𝗕𝗲𝘆𝗼𝗻𝗱 𝗧𝗵𝗲 𝗔𝗴𝗲𝗻𝘁𝗶𝗰 𝗟𝗼𝗼𝗽: 𝗧𝘀 𝗢𝗿𝗰𝗵𝗲𝘀𝘁𝗿𝗮𝘁𝗼𝗿 𝗣𝗮𝘁𝘁𝗲𝗿𝗻
Most people build multi-agent systems using an agentic loop.
The LLM acts as the brain and the control flow. It thinks, calls a tool, observes, and repeats. This works for exploration, but it brings three big problems:
- Unpredictability: A task might take 3 calls or 9 calls. You never know the latency or the cost until it runs.
- Non-determinism: The same question follows different paths every time. This makes it hard to trust agents with side effects like placing orders.
- Poor observability: Debugging requires replaying messy transcripts of reasoning and tool calls.
If you know your agents and their functions, use the Orchestrator pattern instead.
The Orchestrator separates decision from execution. It uses three distinct phases:
- Route: One LLM call picks the tools. It does not answer the user.
- Execute: Ordinary TypeScript code runs the agents. No LLM is used here.
- Synthesize: One LLM call turns the data into a natural response.
This pattern creates three execution modes:
• Single: One agent handles the query. • Parallel: Multiple independent agents run at once using Promise.all. This saves time. • Sequential: Agents run in order. Each step uses results from the previous step.
By using this approach, you get:
- A plan you can trust: You see the execution plan before any code runs.
- Faster speeds: Parallel execution handles multiple lookups at once.
- Better testing: You can unit test the execution phase without an API key.
- Predictable costs: Every request uses exactly two LLM calls.
Use the agentic loop for exploration. Use the orchestrator for production systems that need speed and reliability.
Optional learning community: https://t.me/GyaanSetuAi