Effective prompts for AI: The Essentials

By hazbunc@who.int , 1 February 2026
Description

The article explains how to craft effective prompts so AI tools produce more accurate, useful results. It begins by defining prompts as the instructions or conversation starters you give an AI system, emphasizing that the quality of the output depends heavily on how you phrase your input.

It outlines three core strategies for strong prompting:

  • Provide context to shape the AI’s perspective or role.
  • Be specific about the task, constraints, examples, or audience.
  • Build on the conversation, using iterative follow‑ups rather than restarting each time.

The article also introduces common prompt types—zero‑shot, few‑shot, instructional, role‑based, contextual, and system/meta prompts—and explains when each is useful.

It highlights limitations: AI can hallucinate, produce biased or inaccurate content, and sometimes lose track of context. The authors argue that as models evolve, problem formulation (defining what you need) may become more important than prompt engineering itself.

Overall, the piece encourages thoughtful, context‑rich prompting while staying aware of AI’s flaws and the need for critical evaluation of outputs.

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