How to Write a Cover Letter with Free AI Tools
Write a cover letter that actually gets read — tailored to the job, in your voice, with Claude and free tools. No templates that scream "AI wrote this".
The Free Cover Letter Stack
Two tools are all you need. The key is the prompting strategy — not the tools.
https://claude.ai
📝 Google Docs — free formatting and sharing
https://docs.google.com
Why not a cover letter generator? Generic tools produce generic letters. Recruiters read hundreds of AI cover letters that all sound the same. The prompts in this guide make yours sound like you wrote it — because you will guide every word.
Extract What Makes You the Right Fit
Before writing a single word, do this analysis. It takes 10 minutes and makes your letter 10x better because you know exactly what to emphasize.
"I am applying for this job. Analyze the job description and my background, then tell me:
1. The 3 most important things they are looking for
2. Which parts of my experience match best
3. Any gaps I should address honestly
4. One unique angle I could use to stand out
Job description:
[paste the full job description]
My background:
[paste your resume or describe your experience in 3-5 sentences]"
Write the Cover Letter — The Right Structure
A cover letter that gets read has exactly 3 paragraphs. Not 5. Not 7. Three. Here is the structure and the prompt to generate it.
"Write a cover letter for this job application. Use exactly 3 paragraphs:
Paragraph 1 (Hook): Start with one specific thing about the company or role that genuinely interests me — not generic praise. Connect it immediately to why I am a fit.
Paragraph 2 (Evidence): Highlight 2-3 specific achievements from my background that directly match what they need. Use numbers where possible. Be specific, not vague.
Paragraph 3 (Close): Express enthusiasm, invite next steps, end confidently. No 'I hope to hear from you' — something more direct.
Tone: [professional / conversational-professional / enthusiastic]
Length: 250-300 words maximum
Do NOT start with 'I am writing to apply for'
Job description:
[paste]
My relevant background:
[paste 3-5 bullet points from your resume that are most relevant]"
Make It Sound Like You, Not a Robot
The first draft from Claude will be good but it will sound slightly generic. This step removes the AI polish and adds your real voice.
"Here is my cover letter draft. Rewrite it so it sounds more like a real person wrote it. Specifically:
- Replace any corporate buzzwords ('passionate', 'leverage', 'synergy', 'dynamic')
- Make the opening line more direct and specific
- If any sentence could appear in ANY cover letter, rewrite it to be specific to THIS company
- Add one small personal detail or specific observation that shows I did real research
[paste the draft]"
Red flag phrases to eliminate:
❌ "I am passionate about..."
❌ "I would be a great asset to your team"
❌ "I am a quick learner"
❌ "I have always admired your company"
❌ "Please find my resume attached"
Tailor It for Every Application in 5 Minutes
The fastest way to lose a job application is to send the same cover letter to every company. But tailoring does not have to take long — here is the 5-minute tailoring process.
"I have a cover letter I used for a previous application. I need to tailor it for a new job. Make the minimum changes needed to:
1. Match the specific language and keywords from the new job description
2. Replace any company-specific references with the new company
3. Adjust the emphasis to highlight the skills most relevant to this role
4. Keep my voice and all my personal examples — only update what is necessary
My existing cover letter:
[paste]
New job description:
[paste]"
Some outbound links on this page are affiliate links. If you sign up through one we may earn a commission, at no extra cost to you. This never affects which tools we list or how we rank them.