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Prompt Engineering Guide

Mastering Write email
on Claude 3.5 Haiku

Stop guessing. See how professional prompt engineering transforms Claude 3.5 Haiku's output for specific technical tasks.

The "Vibe" Prompt

"Hey Claude, write an email for me. I need to tell my team that the Q3 sales report is due by end of day on Friday. Ask them to include key metrics and a brief summary of their performance. Also, remind them about the new reporting template. Keep it professional but friendly."
Low specificity, inconsistent output

Optimized Version

STABLE
You are an expert email writer for a professional team. Your task is to draft an email to the sales team regarding their Q3 sales report submission. Here are the instructions: 1. **Recipient:** Sales Team 2. **Purpose:** Announce the deadline for the Q3 sales report. 3. **Key Information to Convey:** - **Deadline:** End of day, Friday [Insert Specific Date Here - e.g., October 27th] - **Content Requirements:** - Key sales metrics - Brief performance summary - **Important Reminder:** Use the new reporting template. 4. **Tone:** Professional yet friendly. 5. **Call to Action:** Submit the report by the deadline. 6. **Closing:** Offer assistance for any questions. Draft the email.
Structured, task-focused, reduced hallucinations

Engineering Rationale

The optimized prompt leverages a chain-of-thought structure by breaking down the email writing task into distinct, numbered instructions. It explicitly defines the persona ('expert email writer'), purpose, recipient, key information with sub-bullets for clarity on content requirements, desired tone, call to action, and closing. This structured approach leaves less room for ambiguity, ensuring all critical elements are covered precisely. The 'vibe_prompt' is vague with implicit instructions, requiring the model to infer structure, tone, and specific content, which can lead to off-topic generation or missed points.

0%
Token Efficiency Gain
The optimized prompt clearly defines all necessary components for the email, reducing ambiguity.
The optimized prompt guides the AI to produce a more consistently structured and complete email.
The optimized prompt ensures specific details like 'key metrics' and 'brief summary' are explicitly included.

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