What is an AI prompt engineer? LangChain
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Definition

What is an AI prompt?

An AI prompt is the input submitted to a large language model (LLM) via a generative artificial intelligence (GenAI) platform, like OpenAI's ChatGPT or Microsoft Copilot. The prompt can be defined as a question, command, statement, code sample or other form of text. Some LLMs also support nontext prompts, including image and audio files. After the input is submitted, the AI platform applies it to the LLM, which uses the input as a foundation for generating an appropriate response.

An AI model can provide several outputs depending on how the prompt is phrased. The prompt can be as simple as a few words or as complex as several paragraphs. It might also include quoted material or images for review. The prompt's objective is to provide the AI model with exactly the information it needs to produce accurate, pertinent output. An AI prompt can also be a follow-up to a previous LLM response, such as asking for further details or providing additional information to enhance the response.

Why is an AI prompt important?

AI prompts can be used to submit a wide range of requests. An AI model can answer questions, write articles, translate phrases, generate images, create poetry, review programming code and more.

No matter what the use case, well-crafted AI prompts are essential for AI models to deliver accurate, relevant results. If an AI prompt is poorly defined, the LLM output might be vague, misleading, off topic, inaccurate or biased.

cartoon highlighting how AI models need appropriate prompts
It's important to have well-crafted AI prompts to get the desired relevancy and accuracy in AI model outputs.

Benefits of effective AI prompts

A carefully defined prompt typically yields the following:

  • Accurate responses. An effective AI prompt conveys the user's intent to the AI model, giving it what it needs to generate appropriate responses.
  • Enhanced performance. When the AI platform provides on-target responses, users complete tasks faster, saving time and resources.
  • Better user experience. High-value responses, which well-crafted prompts make more likely, increase the perceived value of AI systems for users.
  • Enhanced decision-making and productivity. Users can make informed decisions sooner if they receive timely, accurate information based on AI prompts. Getting those right reduces iterative interactions. This boosts both individual productivity and organizational decision-making.
  • Enhanced creativity. Well-crafted AI prompts can generate responses that include innovative ideas and perspectives users might not have considered before.
  • Customization. Users can tailor their AI prompts to meet their specific needs. Marketers, for example, can customize prompts by specifying the tone, style and topic, resulting in unique content suited to campaigns. Graphic elements can be requested or returned in AI responses. Users can also submit their content for feedback.
  • Targeted learning. Teachers can personalize learning experiences using prompts to adapt instructional content to use cases or requirements. Prompts can also provide real-time evaluations and quick feedback to students.
  • Time savings. AI prompts facilitate and streamline communications between human language and AI models by reducing repetitive explanations and quickly retrieving information from large data sets. This can save hours of manual data mining.
screen capture of a ChatGPT prompt and response involving computer code
This ChatGPT prompt and response illustrates a use case involving computer code.

Challenges and ethical issues of generative AI

GenAI and LLMs, when improperly designed or executed, can present several challenges and ethical concerns:

  • Harmful content. AI prompts contribute to the way in which LLMs evolve. These prompts could, intentionally or unintentionally, lead to the spread of false or damaging information.
  • AI hallucinations. An AI hallucination occurs when an AI model produces inaccurate information but conveys it as if it were true. This phenomenon arises because AI tools, such as ChatGPT, are designed to predict word sequences that closely align with user queries, yet they can't apply logic or detect factual inconsistencies in those prompts.
  • Ambiguity. When the context and input data in an AI prompt are unclear, the AI platform might respond with incorrect or irrelevant information. The type and quality of input data, whether text or images, can strongly influence the AI model's capability to produce specific, clear results.
  • Biased outputs. If an LLM relies on biased data, social inequities and prejudices are likely to impact an LLM's responses to AI prompts and perpetuate the bias.
  • Complexity. Creating effective AI prompts can be difficult, particularly for users with limited technical knowledge.

Given these concerns, responses to AI prompts should be monitored frequently to detect and minimize errors, bias and misinformation. By following ethical guidelines and conducting regular audits, organizations can more easily pinpoint and rectify bias in a GenAI platform. Additionally, legal frameworks, such as New York City's AI bias law, could contribute to advancing fairness and ensuring accountability.

For more information on generative AI-related terms, read the following articles:

What is an AI prompt engineer?

What is prompt engineering?

What is synthetic data?

What is LangChain?

What is multimodal AI?

How do AI prompts work?

An AI prompt should provide explicit instructions to the LLM so it can generate more useful, accurate, complete responses. However, the prompt itself is only a part of the system. An AI model also uses natural language processing and deep learning algorithms to examine and comprehend the user's input.

Whenever an AI model receives a prompt, it references the patterns it has learned from the training data. The training data is often composed of large data sets to help ensure more accurate results. The AI model computes the probabilities of various word sequences and correlations based on both the prompt and training data. From these results, the model generates a response that's contextually relevant to the input. This entire process is referred to as inference.

For a prompt to successfully generate the desired output, it must be highly specific. An AI prompt such as "Write an essay" produces only generic results. However, offering precise details, such as the essay type, topic, tone, target audience and word count, generates more precise, relevant output. Specificity in AI prompts also lowers the likelihood of inaccurate responses.

How do you write a prompt in AI?

Regardless of the AI platform -- whether ChatGPT, Microsoft Copilot, Google Gemini, Stable Diffusion or OpenAI's Dall-E -- effective AI prompting is essential for achieving desired outcomes. Here are some tips:

  • Identify the goal. Before writing a prompt, identify the purpose and expected output. Ask, for example, for the system to generate a blog post of fewer than 1,000 words or to return an image of a cat with green eyes and thick fur.
  • Be specific and provide context. Include precise instructions that focus on specific traits, such as features, shapes, colors, textures, patterns or aesthetic styles. Include background and contextual information. For instance, "Create landscape" does not yield results as useful as "Generate a serene landscape with a snow-capped mountain in the background, a calm lake in the foreground and a setting sun casting warm hues across the sky."
  • Include keywords or phrases. Where possible, include important keywords and phrases, which can facilitate search engine optimization and help to communicate term preferences to the AI model.
  • Keep prompts precise and clean. The prompt should be as exact as possible and omit unnecessary or redundant information. It should be as long as necessary to fully convey what the user hopes to achieve.
  • Avoid conflicting terms. A prompt should avoid conflicting terms so the AI model is not confused. For example, using both "abstract" and "realistic" in a prompt might confuse the model.
  • Ask open-ended questions. Prompts framed as yes-no questions tend to produce limited output compared to open-ended questions. Instead of asking, "Is coffee bad for your health?" the AI prompt could ask, "What are some pros and cons of coffee consumption on health?"
  • Use the right tools. Several platforms and AI tools are available to generate prompts and produce high-quality AI-generated content. Services such as ChatGPT, Dall-E and Midjourney let users customize and generate prompts.

As the field of GenAI continues to progress, the demand for prompt engineers is on the rise. Explore the key skills prompt engineers need to excel in this role.

This was last updated in November 2024

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