TL;DR
- PAITS — AI generates a personalized course on any topic in < 5 minutes. Free (10 courses/month).
- Khan Academy — Free, non-profit STEM platform with K-12 coverage, interactive exercises, and mastery tracking. Fully free, no limits.
- Best for any topic, any level: PAITS
- Best for STEM practice and mastery in K-12 curriculum: Khan Academy
Introduction
Khan Academy is one of the most beloved educational platforms ever built — free, high-quality, and genuinely helpful for millions of learners. PAITS approaches education from a completely different angle: instead of a fixed curriculum, it generates a new course for any topic you describe.
Both are free. Both help you learn. The difference is in scope and depth.
Head-to-Head Comparison
| Feature | PAITS | Khan Academy |
|---|---|---|
| Cost | Free (10/mo) · Pro $29/mo | 100% free, unlimited |
| Subject coverage | Any topic | K-12 STEM + test prep |
| Interactive exercises | Inline quizzes | Extensive problem sets + hints |
| Mastery tracking | No | Yes (unit mastery system) |
| Content type | Notes + slides + video | Video + exercises + articles |
| Personalization | Difficulty-adaptive | Adaptive exercises |
| Adult learning | Strong | Limited (K-12 focus) |
| Professional topics | Yes | No |
When PAITS Wins
Topics outside Khan Academy's catalogue. Khan Academy covers K-12 well — but not professional software development, cloud computing, finance, design, or any graduate-level subject. PAITS covers all of these.
Adult and professional learners. Khan Academy is designed primarily for school-age learners. PAITS generates content calibrated for adult professionals who want to learn new fields quickly.
Speed. A PAITS course is ready in minutes. Khan Academy requires navigating to the right unit and working through sequential content.
When Khan Academy Wins
Mathematics mastery. Khan Academy's interactive problem sets, hints, and mastery tracking for mathematics are genuinely best-in-class. For practicing maths problems, no AI-generated content replicates this.
Zero cost, zero limits. Khan Academy is 100% free with no monthly generation cap. For students who need continuous access across many subjects, this is a meaningful advantage over PAITS's 10 free generations per month.
K-12 curriculum alignment. Khan Academy tracks national curriculum standards and provides structured progressions. PAITS generates content but does not align to specific curricula.
Verdict
For K-12 STEM with interactive exercises: Khan Academy is unmatched and free. For learning any topic — professional, niche, adult-level, or beyond K-12 — PAITS fills the gap Khan Academy leaves.
Try PAITS free → paits.ai