Diagnosis · cover letter
Why does my cover letter sound like AI?
Cover letters were formulaic before any model wrote one. This page is about which parts of that formula a recruiter still expects, and which parts now read as proof nobody wrote it.
A cover letter sounds like AI when it can't tell its own genre conventions from the machine's default register. The passion-for-the-mission line, the perfect-fit claim, and the eager close were cover-letter cliches long before language models existed. What actually reads as generated is different: no named result, no specific reason for this employer, and two claims stacked back to back with matching grammar and nothing behind either one.
Why this happens to cover letter in particular
A cover letter is the one genre where the writer is asking a model to sound impressed with itself on someone else's behalf, and a model with no specific fact to add fills the gap with adjectives: passionate, driven, results-oriented. The prompt usually supplies a resume and a job posting, not a story, so the draft has nothing concrete to point to and reaches for the abstraction instead, a claim that you are a perfect fit rather than a project you shipped. The genre's own convention of stating fit and enthusiasm up front gives the model cover, because the padding sounds like something a real applicant might say too, just louder and with less behind it.
The tells that show up here
Not every AI tell appears everywhere. These are the ones that cluster on this surface, and what it is about the format that produces them.
- not-only-but
- Stacking two claims with matching grammar and no evidence behind either one is a fast way to pad a paragraph that has a resume bullet but no real story to tell.
- testament-family
- A generic claim about a role fitting some larger career narrative fills space where a specific reason for applying to this employer should be.
- not-x-its-y
- A cliche about the letter being more than a job to the writer borrows drama the letter has not earned, since by that point it has said nothing about the job yet.
- in-todays-fast-paced-world
- A phrase about today's competitive or fast-moving business world is a cover-letter cliche that predates AI by years, which is exactly why an edit pass that only hunts for banned words leaves it standing.
Before and after
A generic AI draft on the left. On the right, the real output of running that draft through underslop, checked so it adds no name or number the draft did not already carry. The voice is The Host, plainspoken and warm without gushing: tidy and sequential.
In today's fast-paced business environment, I am thrilled to apply for the Marketing Coordinator position at your company! With my proven track record and diverse skill set, I am confident I would be a valuable asset to your team. This isn't just a job opportunity for me, it's a chance to grow. My experience stands as a testament to my dedication and drive, and I hope to not only bring my skills but also my genuine passion to your organization.
I’m writing to apply for the Marketing Coordinator position at your company. I have a solid track record and a range of skills that I’d like to put to work for your team. This is more than a job opening to me — it’s a real chance to grow. My experience shows I’m dedicated and driven, and I’m eager to bring both my abilities and my genuine enthusiasm to your organization.
How to fix it yourself
- Find the sentence with no proper noun in it Any sentence that could be sent to a different company unchanged is doing no work. Replace it with a sentence naming the employer, the role, or something specific you did, or cut it entirely.
- Delete the fit claim, keep the fact behind it A line claiming you are the perfect fit says nothing a hiring manager can verify. The bullet or the result underneath that claim is what to keep; the claim itself can go.
- Cut every adjective but one per paragraph Passionate, driven, results-oriented: pick the strongest word in the paragraph and delete the rest. What remains should be doing the convincing, not the label.
- Read the opening line against the job posting If the first sentence could open a letter for any job at any company, it is a generic opener in disguise. Rewrite it to reference something specific from the posting itself.
Questions
Why is my cover letter getting flagged as AI?
Usually because it has no proper nouns in it. A sentence that could be sent to any company for any role reads as generated whether or not it was, since it carries nothing specific behind the claim of fit. Add back the one detail only you could know and the flag usually clears.
Does it matter if I use AI for my cover letter?
What a hiring manager notices is the absence of specifics, not the tool. A letter with a named project, a real number, or a concrete reason for that employer reads as written by a person no matter how the draft started. A letter without those reads as generated either way.
How to avoid cover letter sounding like AI?
Cut the sentence that could apply to any job, delete the perfect-fit claim and keep the fact behind it, and cut every adjective but one per paragraph. Those three edits do more than avoiding any particular banned word, because the tell here is missing specificity, not vocabulary.
Do employers care if you use ChatGPT for cover letter?
What we can say from the writing side is that a hiring manager reading forty letters a day notices the missing specifics faster than the tool used to produce them. A letter with real detail reads fine regardless of its drafting process; one with none reads as a template either way.
Is it okay if my cover letter is written by AI?
That is a decision for you and the employer's own policy, and not something this page can answer. What we can say is that a letter with no specific reason for that employer, that role, or a named result reads as generated to anyone screening a stack of them, drafted by AI or not.
This page explains the cause. underslop is the edit: paste up to 500 words on the free tier, and it marks the tells it could not remove. Your text is held for 0 seconds.