Building Simple LLM Applications

Understand how APIs, chat flows, memory, orchestration, and developer patterns come together to create powerful language‑model applications.

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Overview

Simple LLM applications typically follow predictable building blocks: calling model APIs, structuring chat flows, adding memory when needed, and orchestrating the logic that links everything together. This page breaks down these elements in an easy‑to‑understand way.

Key Concepts

LLM APIs

APIs provide access to models via simple inputs and structured outputs. Common operations include prompts, completions, and streaming responses.

Chat Flows

Chat interactions follow a message‑based pattern. Developers control system instructions, user messages, and model outputs to shape behavior.

Memory

Memory allows models to keep track of previous conversations or context, ranging from simple local history to vector‑based retrieval.

Orchestration

Logic that coordinates prompts, tools, retrieval, routing, or multi‑step workflows. Frameworks often help simplify orchestration.

How It All Fits Together

1

Define Use Case

Clarify what the model should accomplish.

2

Design Chat Flow

Plan messages, instructions, and roles.

3

Add Memory

Determine if context persistence is needed.

4

Orchestrate Logic

Connect all components and handle edge cases.

Use Cases

Customer Support Bots

Flow‑driven chat experiences with memory for history.

Interactive Tutors

Personalized learning experiences using retrieval.

Task Automation

Combine model reasoning with tools or APIs.

LLM App Patterns Comparison

Prompt Only

Simple, fast, stateless. Great for single‑shot tasks.

Chat‑Based

Multi‑turn interactions. Medium complexity.

Tool‑Orchestrated

Most capable. Includes memory, agents, and workflow logic.

FAQ

Do I need memory for every LLM app?

No. Many apps work fine without memory. Add it only when multi‑turn context is required.

What’s the simplest way to get started?

Start with a single API call using a well‑structured prompt or simple chat format.

When should I use orchestration frameworks?

Use them when your app involves multiple tools, retrieval, or multi‑step workflows.

Start Building Your LLM App Today

Use these foundations to create intelligent, flexible, and powerful AI experiences.

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