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Free
$0 forever
  • ✓ All 7 Foundations modules (50+ lessons)
  • ✓ Foundations flashcards
  • ✓ Interactive coding exercises
  • ✓ 10 learning tutor messages per day
  • ✗ Classical ML curriculum (Part 1)
  • ✗ AI Engineering curriculum (Part 2)
  • ✗ Open Source LLMs curriculum (Part 3)
  • ✗ Interview prep + interview AI tutor
  • ✗ Certificates of completion
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Pro
$49 $49 / month
  • ✓ Everything in Free
  • ✓ Classical ML curriculum (Part 1)
  • ✓ AI Engineering curriculum (Part 2)
  • ✓ Open Source LLMs curriculum (Part 3)
  • ✓ Flashcards for all modules
  • ✓ Unlimited learning AI tutor
  • ✓ Certificates of completion
  • ✗ Interview prep + interview AI tutor
Get Pro

Cancel anytime. No commitment.

Pro+
$99 $99 / month
  • ✓ Everything in Pro
  • ✓ Interview prep (629 problems + ML system design)
  • ✓ Interview AI tutor
  • ✓ Higher rate limits
Get Pro+

Cancel anytime. No commitment.

Common questions

What's included in Foundations?

Foundations covers Python, Software Design, Data Systems, Numerical Computing, Probability & Statistics, and APIs & Async — 7 complete modules with 50+ lessons, interactive coding exercises, and flashcards. It's free, no credit card required.

What is the learning AI tutor?

The learning AI tutor is a context-aware assistant that knows which lesson you're on. Ask it to explain a concept, debug your code, or give you a harder challenge. Free accounts get 10 messages per day. Pro and Pro+ get unlimited access.

What is the interview AI tutor?

The interview AI tutor is specialized for technical interview practice. It gives feedback on your problem-solving approach, walks through ML system design, and helps you prepare for the kinds of questions you'll face at top companies. Available on Pro+ only.

When does Part 1 launch?

Classical ML (Part 1) is in active development. Pro and Pro+ subscribers will get access as lessons ship — you won't be charged for content that isn't ready yet.

Can I cancel?

Yes, anytime. Monthly subscribers keep access until the end of their billing period. Annual subscribers can cancel and won't be charged for the next year.