By the end of this guide you will have a cover letter written for one specific job: a short, accurate letter that matches the posting, uses your real experience, and sounds like you. The drafting is done by an AI writing tool that reads the job description and your resume and proposes a letter, and you edit it into something you would be happy to sign.
If you want to write a cover letter with AI, the useful question is which tool gets your background and the job description into the same place. This guide covers the steps and compares six tools from our Writing category, most of which pair a cover letter writer with a resume builder.
Key takeaways
- Paste the job description and your resume into an AI cover letter tool, generate a draft, then rewrite it so every claim is true and specific to you.
- The main decision is the tool type: a resume builder with a cover letter feature, a job-search suite that tailors each application, or a general chat assistant.
- Free plans are small. For example, Rezi's Free plan allows 1 resume, and Huntr's Free plan covers 2 job-tailored resumes, with AI cover letters on its Pro plan.
- You are responsible for the content. Never let a tool invent experience, and read the letter aloud before you send it.
What you need before you start
- A current resume. A file or LinkedIn profile you can import, or notes on your roles and results.
- The job posting. The full text of the job description, plus the company name and the hiring manager's name if you can find it.
- Three or four true examples. Specific results or projects that match what the posting asks for.
- An account. All six tools here are listed as web apps, and most let you start free.
- Time. Under an hour for the first letter. Later letters are quicker once your resume is in the tool.
- Difficulty. Easy. The effort is in editing the draft, not in generating it.
Which kind of AI tool fits this job
Pick by how many applications you are sending and where your resume already lives.
Resume builders with a cover letter writer. Rezi is an AI resume builder that also lists cover letter and resignation letter writers, and can import an existing resume or a LinkedIn profile. ResumeBuild.ai drafts cover letters and resignation letters, and uses a ResumeBuild Score across 23 criteria. Resume Now includes a cover letter generator alongside its resume builder and ATS resume checker.
A job-search suite that tailors each application. Huntr AI Resume Builder keeps base resumes, tailors a version for each posting, and includes AI cover letters, a job tracker and a Chrome extension. MajorGen is an AI career agent that drafts a resume and cover letter for each role in your own voice, and lets you approve each action before it is taken.
A one-format tool with interview practice. Sheets Resume Builder lists a cover letter builder tailored to each job, a mock interview simulator and job-matching tools in the same membership.
Our directory also lists general assistants with cover letter helpers, but the tools above are built around the job application itself.
Step 1: Collect your inputs
A letter is only as specific as what you feed the tool.
- Copy the job description into a note and highlight the three or four requirements that matter most.
- Gather your resume and pick the experiences that answer those requirements.
- Write down one or two true results for each, with numbers where you have them.
- Note the company's name, the role title and, if possible, the name of the person who will read the letter.
Check it worked by confirming that each highlighted requirement has an example from your own history next to it.
Step 2: Choose a tool and set up your profile
You end this step with an account and your resume loaded.
- Choose a tool using the comparison table below. If you need a resume update as well, a builder such as Rezi, ResumeBuild.ai or Resume Now covers both.
- Sign up and import your resume or LinkedIn profile where the tool allows it. Rezi and ResumeBuild.ai both list LinkedIn import.
- Fix any errors in the imported text so the AI starts from correct facts.
- Check the plan: AI cover letters on Huntr need its Pro plan, and Rezi's Free plan gives limited keyword targeting and analysis.
Check it worked by reading the imported resume and confirming dates, titles and employers are right.
Step 3: Paste the job description and set the tone
The goal is a first draft aimed at one job.
- Open the cover letter feature and start a new letter for this application.
- Paste the job description and select your resume or base version.
- Choose a tone if the tool offers one, such as formal for a law firm or warmer for a start-up.
- Add the instructions that matter to you: the two experiences to feature, the reason you want this company, and what to avoid.
Check it worked by seeing a draft that names the right company and role.
Step 4: Generate the draft and read it critically
Treat the output as raw material.
- Generate the letter and read it from the top without editing.
- Mark every sentence that is generic and could appear in anyone's letter.
- Mark every claim you cannot back up with a real example. AI writers can overstate or invent details.
- Generate a second version if the first misses the mark, and compare the openings.
Check it worked by having a list of sentences to keep, rewrite or delete.
Step 5: Rewrite it so it is specific and true
This is where the letter becomes yours.
- Replace vague phrases with your examples from Step 1.
- Open with the reason you are applying and the strongest match, not with a summary of your career.
- Match the posting's language where it is honest to do so. Tools such as Rezi and Huntr list keyword targeting from the job description, but keep it natural.
- Cut anything that repeats your resume line for line.
- Keep it to one page and a few short paragraphs.
Check it worked by reading it aloud: every sentence should sound like something you would say.
