ChatGPT: Write a Cover Letter for a US Job

Updated November 6, 2026. Built against the tool’s current screens and checked step by step. How we check this lesson

A US cover letter is read in under a minute, and it has one job: show that you match what the posting asked for, with proof. In this free, interactive lesson you attach a job posting and a resume to ChatGPT, ask for a one-page letter that follows US conventions and backs each match with a fact, then have ChatGPT check every claim against the resume. In the real run it caught a guessed "Ms.", two filler phrases and three requirements the applicant must not claim.

Start here first: Summarize a Meeting Transcript with ChatGPT (module 1 of ChatGPT for Everyday Work)

In the course: Part 3 · ChatGPT for Everyday Work (Module 35 of the full course)

The business case: tailored letters without made-up claims

Most US job postings still ask for a cover letter, and a generic one is easy to spot. Writing a tailored letter for every application takes an hour, so people either skip it or send the same letter everywhere.

ChatGPT can write a tailored draft in seconds, but it will also happily fill gaps with skills you don't have. A claim you can't back up is worse than no claim: it comes back as an interview question.

What changes: you give it only the posting and your resume, tell it not to claim anything that isn't in the resume, and then make it prove every line before you send.

The example: an accounts payable job in Columbus

Joseph Mwangi (made up) has five years of accounts payable experience: four in Nairobi and one as a temp in Columbus, Ohio. He is applying for an Accounts Payable Specialist job at Lakeshore Health Partners (made up), a group of 11 primary care clinics. The posting asks for 3-way matching, payment runs and QuickBooks, which he has, and W-9s, 1099s, month-end accruals and NetSuite, which he does not.

Download both files and follow along: [job-posting-ap-specialist.txt](/content/files/chatgpt-us-cover-letter/job-posting-ap-specialist.txt) and [resume-joseph-mwangi.txt](/content/files/chatgpt-us-cover-letter/resume-joseph-mwangi.txt).

Who this lesson is for

Anyone applying for an office job in the US, and especially people whose experience is partly from another country, where cover letters often include a photo, a date of birth or a long career story. It is part of the free start guides for [East African professionals](/content/start/ai-kazini) and [Caribbean-American professionals](/content/start/caribbean-americans). Take Prompt Writing 101 first if you are new to ChatGPT.

What ChatGPT produced in the real run

The letter came back as a Writing card of about 300 words, with three evidence paragraphs. The audit marked 23 claims: most Supported with the exact resume line quoted, and "attention to detail" and "collaborative approach" marked Inferred. It flagged the assumed honorific, listed W-9/1099 work, month-end accruals and NetSuite as not covered, and said those gaps "should not be filled with invented experience."

What this saves you

• Time: about an hour per application, down to fifteen minutes including the check.
• Credibility: every line in the letter is something you can talk about in the interview.
• US conventions: one page, no personal details US employers don't expect.
• What it does not replace: reading it out loud, fixing what it flagged, and deciding what to say about the gaps.

Gotchas

• Say "don't claim anything that isn't in my resume". Without that line, ChatGPT fills gaps.
• Don't trust the note under the letter. ChatGPT said nothing was added, and its own audit still found inferred phrases.
• Check the greeting. If the posting gives a first and last name only, write "Dear Dana Whitfield", not a guessed Mr. or Ms.
• If you really have a skill the posting asks for, add it to your resume first, then regenerate the letter.
• Your resume has personal details: use a Temporary Chat.

Next business case

Next: Explain a US workplace policy in plain English, for your first week in the new job.

Step by step: ChatGPT: Write a Cover Letter for a US Job

All 19 steps of the interactive module, in order. In the module you watch each one, then do it yourself in a practice copy that checks your work.

1. Start from the posting and your resume

1. Read the job posting. A US cover letter has one job: show the hiring manager, in under a page, that you match what they asked for, with proof. Here is the posting. Notice the name at the bottom and the 1099 and NetSuite lines. Then click ✕.

   A US cover letter has one job. Show the hiring manager, in under a page, that you match what they asked for, with proof. Here's the posting. Notice the name at the bottom, and the lines about ten ninety-nines and NetSuite. Then close the file.

2. Turn on Temporary chat. Your resume has your phone number and work history. Click the Temporary chat icon at the top right so it stays out of your chat history.

   Your resume has your phone number and your work history.

3. Open the + menu. Click the + next to the message box.
4. Add photos & files. Click Add photos & files.
5. Pick resume-joseph-mwangi.txt. Click resume-joseph-mwangi.txt.
6. Add job-posting-ap-specialist.txt. Now click job-posting-ap-specialist.txt too. In the real Open window, hold Ctrl (or Cmd on a Mac) while you click, so both files are selected.

