> ## Documentation Index
> Fetch the complete documentation index at: https://docs.navtalk.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# Overview

> Learn best practices for building effective system instructions and prompts for GPT-realtime models

Effective prompt engineering is crucial for creating high-quality interactions with GPT-realtime models. The `prompt` field in the `realtime.input_config` message serves as the system prompt that defines your digital human's role, behavior, tone, knowledge, and constraints.

<CardGroup cols={2}>
  <Card title="Best Practices" icon="lightbulb" href="/api/real-time-digital-human-api/prompt-engineering/best-practices">
    General techniques for effective prompt engineering: iteration, bullet points, examples, precision, language control, variety, and emphasis.
  </Card>

  <Card title="Building Effective Prompts" icon="wand-magic-sparkles" href="/api/real-time-digital-human-api/prompt-engineering/building-prompts">
    Complete guide with prompt structure and 10 essential techniques for creating effective, consistently-executed prompts.
  </Card>
</CardGroup>