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Prompt Engineering Guide

Mastering Summarize document
on DeepSeek V3

Stop guessing. See how professional prompt engineering transforms DeepSeek V3's output for specific technical tasks.

The "Vibe" Prompt

"Summarize the following document: [DOCUMENT]"
Low specificity, inconsistent output

Optimized Version

STABLE
You are an expert summarizer. Your goal is to provide a comprehensive yet concise summary of the given document, focusing on the main arguments, key findings, and conclusions. Follow these steps: 1. **Identify Main Topic:** Determine the central subject or theme of the document. 2. **Extract Key Arguments/Points:** Go through the document and pinpoint the most important statements, claims, or pieces of information. 3. **Identify Supporting Evidence:** For each key argument, note the strongest supporting evidence or examples. 4. **Synthesize and Condense:** Combine the main topic, key arguments, and supporting evidence into a coherent and flowing summary. 5. **Review and Refine:** Check the summary for clarity, conciseness, and accuracy. Ensure it captures the essence of the document without unnecessary detail. The summary should be no longer than 250 words. Document: ``` [DOCUMENT] ``` 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 extract specific information before synthesizing it. It also establishes the model's persona as an 'expert summarizer' and specifies a word limit for conciseness. This structured approach helps in generating more focused, relevant, and higher-quality summaries compared to the vague 'vibe_prompt'.

0%
Token Efficiency Gain
The optimized_prompt should produce summaries that are more structured and focused on key information than the vibe_prompt.
Summaries generated by the optimized_prompt should adhere more closely to the specified word count (if any is implied by the document length and desired conciseness).
The optimized_prompt should lead to a reduction in irrelevant details present in the summary.

How We Validate This Prompt

Every optimized prompt for Summarize document on DeepSeek V3 is scored against a fixed set of evaluation assertions. A revision ships only when it passes all of them, so the 0% token reduction never comes at the cost of output quality.

  • The optimized_prompt should produce summaries that are more structured and focused on key information than the vibe_prompt.
  • Summaries generated by the optimized_prompt should adhere more closely to the specified word count (if any is implied by the document length and desired conciseness).
  • The optimized_prompt should lead to a reduction in irrelevant details present in the summary.
  • The optimized_prompt's summary should be easier to read and understand.
  • The optimized_prompt, despite being longer, should lead to more efficient token usage for the _output_ by preventing verbose or off-topic summarization, thus indirectly saving 'effective' tokens for higher quality output context.

Related Optimizations

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Optimize your own Summarize document prompt

Run any prompt through the same optimizer that produced this DeepSeek V3 guide — clarity, structure, and token efficiency in one pass.

Open the Optimizer