   Now add the job posting. In the real window, hold Control while you click, so both files are selected.

7. Open them. Click Open. The letter can only use what is in these two files, so nothing gets made up from thin air.

   The letter can only use what's in these two files.

2. Ask for the letter

8. Click the message box. The request does three things: sets the US rules (one page, no photo, no date of birth), says match the posting with proof, and says don’t claim anything that isn’t in my resume. Click the message box.

   The request does three things. It sets the US rules, like one page and no photo. It asks for proof for every match. And it says, don't claim anything that isn't in my resume.

9. Ask for the cover letter. Paste in the request. 250-350 words, addressed to the hiring manager by name, the 3 best matches each backed by a fact from your resume.

   This asks for a one-page letter to the hiring manager, with your three best matches, each backed by a fact from your resume.

   Write a cover letter for this US job, using only the job posting and my resume (both attached). Follow US conventions: one page, 250-350 words, no photo, no date of birth, no marital status. Address it to the hiring manager by name. Pick the 3 requirements in the posting I match best and back each one with a fact from my resume. Don't claim any skill or experience that isn't in my resume.

10. Send it. Click Send (the arrow on the right).

3. Read it like the hiring manager

11. Read a proof paragraph. This is what makes a US letter work: a claim, then a number from your resume. About 300 invoices a month, mismatches to buyers within one business day. Click the paragraph.

    This is what makes a US cover letter work. A claim, then a number from your resume. About three hundred invoices a month. Mismatches sent to buyers within one business day.

12. Look at the greeting. It wrote Dear Ms. Whitfield. The posting says Dana Whitfield, Controller. It never says Dana is a woman. That is a guess, and a wrong guess is a bad first line. Click the greeting.

    Look at the greeting. It says, Dear Ms. Whitfield. The posting never says Dana is a woman. That's a guess, and a wrong guess is a bad first line.

13. Don’t trust the self-report yet. Under the letter ChatGPT says no unsupported qualifications were added. Maybe. Don’t take its word for it: you will make it prove every line. Click the note.

    Under the letter, ChatGPT says nothing was made up. Maybe. Don't take its word for it. Next, you make it prove every line.

4. Check every claim

14. Click the message box. Now ask ChatGPT to audit its own letter against your resume, line by line. Click the message box.

    Now make it check its own letter against your resume, line by line.

15. Ask for a claim check. Paste in the request. A table of every claim and the exact resume line behind it, the posting requirements the letter misses, and anything that breaks US conventions.

    This asks for every claim, with the exact resume line behind it, plus what the letter misses, and anything that breaks US rules.

    Now check the letter before I send it. Make a table of every claim in the letter and the exact resume line it comes from. Mark anything that isn't in my resume. Then list any requirement in the posting the letter doesn't cover, and anything that breaks US cover letter conventions.

16. Send it. Click Send (the arrow on the right).
17. Read the claim table. Most rows are Supported, with the resume line quoted. Two are Inferred: “attention to detail” and “collaborative approach” are not in your resume. They are filler. Click the table.

    Most claims are supported, with the resume line quoted. Two are inferred. Attention to detail, and collaborative approach. They're not in your resume. They're filler.

18. See what you can’t claim. The posting asks for 1099s, month-end accruals and NetSuite. Your resume has none of them, and ChatGPT says not to invent them. If you can do one, add it to your resume first, honestly. Click the gaps.

    The posting asks for ten ninety-nines, month-end accruals, and NetSuite. Your resume has none of them, and ChatGPT says, don't invent them. If you can really do one, add it to your resume first.

19. Make the fixes, then send. Its list: Dear Dana Whitfield, drop the First/Second/Third, swap the filler for real skills. Make those edits yourself, read it out loud once, and send it as a PDF with your resume. Click the list.

    Here's the fix list. Dear Dana Whitfield. Drop first, second, third. Swap the filler for real skills. Make the edits, read it out loud once, and send it with your resume. A tailored, honest cover letter in fifteen minutes.

Frequently asked questions

Can ChatGPT write a cover letter for a US job?

Yes. Attach the job posting and your resume, ask for one page (250-350 words) addressed to the hiring manager, and tell it to back each match with a fact from your resume and not to claim anything that isn't in it. Then ask it to check every claim against the resume.

What should a US cover letter leave out?

A photo, your date of birth, marital status and other personal details. US employers don't expect them, and many avoid seeing them. Keep it to one page about the job.

Is this lesson free?

Yes. Stepthrough is free and the practice copy needs no account. To do it for real you need your own ChatGPT account; the free plan works.

Start this module free

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