Plan-and-Execute Pattern for Enterprise Agents
The Plan-and-Execute pattern separates planning from execution: the agent first builds a complete plan for achieving the goal, then executes each step. It outperforms ReAct on long-horizon tasks where the overall approach matters as much as individual steps.
What Is Plan-and-Execute?
The Plan-and-Execute pattern separates the planning phase from the execution phase. The agent first builds a complete plan for how it will achieve the goal — identifying all the steps it will take and in what order — then executes each step sequentially. This is distinct from ReAct, which interleaves reasoning with action at each step.
When to Use It
- Long-horizon tasks with many steps where the overall approach matters
- Tasks where early steps must be completed correctly before later steps can proceed
- Contexts where you want human review of the plan before execution begins
- Debugging complex workflows where you need to see the agent's full approach upfront
When NOT to Use It
- Exploratory tasks where the agent can't know the full plan in advance
- Short tasks (2–3 steps) where planning overhead isn't justified
- Dynamic situations where conditions change frequently during execution
How It Works
Phase 1 (Plan): The agent receives the goal and produces a structured plan — a numbered list of steps with the action for each step. Phase 2 (Execute): The agent works through the plan step by step, reporting progress. If a step fails, the agent can re-plan for the remaining steps rather than abandoning the whole task.