Foundation ArcModule 01
Claude Fundamentals
Understand what Claude is, who built it, how it thinks, and the core concepts behind large language models. Build the mental model you need before writing a single prompt.
4 lessons~2 hoursBeginner
Progress0%
What you'll learn
Understand what Claude is and who created it
Learn about Anthropic's Constitutional AI approach
Know what sets Claude apart from other AI models
Understand the three Claude model tiers and their distinct capabilities
Know the cost, speed, and quality tradeoffs between Opus, Sonnet, and Haiku
Learn how to switch models inside Claude Code and when to use each one
Understand the opusplan strategy for maximum efficiency
Understand what tokens are and how to estimate token counts