Track 0: AI Foundations (No Code), How LLMs Work

Tokens and the Context Window

Estimate tokens for a document and know when it won't fit.

Status: Live on YouTube Enroll on Udemy BeginnerVideo lessonAbout 12 min

Part of Use AI at Work (9 of 75), AI for Students (9 of 53) and AI Strategy for Leaders (9 of 41)

12 min

Published 17 October 2026 in AI Foundations (No Code)

Tokens and the Context Window

Estimate tokens for a document and know when it won't fit.

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AI for Beginners (No Code): Understand and Use AI

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In this module

  1. What Is a Large Language Model?
  2. Tokens and the Context Window
  3. How LLMs Write: Next-Token Prediction, Temperature, Sampling
  4. How ChatGPT Was Made: Pre-training, Fine-tuning, RLHF
  5. Reasoning Models: What "Thinking" Really Means
  6. The Model Landscape: Closed vs Open Weights, Sizes, Benchmarks

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