AI cover letter generator
A cover letter written from your resume, not made up
Pick your resume, paste the job posting, and get a tailored cover letter in seconds. Every claim is checked against your resume, and the PDF matches it.
Part of Pro, $15 a month. Build your resume free first, no card needed.
Alex Rivera
Senior Backend Engineer · alex.rivera@example.com
Dear Hiring Manager,
At Northwind Payments I cut checkout p99 latency from 1.4s to 380ms by replacing a synchronous ledger write with a durable queue. Your posting asks for someone who can own reliability across the payments path, and that is the work I’ve done for the last four years.
I also led the migration of 40 services off a shared Postgres instance, and I’d bring the same care to your platform team.
Check these details in the draft before sending it. They aren’t in your resume, so edit or remove them:
- “the last four years”: your resume dates this role from April 2021, not four years.
How it works
A tailored letter in three steps
01
Pick your resume
The letter is written from the resume you choose, so it uses your real roles, results and skills.
02
Paste the job posting
Add the company, the role and the posting. The draft connects your experience to what the job asks for.
03
Edit, then download
Get a draft in seconds. Edit it freely, change the tone in one click, and download a PDF that matches your resume.
Why it's different
Built so nothing invented reaches a hiring manager
Most AI cover letters sound the same and quietly add experience you don't have. This one is written only from your resume and checked before you send it.
- Checked for made up claims
- A second, independent pass compares the letter with your resume and flags any detail it can't find, such as a team size or a number you never mentioned.
- Tailored to the posting
- It opens with the role and your strongest reason to fit, then connects two or three of your achievements to what the posting says the job needs.
- Styled to match your resume
- The letter uses the same header and template as your resume, so the two look like a set when you send them.
- Shorter, more formal or warmer
- Rewrite the whole letter's tone in one click, and keep editing by hand whenever you like.
- No clichés
- No "I am writing to express my interest", no "passionate team player". Three or four short paragraphs in plain, confident language.
- A clean PDF, one page
- Download a typeset PDF, dated and addressed, ready to attach to your application.
Writing it yourself?
A good cover letter is three or four short paragraphs: the role and why you fit, two or three achievements tied to what the job needs, and a brief, confident close. Our guide covers the structure, strong openings and a full example.
How to write a cover letterStart with a strong resume
The letter is only as good as the resume behind it. See resume examples for your job, pick an ATS friendly template, or check your current resume with the free ATS checker.
Questions
Is the cover letter generator free?
Cover letters are part of Sembis Pro, at $15 a month. The resume builder itself is free, so you can build your resume first and upgrade when you're ready to apply.
Will the AI make things up about me?
It's instructed to use only facts from your resume and the posting, and never to invent employers, numbers, skills or reasons. A second pass then checks the finished letter against your resume and lists anything it can't support, so you can fix it before sending.
Do I need a job posting?
It works best with one, because the letter connects your experience to what the job asks for. Without one, it writes a general letter for the role and company you enter.
Can I edit the letter?
Yes. The draft is yours to edit freely. You can also ask for a shorter, more formal or warmer version of the whole letter.
How many cover letters can I write?
Each draft or rewrite uses one AI credit, and Pro includes 100 credits a month, shared with the other AI features. Editing by hand and downloading PDFs never use credits.
Your resume and cover letter, as a matching set.
Build your resume free, then write a tailored cover letter for every application on Pro.