This page first makes the judgment clear, then explains when it applies, how to start, and where human professional responsibility is still required.
Use one question to distinguish them first
If you can write out every step, every branch, and every exception in advance, prioritize a workflow. If inputs change often and you need to understand the task from materials, ask about gaps, choose tools, or adjust the path, then it's worth bringing in an Agent's judgment.
View them in the same table
| Decision point | Workflow | Agent |
|---|---|---|
| How the next step gets decided | According to preconfigured rules and branches | Propose or select the next step based on the task, context and available tools |
| What it does best | Stable, repeatable, verifiable processes | Material comprehension, follow-up questions, planning and uncertain tasks |
| Main risks | Insufficient rule coverage, rigid processes | Judgment drift, unauthorized calls, unverifiable outputs |
| Enterprise control methods | Rules, permissions, nodes and fallback | It also needs boundaries, plus constraints on plans, tools, sources, and human approval |
The most common combination
- The workflow handles triggers, permissions, records, timeouts, approvals and irreversible actions.
- The Agent is responsible for understanding emails, meetings, documents and customer questions, filling gaps and preparing candidate results.
- The business owner checks key facts, scope, pricing and commitments, then decides whether to continue.
When not to use an Agent
If a task has a fixed input format, stable steps and clear rules, ordinary automation is often easier to test, explain and maintain. Handing a deterministic process to a model just to "look intelligent" adds unnecessary uncertainty.
Enterprise acceptance should not just look at whether answers are polished
At minimum, check whether the task is complete, whether the sources support the key claims, whether permissions are correct, whether exceptions can be taken over, and whether the team can reuse this approach in the next task.