How To Define an AI Agent Persona by Tweaking LLM Prompts

In AI Agents: A Comprehensive Introduction for Developers, I introduced the key traits of AI agents by comparing them to an employee working in an organization. In this article, we will explore how to add a persona to an agent by taking advantage of the system prompts available for large language models (LLM) and vision language models (VLM).

Understanding System Prompts

System prompts, also known as system roles, serve as a foundational layer of instruction for LLMs. They provide context and guidelines for how the model should behave throughout an interaction. Unlike user prompts, which change with each query, system prompts persist across the entire conversation — ensuring consistency in the AI’s behavior and responses.

Key functions of system prompts include:

• Defining the AI’s expertise and knowledge domain
• Setting the tone and style of communication
• Establishing behavioral boundaries and ethical guidelines
• Enhancing task-specific performance

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Janakiram MSV?is an analyst, advisor, and architect. Follow him on?Twitter,??Facebook?and?LinkedIn.