AI Explained. The clearest non-hype explanation of why o1 (and by extension o3, R1, Claude extended thinking) is trained for correctness instead of next-token prediction, and what that means for how you talk to it. Watch this and the article's "stop saying think step by step, start writing the spec" advice stops feeling arbitrary.
Treat the o1 terminology as historical context. The useful lesson is the prompting shift toward tight task specifications; current model names, product limits and best practices will keep changing.
Understand why reasoning-model prompts should specify the problem, constraints and success criteria instead of asking for visible chain-of-thought.
Basic prompting experience and familiarity with model names such as o-series, Claude extended thinking and R1.
Continue through the same learning path with the next curated companion videos.