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Verified 2026-08-10

Planning and multi-step reasoning

**Planning** breaks a goal into steps. **Multi-step reasoning** is the model (or system) working through those steps—sometimes with tools—before a final answer.

What it is

Planning breaks a goal into steps. Multi-step reasoning is the model (or system) working through those steps—sometimes with tools—before a final answer.

Why it matters

Single-shot answers fail at research, ops, and coding tasks. Plans plus verification beat one long confident paragraph.

How it works (plain)

  1. Clarify goal and constraints
  2. Draft a plan
  3. Execute step-by-step with tools
  4. Check intermediate results
  5. Revise plan when evidence changes

Cross-link classical search/planning (Course 06).

Everyday example

Cooking a new recipe: mise en place, timed steps, taste-and-adjust—not dumping every ingredient at once.

Try it

Take a goal (“publish a help article”). Write a 6-step plan with one human approval gate.

Myths

⚠️ Myth: Asking for “step by step” always yields truth.
✓ Reality: Fluent steps can still be wrong—verify with tools/sources.
⚠️ Myth: More steps always help.
✓ Reality: Sprawl without checks wastes tokens and increases error spots.

Sources