Start with a complete Free plan. Upgrade to Pro for the full problem library, every course, 1M tokens / day with LDS Mentor, and complete Arcade access.
Prices shown in USD
Build your foundation
Free includes
Unlock the complete platform
Billed monthly · Billed in USD
Eligible international cards appear at checkout
LDS Mentor is currently available only to members age 18 or older. This restriction reflects age-related requirements for the external AI services that power Mentor. Members under 18 keep every other Pro benefit.
Everything in Free, plus
Core LDS learning and current-awareness tools stay open.
Monthly prizes apply to News Games only. Read the competition rules.
More practice, deeper coaching, and complete progression.
SQL VISUALIZER
Move through the query one step at a time and watch the result update as each clause runs.
LDS MENTOR
Watch Learn Mode guide the reasoning, then see Interview Mode switch to a direct pattern-first response.
See exactly what changes when you upgrade.
| Feature | Free | Pro |
|---|---|---|
| Graded problems | 250 | 1,625 |
| SQL / Python | 126 / 124 | 816 / 809 |
| Industry domains | Free datasets | 15 domains |
| Course access | 7 full + 10 previews | All 17 full |
| LDS Mentor | 10 messages / day | 1M tokens / day |
| Code visualization | 5 / day | Unlimited |
| News and blog audio | 10 / day | Unlimited |
| Quick Recall | All 556 cards | All 556 cards |
| Arcade | Guest + account checkpoints | All 831 levels |
Clear answers before you choose a plan.
Yes. Free includes 250 graded problems, 7 complete courses, the first module of every Pro course, 10 Mentor messages and 5 visualizations each day, all 556 Quick Recall cards, career paths, AI News, Blog, History Archive, and News Games. No credit card is required.
Pro adds 1,375 graded problems, all 15 industry domains, every module in all 10 Pro courses, 1M tokens / day with LDS Mentor, unlimited visualization and audio access, plus all 831 Arcade levels.
Yes, if they meet the current age requirement. Signed-in Free members age 18 or older receive 10 Mentor messages each day and can use both Learn Mode and Interview Mode. Pro includes 1,000,000 tokens per UTC day, with a 20,000,000-token calendar-month limit. Both modes draw from the same token budget.
Yes. Members age 13 through 17 can use the courses, practice tools, Arcade, visualizations, and every other benefit included with their plan. LDS Mentor is currently unavailable until age 18 because age-related requirements apply to the external AI services that power it.
Arcade opens with guest levels, adds more checkpoints with a free account, and reserves the final progression for Pro. Pro includes advanced levels, bosses, badges, and complete leaderboard progression. Arcade does not offer monthly prize money.
The 10 Pro courses are Probability for Data Scientists, Machine Learning Fundamentals (scikit-learn), SQL Window Functions, A/B Testing & Experimentation, Building RAG Systems & Vector Search, Building AI Agents, AI Evals: Test, Measure & Ship LLM Apps, Fine-Tuning LLMs: Make the Model Yours, Context Engineering & AI Workflows, Production LLM Systems. Module 1 of each is available on Free so you can preview the teaching style before upgrading.
Pro costs $14.99 monthly or $119.99 annually in USD. Razorpay shows the recurring payment methods eligible for your bank, issuer, country, device, and mandate amount. Availability can vary.
Yes. Cancel from your account settings. Access continues through the paid period already confirmed for your subscription.
250 graded problems and 7 complete courses are ready now.
