Recruiters spend about seven seconds on a first resume scan. Applicant tracking systems spend even less, matching keywords before a human ever looks. That is brutal, but it is also exactly the kind of pattern-matching game AI is good at. We tested three AI writing tools by rebuilding a real mid-career resume for three different job postings.

We judged them on what actually gets interviews: clear impact statements, keywords that match the job post, and language a human hiring manager enjoys reading. Here is how they ranked.

A quick note on method. We rebuilt the same real resume three times, once per job posting, using each tool's free tier first and paying only where a free tier could not do the job. Prices are approximate and change often, so treat them as a guide rather than a quote. One principle shaped every pick below: a resume tool should help your real achievements land harder. It should never invent new ones, and we marked down anything that tempted us to fake it.

🥇 ChatGPT: best for tailoring your resume to each job

The highest-leverage resume trick is tailoring: rewriting your resume for each job post so it mirrors the keywords and priorities the employer listed. ChatGPT does this in seconds. Paste your resume and the job description, ask it to rewrite with matching keywords, and you get a targeted draft that would take an hour by hand.

The free tier handles this easily. Plus at around $20 a month is only worth it if you are applying at serious volume. ChatGPT is also good at turning weak bullets into strong ones. 'Responsible for social media' becomes 'Grew Instagram following 40% in six months through daily Reels.'

The danger is fabrication. ChatGPT will happily invent achievements, inflate numbers, and add skills you never had. Every bullet must be checked against reality. It also makes every resume sound faintly identical, so keep your own voice in the final version or you will blend into the pile.

🥈 Claude: best for human-sounding rewrites

Claude writes the most natural-sounding resume copy of the three. Where ChatGPT can feel mechanical, Claude keeps your voice while cutting fluff and sharpening weak verbs. 'Helped with' becomes 'led', 'worked on' becomes 'shipped'. Hiring managers read hundreds of these. The one that sounds like a real person wins.

Pricing matches ChatGPT: a generous free tier, Pro around $20 a month. Claude is especially good at the summary section, the two or three lines at the top that most people write terribly. Give it your experience and it drafts a summary that actually says something.

Weaknesses: it tends to write long, so you will cut. And like every AI, it cannot know which of your achievements matter most. It will polish everything equally, including the bullet you should have deleted.

🥉 Grammarly: best for final polish inside your document

Grammarly does not write your resume. It perfects it. Working inside Google Docs or Word, it catches the grammar slips, the repeated words, the passive sentences that make a resume feel tired. Its tone suggestions are genuinely useful here: it flags when you sound unsure, which is fatal in a resume.

The free version covers basic fixes. Premium at around $12 a month adds clarity rewrites and tone checks, which is where the resume value lives. One month of Premium during an active job hunt is money well spent.

The limit is scope. Grammarly polishes sentences; it will not tell you your resume has the wrong structure, buries your best achievement on page two, or needs tailoring for the job. Use it last, after an AI has helped with content.

So which one should you pick?

Applying to many jobs? ChatGPT's tailoring trick is the highest-return move in this list, and it is free. Want your existing resume to sound sharper and more human? Claude's rewrite. Already happy with the content and just want it flawless? Grammarly Premium for one month.

Our honest stack: ChatGPT free to tailor each application, Claude free for the final rewrite pass, Grammarly Premium for one month at $12 during the hunt. Total cost for a serious job search: about $12. And one rule that matters more than any tool: never let AI invent a single achievement. Everything on the page has to be true.