How to Use AI to Write a Cover Letter (That Doesn’t Sound Like AI)

Writing a cover letter for every application is tiring, and the blank page doesn’t help. AI can get you from nothing to a strong, tailored draft in minutes. The catch is that a lazy prompt produces the same generic letter everyone else is sending, and recruiters can usually spot it.

This guide shows you how to use AI as a writing partner. You bring the facts about you and the job, the AI organises them, and you finish with a letter that sounds like a real person.

What you’ll need

• The full job advert (copy the text)
• Your up-to-date CV
• Two or three real achievements or stories you’re proud of
• A note of why you actually want this job or company
• An AI chatbot such as ChatGPT, Claude, Gemini or Grok

Step-by-step: write your cover letter with AI

1. Analyse the job first. Before writing anything, ask the AI to pull out the top requirements and the skills the employer seems to care about most (prompt 1). This keeps your letter focused.
2. Match your evidence. Ask it to map your CV against those requirements and flag any gaps. Fill gaps with real examples from your experience, never invented ones.
3. Write the first draft. Use prompt 2. Ask for a short letter of around 250–350 words, which is enough for most roles. Tell it the tone you want: warm, confident, plain English.
4. Make it yours. Rewrite the opening line in your own words. Add one specific detail only you could know, such as a project, a customer story or why the company matters to you.
5. Remove the AI tells. Cut clichés such as “I am thrilled to apply”, “dynamic environment” or “I am confident I would be a valuable asset”. Prompt 3 helps.
6. Fact-check. Make sure every number, date, job title and skill is accurate. AI sometimes “improves” facts, and that can cost you at interview.
7. Proofread and format. Address it to a named person if you can find one, match the company’s name exactly, and save as PDF unless the advert asks otherwise.

Copy-paste prompts

1. Understand the job

Here is a job advert:
[PASTE JOB ADVERT]
List the 5 most important requirements in order of priority, the key skills and keywords they use, and anything the advert suggests about the company culture. Keep it brief.

2. Draft the letter

Using the job requirements above and my CV below, write a cover letter of 250–350 words.
My CV: [PASTE CV]
Extra context: [WHY YOU WANT THIS JOB / ONE ACHIEVEMENT YOU'RE PROUD OF]
Rules: British English, plain and confident tone, no clichés, no exaggeration, don't invent experience or numbers I haven't given you. Open with a specific reason I'm interested, link 2–3 of my achievements to their top requirements, and end with a short, polite call to action.

3. De-generic it

Review this cover letter and highlight any phrases that sound generic, overly formal or AI-written. Suggest more natural, specific alternatives that sound like a real person talking. Don't add any new facts.
[PASTE DRAFT]

4. Recruiter’s eye view

Act as a hiring manager for this role. Read my cover letter and tell me in 5 bullet points: what's convincing, what's missing, and what might make you stop reading. Be honest.

Recommended tools

• Claude: strong at natural-sounding writing and editing tone.
• ChatGPT: quick drafts and good at structured analysis of job adverts.
• Gemini: useful if you work in Google Docs.
• Grammarly: a final grammar and clarity check.
• Canva: if you want a clean, matching CV and letter design.

Tips and mistakes to avoid

• Never send the first draft. It will read as generic. Your edits are what make it work.
• Don’t let AI invent achievements. If it adds a number or skill you didn’t give it, delete it.
• Check the employer’s AI policy. Some employers ask candidates not to use AI in applications. Respect that if it’s stated.
• Protect your privacy. Remove your home address and phone number before pasting your CV into a chatbot. They’re not needed for drafting.
• Short beats long. A focused one-page letter is easier to read than a long one.

FAQ

Can employers tell if I used AI for my cover letter?

Not reliably, and AI-detection tools are known to be inaccurate. But generic phrasing is easy to spot. A letter with your own specific examples and voice won’t read like a template.

Is it okay to use AI for job applications?

Using AI to organise and polish your own experience is widely accepted, much like using a spellchecker or asking a friend for feedback. Just make sure everything is true and follow any rules the employer sets.

How long should an AI-written cover letter be?

Aim for roughly 250–400 words, or less if the application form has a word limit. Ask the AI to stick to a specific word count.

Here is a job advert:
[PASTE JOB ADVERT]
List the 5 most important requirements in order of priority, the key skills and keywords they use, and anything the advert suggests about the company culture. Keep it brief.

Related guides

• How to use AI to prepare for a job interview
• How to use AI to write professional emails faster
• How to use AI to learn a new language

Reference: National Careers Service: How to write a cover letter