# Planner

## Definition
In the Hierarchy multi-agent pattern, the Planner is a smart model (often Opus or similar frontier model) that breaks down the user's goal into small, atomic, focused steps and distributes them across worker agents.

## Role in Multi-Agent Hierarchy
- Receives the user's high-level goal
- Decomposes it into discrete, verifiable tasks
- Assigns tasks to appropriate Worker agents based on specialization
- Coordinates the workflow but does not execute the tasks itself

## Key Properties
- Typically uses a more capable model (e.g., Opus) for planning
- Creates a dependency graph that forces Workers to wait for their input
- Can be the same model as Worker but different model preferred for Validator

## Related Concepts
- [[Multi-Agent Hierarchy]]
- [[Worker]]
- [[Validator]]