chars
Fact & claim verificationUp to 40
Citation reality check✓
Check history✓
PDF & Word upload✓
AI Detection✗
Plagiarism check✗
★ Recommended
Unlimited
$6.99/ mo
Unlimited, all semester
Papers / monthUnlimited
Max length / paper50,000 chars
Fact & claim verificationUp to 40
Citation reality check✓
Check history✓
PDF & Word upload✓
AI Detection✗
Plagiarism check✗
Master
$39/ mo
Unlimited + AI detection & plagiarism
Papers / monthUnlimited
Max length / paper150,000 chars
Fact & claim verificationUp to 50
Citation reality check✓
Check history✓
PDF & Word upload✓
AI Detection✓
Plagiarism check✓
// GET STARTED
Stop submitting AI's mistakes
Check your next paper for made-up facts and fake citations — free. No sign-up required to try.
Check my paper — free