Pay only for what you use
Start free with $5 in credits. Add more as you go — no commitment, no subscription. You only pay for what you use.
How credits work
Add credits to your account
Purchase credits in any amount from $5 to $250. You only pay for what you use.
Use AI-powered features
Each AI interaction costs 1-10 cents depending on complexity. Most cost just 1-3 cents.
Credits never expire
Your balance stays until you use it. No monthly reset. No pressure.
$5 free trial for new users
Try all AI features without adding a payment method. Use up to $5 in credits to explore the platform.
What your credits unlock
Every AI-powered feature in Ludwitt. Most interactions cost just pennies.
AI Tutor
Get personalized explanations for any problem
Adaptive Math
AI-generated problems at your skill level
Reading Analysis
Comprehension questions and vocabulary help
Writing Feedback
AI grading and improvement suggestions
Latin & Greek
Classical language translation and grammar
Always Free
- Practice problems (non-AI)
- Progress tracking
- Achievements & XP
- Leaderboards
Common questions
Looking for university or school licensing?
Per-seat volume pricing, SSO & LTI integration, analytics dashboard, and dedicated support for educational institutions.
View Institutional PricingAre you an educator?
Apply to teach on Ludwitt University. Create learning paths, mentor students, review deliverables, and hold office hours.