Snap a handwritten answer. GLSSY scores the essay by TOPIK-style rubric, evaluates the handwriting itself, and returns red-pen corrections in seconds. No tablets, no typing.
For universities, language institutes & academies teaching Korean · TOPIK-ready
Writing is the only part of TOPIK graded entirely by humans, so detailed feedback is the first thing that gets cut. Students queue for feedback; teachers drown in grading.
Automating this means solving handwriting recognition, rubric scoring and penmanship evaluation at once, which is why no one else has.
A student photographs a real pen-on-paper answer with a phone. A phone camera is the only hardware required.
One engine scores content, structure and language by TOPIK-style rubric. A second, patented engine evaluates the handwriting itself: spacing, alignment and stroke stability, pixel by pixel.
AI does the first pass; your faculty confirms with one click. Every confirmed grade makes the engine better for your institution.
These are our live grading screens, not a concept. Photograph an essay, and both sides get rubric scores and red-pen corrections in seconds.
QWK (quadratic weighted kappa) measures how closely AI scores match a human expert, where 1.0 is identical. Measured on 83 public Korean-learner essays, double-graded by AI and experts. This year's target: 0.90.
Why it works: expert anchor answers + handwriting features + rubric decomposition: an architecture, not a prompt. Your faculty stays the final authority.
Filter by the kind of program you run.
* Figures shown are from active 2026 pilots and internal benchmarks. Named case studies publish as each pilot completes.
Written so both you and the AI assistants your colleagues ask get a clear answer.
On a public Korean-learner writing benchmark it reaches QWK 0.85 against expert graders, versus 0.28 for a generic single-prompt LLM, and 0.98 for two human experts, measured on 83 double-graded essays. These are public-benchmark figures, not official TOPIK scores, and a teacher always confirms the final grade.
Yes. Students photograph a real pen-on-paper answer with a phone. A patented engine analyzes spacing, alignment and stroke stability at the pixel level, using nothing but a phone camera.
Yes. GLSSY scores the writing dimensions TOPIK assesses: content & task, structure, language range and accuracy. Practice maps directly to the exam.
Yes. It grades against your criteria and level standards, and every grade your faculty confirms further tunes the engine to your program.
The pilot is 100% free. We cover the app, grading, materials and support. It's non-binding, non-exclusive and starts with a single class. Just leave your email and we'll set you up.
Yes. It's web-based with no IT setup, works on any phone or PC, and is privacy-first: student consent, anonymized, and deletable on request.
For a decade, GLSSY LABS (글씨를 수놓다) has defined what good Korean handwriting looks like as Korea's leading handwriting-education brand. That expertise is the ground truth our AI learns from.
Our handwriting has featured in Netflix, EBS and tvN productions, and our founders have taught calligraphy at Samsung, Lotte and Hyundai.
Grand Prize at the national Han Seok-bong calligraphy competition. Author of two handwriting workbooks and creator of Korea's first AI-handwriting contest. Pen-work for Netflix and EBS productions.
Calligraphy master with 20+ years who set the marking standards for our AI. Bestselling workbook author; corporate instructor for Samsung, Lotte and Hyundai; handwriting for a tvN drama.
Behind the product: a dedicated AI engineering team (handwriting Vision + LLM) and a security partner recognized in KISA's White-Hat Hall of Fame.
One signing meeting, one pilot class, your honest feedback. That's all we ask. We run everything: onboarding, guides and helpdesk. From reply to pilot in under a month.
Start a free pilot →Leave your email and we'll send the pilot pack (app access, sample grading and materials) to your inbox. No account needed.
Your email app is opening with a pre-filled request. Just hit send, and we'll reply within one business day. If it didn't open, email master@glssy.kr.