Ask in the moment
The learner can ask while the problem and context are still visible.
OUR VISION
A capable, engaging AI tutor beside every learner.
We turn the judgment of an expert tutor into language diagnostic assessment technology.
See why it matters ↓THE PROBLEM
Do you know what a student is thinking while solving a problem?
It is hard to tell whether a learner truly understands or is simply spending time at a desk. Students who do not know what to study next feel just as stuck.
FIELD INTERVIEW
We followed one learner's study process.
- 01
Works through a problem set.
- 02
Checks the answer and retries the questions that caused difficulty.
- 03
Uses a dictionary to translate alone instead of reading the explanation.
- 04
Plans to ask a teacher later, then often forgets.
“I don't read the explanations. The paraphrasing makes them even more confusing.”Student who took the November 2025 CSAT · Gyeonggi-do
OUR DISCOVERY
Solving a problem is not the same as knowing and understanding it.
When questions are postponed, the reason for the mistake remains unresolved. Study time adds up, but skills do not improve.
OUR BEGINNING
An expert tutor knows why a learner is stuck.
After teaching the same learners over time, we found that knowing the learner—not merely knowing the answer—is what makes instruction easy and engaging. DiagniaLab began by turning that judgment into a system.
OUR ANSWER
Tutoring starts the moment an answer reveals a gap.
Find the real cause
We distinguish vocabulary, syntax, comprehension, task intent, time pressure, and mistakes.
Build understanding
Questions and hints guide the learner to an answer instead of revealing it immediately.
Check understanding
The tutor checks what the learner understood and explains again in a different way when needed.
FIRST PRODUCT · LISCIT
From ‘I'll ask later’ to ‘I understand it now.’
LISCIT is our first product: an AI tutor that sees the problem, understands its context, and stays until the learner can explain the answer.
- Sees the problem being solved
- Diagnoses why the learner is stuck
- Teaches through questions and hints
- Learns more about the student over time
HOW IT WORKS
Technology that helps AI understand each learner.
Language diagnostic assessment turns learning traces into information an AI tutor can use.
Define
Q-matrices describe the language skills and cognitive attributes required by each item.
Infer
Cognitive diagnostic models estimate what each learner has and has not mastered.
Tutor
The AI changes its questions, explanations, and next problems using that learner information.
PROOF OF EXECUTION
Built in the field, ready to scale.
Selected for Korea's Re-Challenge Success Package
Validation partners: one high school and six academies
LISCIT CSAT English AI tutor
OUR VISION
A capable, engaging AI tutor beside every learner.
We are looking for partners and investors who want to build the next standard for personalized learning with us.