Sunday, 06 September 2026
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What a language model is really doing

Artificial intelligence from zero · lesson 4 of 12

Lesson 4 needs a free account

The first 3 lessons of every track are open to everyone. From here on Yanjye has to remember where you stopped, mark your exam and put your name on the certificate — so it needs to know who you are.

This lesson: Explain in your own words why a language model can be fluent and wrong at the same time.

  • Free — the lessons and the exam never cost anything
  • Your progress is saved across every device
  • Pass the exam and earn a certificate anyone can verify

Or go back to Artificial intelligence from zero and finish the free lessons first.

All lessons in this track

  1. 1
  2. 2
  3. 3
  4. 4
    What a language model is really doing ~20 min account needed
  5. 5
  6. 6
    Writing a prompt that actually works ~20 min account needed
  7. 7
    When AI is confidently wrong ~20 min account needed
  8. 8
  9. 9
    What never to paste into an AI tool ~15 min account needed
  10. 10
  11. 11
  12. 12
    AI careers, and where to go from here ~15 min account needed
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