Prepper

AI cover letters: a fast method that still sounds like you

A step-by-step way to write a cover letter with AI: the inputs to give, an editing pass that removes the generic tone, and lines recruiters recognise. 5 min readUpdated By the Prepper team

An AI cover letter takes thirty seconds to produce and about as long for a recruiter to recognise. The difference between a letter that helps and one that hurts is ten minutes of your own input and editing.

Step 1: give it three things

  • The job advert, in full.
  • Your CV, or the two experiences most relevant to this role.
  • Your reason for this company, in one rough sentence of your own. This is the part AI cannot invent credibly.

Step 2: ask for the right shape

Ask for 200 to 250 words in four short paragraphs: why this role and company, your strongest matching experience with a result, a second match to another requirement, and a one-line close. Say "plain language, no clichés, do not add facts that are not in my CV".

Step 3: edit like this

  1. Rewrite the first sentence yourself. It sets the voice.
  2. Check every fact against your CV.
  3. Cut the giveaways: "I am excited to apply", "aligns perfectly", "dynamic", "passionate", "proven track record".
  4. Add one specific detail about the company that is not in the advert.
  5. Read it aloud. Change anything you would not say in an interview.

Tone settings that help

For banks, law and consulting, ask for a formal, direct tone. For start-ups and creative roles, ask for a warmer, shorter letter. In both cases concrete beats enthusiastic.

When to skip the letter

If the form marks it optional and you have nothing specific to say, a strong tailored CV is enough. A generic letter adds nothing.

PrepperApply writes a letter for each role from your CV and the advert, lets you choose tone and length, and offers one-click edits such as "shorter" or "more direct". The structure behind it is explained in how to write a cover letter.

Frequently asked questions

Can employers tell a cover letter was written by AI?

Often, from generic phrases and a lack of specifics. A letter with real details and your own opening sentence reads as yours, however it was drafted.

How long should an AI-written cover letter be?

The same as any cover letter: 200 to 300 words, or about half a page.

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