Pedagogy-first
Not just another chatbot.
Most AI tools give you answers. Lemma's AI Tutor gives you a structured learning journey — diagnostic assessment, personalized plan, adaptive practice, and verifiable evidence of what you have learned.
Diagnostic-first approach — identifies gaps before teaching
Adaptive difficulty that responds to your performance in real time
Every practice session generates verifiable evidence for your passport
Explain React hooks
React hooks are functions that let you use state and lifecycle features...
Let me assess your current understanding of hooks...
Good! You know the basics. Let's work on custom hooks and patterns.
Learning modes
Four ways to master any skill
What does useRef return?
Tap to reveal answer
Which hook is used for side effects?
Missing await — fetch returns a Promise
What does useRef return?
Tap to reveal answer
Learning phases
A complete learning cycle.
Diagnostic
The tutor assesses your current level with targeted questions, identifying gaps and strengths before you start.
Planning
A personalized learning path is generated based on your diagnostic results, goals, and available time.
Learning
Interactive lessons with explanations, examples, and guided practice. The difficulty adapts in real time.
Testing
Assessments verify your understanding. Pass rates and scores become evidence in your passport.
Advancing
When you master a level, the tutor advances you to the next tier. Your SCI score updates automatically.
Smart adaptation
Difficulty that adapts to you.
The tutor continuously adjusts question difficulty based on your accuracy, response time, and confidence patterns. Get harder problems as you improve, and focused review when you struggle. No two learning paths are identical.
What does useEffect return?
Diagnostic assessment
The tutor starts by identifying your current level with targeted questions before building your plan.
Personalized curriculum
A custom learning path is generated based on your gaps, goals, and preferred pace.
The cleanup runs after every render.
Almost! The cleanup runs before re-renders and on unmount — not after every render. This distinction matters for subscriptions.
Real-time feedback
Get instant, contextual feedback on every answer. The tutor explains why, not just what.
React Hooks
Intermediate
Competency proof
Every completed module generates a verifiable evidence event that feeds into your SCI score.
The engine behind your learning
A conversational AI tutor with four core capabilities working together to accelerate your growth.
Adaptive difficulty
Questions get harder as you improve. The AI calibrates to your exact level in real time.
Correct! Now, can you mutate an object declared with const?
Instant feedback
Every answer gets an immediate explanation — why it's right, why it's wrong, and what to study next.
Progress tracking
XP, streaks, and mastery percentages give you a clear picture of your growth over time.
Multi-skill support
Switch between skills seamlessly. The tutor maintains separate progress profiles for each one.
Correct! Now, can you mutate an object declared with const?
Adaptive difficulty
Questions get harder as you improve. The AI calibrates to your exact level in real time.
Instant feedback
Every answer gets an immediate explanation — why it's right, why it's wrong, and what to study next.
Progress tracking
XP, streaks, and mastery percentages give you a clear picture of your growth over time.
Multi-skill support
Switch between skills seamlessly. The tutor maintains separate progress profiles for each one.
Proof from practice
Practice that counts.
Unlike generic AI chatbots, every interaction with Lemma's tutor generates verifiable evidence. Your assessment results, scores, and competency levels become permanent credentials in your passport.
Assessment results recorded as immutable evidence events
XP awarded for completed exercises and passed assessments
Competency levels automatically update your SCI score
Assessment completed
Just now
42LC
Available credits
Credits
Affordable learning credits.
Lemma uses Lemma Credits (LC) to keep learning accessible. Free-tier users receive a monthly grant, and sessions cost just a few credits. No subscriptions, no hidden fees.
Free-tier users receive monthly LC grant automatically
Tutor sessions cost 3 LC, assessments cost 2 LC — predictable pricing
Earn bonus LC by teaching others and maintaining a high SCI score
How Lemma compares.
See how Lemma's AI Tutor stacks up against traditional learning methods.
| Feature | Lemma AI | Self-study | Courses | Bootcamps |
|---|---|---|---|---|
| Adaptive difficulty | ||||
| Verifiable evidence | ||||
| Instant feedback | ||||
| Structured curriculum | ||||
| Affordable | ||||
| Verified credentials |
Personalized pace
The tutor adapts lesson difficulty to your level in real time. Always in your zone of growth.
per session
Affordable credits
Sessions cost just 3 LC. Free-tier users get a monthly grant. No subscriptions.
Proof of learning
Every completed lesson generates verifiable evidence in your passport. Skills backed by proof, not claims.
Getting started
Start learning with peers
Join Lemma to find skill-matched partners, complete sessions, and build a verified portfolio — all for free.
Maya R.
94% match · React & Python
Build with our API
Integrate Lemma's skill verification into your hiring pipeline, LMS, or talent platform with our REST API and SDKs.
Start proving what you know.
Early access is rolling out for individuals and teams. No credit card, no PDFs — just the things you made, made visible.