TL;DR

Most AI agents fail because they try to do too much in one shot. The best AI systems break work into Planning and Execution stages. This guide shows you the 5 proven patterns used by Anthropic, OpenAI, and GPT-4 — and how to build them yourself

Why Most AI Agents Fail

You've probably experienced this:

  • Ask an AI to "setup automations for you" → it hallucinates steps

  • Ask it to "process this data" → it misses context

The problem isn’t the AI model, its the architecture

Standalone LLMs have no memory, no tools, and no coordination. They work in isolation, making decisions without full context

“Agents begin their work with interactive discussion with the human user. Once the task is clear, agents plan and operate independently.”

Anthropic, “Building Effective Agents“

The 5 AI Agent Patterns You Need to Know

Based on research from Anthropic, OpenAI, LangChain, and production AI systems, here are the patterns that work:

1. Prompt Chaining

What it is: Break complex tasks into sequential steps. Each step's output becomes the next step's input

When to use it:

  • Data Processing pipelines

  • Multi-Step Transformations

  • Document Analysis Workflows

Example:

A user uploads raw data → AI extracts key fields → cleans the data → analyzes trends and generates a report. Each step builds on the last

Prompt Chaining in Lamatic: API Request → Extract Data → Clean Data → Generate Report → Response

2. Routing

What it is: Use an AI to classify intent and route to specialized handlers

When to use it:

  • Customer support (route by intent)

  • Content processing (route by type)

  • Multi-purpose assistants

Example:

Customer Sends “I want to upgrade my plan“ → Classifier detects “sales” intent → Routes to Sales agent (not Support or Technical)

Routing in Lamatic: Chat Trigger → Intent Classifier → Condition branches to Sales Agent, Support Agent, or Technical Support

3. Orchestrator - Workers

What it is: A central AI breaks down tasks and delegates to specialized worker agents

When to use it:

  • Complex projects with multiple components

  • Research and synthesis tasks

  • Code generation with multiple files

“The orchestrator dynamically breaks down tasks, delegates them to worker LLMs, and synthesizes their results.”

OpenAI

Example:

User asks for a blog post → Orchestrator assigns: Research Agent (gather facts) → Writer Agent (draft content) → Editor Agent (polish) → Synthesize Results

Orchestrator-Workers in Lamatic: API Request → Orchestrator → Branching to Writer Agent, Editor Agent, Research Agent → Synthesize Results → Response

4. Plan and Execute

What it is: First create a complete plan, then execute step by step.

Why it is powerful:

  • Users can approve before Execution

  • Each step of Execution has the “Plan”

  • Results are predictable

This is the pattern used by:

  • Cursor AI

  • Devin(Cognition)

  • GPT Pilot (33k GitHub Stars)

Example:

User says "Book my tickets to Paris" → Planner creates plan → Condition checks if clarification needed → If clear, shows plan for approval → User confirms → Executes step by step.

Plan-and-Execute in Lamatic: Chat Trigger → Planner → Condition → Ask Questions OR Show Plan → Execute Plan → Response

5. Evaluator - Optimizer

What it is: Generate output, evaluate it, refine until it meets criteria

When to use it:

  • Content that needs quality checks

  • Code that needs testing

  • Outputs that need validation

Example:

AI generates content → Evaluator scores it (1-10) → If score < 8, Refiner improves it with feedback → If score ≥ 8, output passes quality check.

Evaluator-Optimizer in Lamatic: API Request → Generator → Evaluator → Condition → Quality Passed OR Refiner → Refined Output → Response

The Secret: Combine Patterns for Maximum Power

The best AI systems don't use just one pattern — they combine them:

Stage

Pattern

Purpose

Intent

Routing

Understand user wants

Planning

Evaluator-Optimizer

Clarify and confirm plan

Execution

Orchestrator-Workers

Generate each component

Validation

Prompt Chaining

Check and refine output

“Start with the simplest solution and only increase complexity when necessary“

Anthropic

Key Takeaways

  1. Don't use bare LLMs — they lack memory, tools, and coordination

  2. Break complex tasks into stages — Planning → Execution

  3. Validate before output — catch errors early

  4. Start simple, add complexity as needed

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