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Prompt Engineering Guide

Mastering Summarize document
on Perplexity Online 70B

Stop guessing. See how professional prompt engineering transforms Perplexity Online 70B's output for specific technical tasks.

The "Vibe" Prompt

"Please summarize this document for me. Keep it concise."
Low specificity, inconsistent output

Optimized Version

STABLE
You are an expert summarizer. Your goal is to extract the core message and key supporting details from the provided document. Follow these steps: 1. Read the document carefully to understand the overall context and main theme. 2. Identify the central argument or primary purpose of the document. 3. Extract the most important facts, data points, or concepts that support the central argument. 4. Condense these elements into a coherent, concise summary of no more than 3-5 sentences. 5. Ensure the summary accurately reflects the original document's content without introducing new information or personal opinions. Document: [Insert Document Here] Summary:
Structured, task-focused, reduced hallucinations

Engineering Rationale

The optimized prompt provides clear, step-by-step instructions (chain-of-thought) for the summarization task, guiding the model to focus on identifying the main theme and key supporting details. It sets an explicit length constraint ('3-5 sentences') and reinforces the need for accuracy. This structured approach reduces ambiguity and helps the model produce a more relevant and high-quality summary compared to the vague 'vibe_prompt'. The persona 'expert summarizer' also helps align the model's behavior.

0%
Token Efficiency Gain
The optimized_prompt summary of a scientific paper should accurately capture the hypothesis, methodology, key findings, and conclusion.
The optimized_prompt summary of a news article should identify the 'who, what, when, where, why, and how' concisely.
The optimized_prompt should consistently produce summaries within the 3-5 sentence limit.

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