Step 6: Check the facts, tone and format
A short final check protects you from the usual AI slips.
- Verify company name, role title, hiring manager name and dates.
- Check every number and claim against your resume.
- Run a spell-check, and ask a friend or mentor to read it. A human reader catches tone problems that tools miss.
- Keep a consistent look with your resume: same name, contact details and font style.
Check it worked by comparing the letter with the job description one last time and confirming it answers the top requirements.
Step 7: Export, send and track
Send it in the format the employer asks for, and keep a record.
- Export the file. Resume Now's free download is a plain TXT file, and PDF and Word need a paid plan. Rezi's Free plan allows 3 PDF downloads. Sheets Resume Builder downloads resumes as PDF, with Google Docs and Word exports for offline edits.
- Name the file clearly, for example your name and the role.
- Submit it with your resume, and keep a copy of the exact text you sent.
- Track the application. Huntr includes a job tracker, and MajorGen includes an application pipeline with follow-ups.
Check it worked by opening the exported file on another device and confirming the layout is intact.
Tools for this job compared
| Tool | Good fit for | Pricing | Stated limits |
|---|---|---|---|
| Rezi | Resume plus cover letter on web and Chrome extension | Freemium, paid from $29/mo (checked 24 Oct 2026) | Free plan: 1 resume, 1 AI interview, 3 PDF downloads; .DOCX and Google Drive export under Pro |
| Huntr AI Resume Builder | Tailoring each application and tracking jobs | Freemium, paid from $40/mo (checked 24 Oct 2026) | Free plan: 2 job-tailored resumes and 2 application packets; AI cover letters need Pro |
| ResumeBuild.ai | Resumes and cover letters with LinkedIn import | Freemium, paid from $29/mo (checked 24 Oct 2026) | Free Basic plan: 1 resume and 3 downloads; no refunds for Lifetime |
| Sheets Resume Builder | A one-format resume with a cover letter builder and interview practice | Freemium, paid from $9 one-time (checked 24 Oct 2026) | Payment is requested after you finish building a resume; uses one resume format |
| Resume Now | Template-based resumes with a cover letter generator | Freemium, paid from $5.85/mo (checked 24 Oct 2026) | Free download is plain TXT; trial plans auto-renew unless cancelled |
| MajorGen | Agent-driven applications to many roles | Freemium | Plan prices not published; usage paid per run with credits |
Prices and plan limits change, so confirm the current terms on each vendor's site before you subscribe.
Common mistakes to avoid
- Sending the first draft. AI letters tend to be generic and can stretch the truth. Fix it by rewriting with specific examples and removing any claim you cannot support.
- Inventing or inflating experience. Some tools fill gaps with plausible-sounding detail. Fix it by checking every claim against your own record before you send.
- Reusing one letter for every job. A letter that could go to any employer reads like it. Fix it by pasting each job description and naming the company and role.
- Ignoring the trial terms. Some resume tools start with a low-cost trial that auto-renews, as Resume Now lists. Fix it by reading the terms and noting the renewal date.
- Skipping a human read. Tone and fit are hard for tools to judge. Fix it by reading aloud and getting a second pair of eyes, and follow any employer rules on AI-assisted applications.
How we put this together
This is an evidence-based guide built from each tool's listing in our directory, which is compiled from the vendor's own site and pricing page. It is not a review based on using the tools. We don't rank tools, and nobody paid to be included. Some outbound links may be affiliate links; see our disclosure.
Frequently asked questions
Is there a free way to write a cover letter with AI?
Partly. Rezi has a Free plan and Huntr has a Free plan, but Huntr's AI cover letters need Pro. ResumeBuild.ai has a free Basic plan with 1 resume and 3 downloads. Sheets Resume Builder lets you build a full resume before paying and lists free cover letters. Limits change, so check each listing.
Can AI write a good cover letter?
It can produce a solid first draft, but a draft is not the finished letter. The tool does not know your real story, so you must add specific examples and remove generic lines. Read the final version aloud before you send it.
Will employers know I used AI?
Some employers ask about AI use and some do not. Follow any rules in the job posting, and make sure the letter reflects your own experience and voice. Do not claim anything you cannot back up in an interview.
Which tool is good for writing a cover letter on a phone?
Most of the tools here list web access, and Rezi and Huntr also list a Chrome extension, which is a desktop browser feature. None of the listings describe a phone app for cover letters, so test the web version on your phone before relying on it.
How long does it take to write a cover letter with AI?
The tools don't publish a standard time, and the real time goes into editing. As a rough editorial estimate, plan under an hour for your first letter, including gathering examples and checking facts. Later letters are faster once your resume is loaded.
Compare more options in our Writing category. Next, see How to write a resume with AI that passes ATS.
