7 Dead Giveaways That Your Cover Letter Was Written by ChatGPT (And How to Fix Each One)
Recruiters read hundreds of cover letters a week. After a while, they develop a sixth sense for ChatGPT — not because they run every letter through a detector, but because the patterns are impossible to miss. Here are the seven biggest tells, and exactly how to fix them before you apply.
1. You Opened With "I Am Excited to Express My Interest"
ChatGPT defaults to formal, press-release openers that nobody actually says out loud. If your first sentence sounds like a corporate announcement, it's already a red flag. Try starting with something specific: the product you actually use, the exact role, or a one-line statement about what you bring to it.
2. You Wrote "Proven Track Record" Somewhere
"Proven track record" is one of ChatGPT's favorite phrases — and recruiters have read it ten times before lunch. Replace it with a real result. "I grew email open rates from 22% to 41% in six months" tells a story. "Proven track record of success" tells nothing and signals a robot wrote it.
3. Every Sentence Is the Same Length
AI writes in eerily uniform rhythms. Humans don't. Read your letter out loud — if every sentence clocks in around 15 to 20 words, that's the tell. Mix it up. Short punches work. So do longer, more detailed sentences that walk the reader through a specific challenge you actually solved.
4. You Stacked Three Vague Adjectives Together
"A results-driven, highly motivated, and dedicated professional" — ChatGPT loves this construction. Three adjectives, comma-separated, all impossible to verify. Pick one quality and back it up with evidence. A single concrete example beats three hollow descriptors every time.
5. You Didn't Mention Anything Specific About the Company
ChatGPT, given a generic prompt, writes to "your company" or drops the company name in once and never returns to it. Real cover letters show you did your homework. Reference a recent product launch, a specific team initiative, or something from their actual mission statement — that specificity is nearly impossible to fake with a basic AI prompt.
6. Your Closing Is a Polite Non-Statement
"I look forward to discussing how my skills align with the needs of your organization." Nobody has ever gotten a callback from that sentence. Close with a real ask — something brief and direct, like when you're available for a call. It signals confidence, which is what hiring managers actually want to see.
7. There Is No You In It
The biggest tell of all: the letter could have been written for anyone applying to any job. ChatGPT fills a template — it doesn't know your actual story. Your weird career pivot, the side project that flopped, the thing you're genuinely curious about in this specific role — that texture is what makes a letter feel like a person sent it.
What Should You Actually Do?
AI is fine as a starting point. Most people use it to get past the blank page, and there's nothing wrong with that. The mistake is submitting the first draft unchanged. Rewrite the opener in your actual voice. Swap buzzwords for numbers. Add one specific thing about the company you genuinely know.
Once you've edited it, run the letter through our free AI detector before you hit send — it takes 30 seconds and could save you from an automatic skip pile. For letters that need deeper restructuring, WriteMask rewrites AI-generated text to read naturally, with a 93% pass rate across major detection tools.
It also helps to understand how AI detectors work — sentence uniformity and word-choice predictability are the two main signals, and both are fixable with small, deliberate manual edits. And if you've been editing heavily but are still worried about being flagged unfairly, read up on AI detection false positives so you know exactly what you're dealing with.