A good prompt = clear context + clear task + output format. "Write me something about marketing" — bad prompt. "You are acting as a B2B SaaS marketing director with 10 years of experience. Write a LinkedIn post: 300 words, professional tone, 3 practical tips" — good prompt.
Powerful prompt techniques: Chain-of-Thought (asking to reason step by step), Few-shot (providing examples), Role prompting (assigning a role), Self-consistency (asking multiple times and selecting the best answer). To reduce hallucinations: "If you don't know, say so" and "Justify your reasoning" both help.
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