Cover letters written by AI get rejected — not because recruiters run AI detection, but because they're generic. "I am a passionate professional with a proven track record of delivering results in fast-paced environments" is not a sentence a human wrote about themselves. It's what happens when you ask AI to write a cover letter without giving it anything specific to work with.
The fix is not avoiding AI. It's using it correctly.
What AI Should Write
AI is excellent at structure, formatting, and professional language. Give it specific inputs and it will produce clean, well-structured prose faster than you can. These are the parts of a cover letter AI handles well:
- The professional framing of your experience
- The transition between paragraphs
- Connecting your background to the role's requirements
- The closing paragraph with a confident call to action
What You Must Write Yourself
Two things make a cover letter memorable: a specific achievement with a real number, and a specific reason you want this company that isn't "I admire your commitment to innovation." Both require input only you can provide.
Before you touch a prompt: write down your strongest relevant achievement (with a number), and one genuine, specific reason you want to work at this company. These two inputs transform an AI cover letter from template to document.
The Prompt
"You are a hiring manager who has read 5,000 cover letters. Write a cover letter for [NAME] applying to [ROLE] at [COMPANY].
Background: [2-SENTENCE CAREER SUMMARY] Strongest relevant achievement: [ACHIEVEMENT WITH METRIC] Why this company specifically: [YOUR GENUINE REASON — not 'exciting opportunity'] Tone: [MATCH THE COMPANY CULTURE — startup: direct and energetic / corporate: polished / creative agency: personality-forward]
Requirements: - 3 paragraphs, under 350 words - Opening that immediately demonstrates fit (not 'I am writing to apply for...') - Paragraph 2: the specific achievement with its measurable result - Paragraph 3: why [COMPANY] specifically, referencing something real about them - Closing: confident, not desperate — invite next step, don't beg for consideration - Banned phrases: 'I am a passionate professional', 'I thrive in fast-paced environments', 'team player', 'I would be a great fit'"
After the First Draft
Read it aloud. Any sentence that sounds like it was written by a robot — rewrite it. Most commonly: the opening line (AI defaults to professional but generic), any sentence with "proven track record" or "passionate about," and the closing (AI tends toward subservient; make it confident).
Replace one generic sentence with something a stranger couldn't have written: a specific observation about the company, a detail from the job description, or a sentence that reflects how you actually think about your work.
One More Rule
The cover letter's only job is to make the recruiter want to read your CV. Not to explain everything about you. Not to prove you're qualified for every requirement. One strong achievement plus one genuine reason you want this specific role is enough.
Use Promptzio's Personal & Career prompts for cover letters, CV rewrites, LinkedIn profiles, and interview preparation.