The short answer
The best AI for job applications in 2026 is Claude by Anthropic, because it tailors CVs and cover letters while keeping your voice and explains every change, and its Docs export to Word or Google Docs on the free plan. ChatGPT is the runner-up, with unlimited free text chats and ChatGPT for Word on every plan. Grammarly Free is the best free final check. Switch off training before pasting your CV, and never let AI invent experience.
| Our pick | Claude, by Anthropic |
|---|---|
| Runner-up | ChatGPT, by OpenAI |
| Best free option | Grammarly Free, by Superhuman |
| Best use | Decoding adverts, tailoring CVs, cover letters, interview practice |
| First step | Switch off training in the tool before pasting your CV |
| Golden rule | Never let AI add experience you do not have |
Our pick for job applications: Claude
Why: a good application is careful writing about one specific job, and that is Claude's strength. Claude, made by Anthropic, is good at keeping your meaning and your voice while cutting a CV bullet from 40 words to 15, and at telling you plainly which part of a cover letter is weak and why. Give it the job advert, your CV and one piece of writing that sounds like you, and ask it to explain every change; you end up with a better application and a better sense of how to write the next one. Claude Docs export to Word, PDF, Markdown or Google Docs, on every plan including Free, so the result is a document you can send rather than text to reformat.
Who it suits: anyone applying for professional roles where the cover letter and CV are read closely, and career changers who need help explaining how their experience transfers.
The catch: the free plan uses Claude Sonnet and Haiku with limits that reset every five hours and weekly, so a long evening of applications can run out. Your CV is personal data, and on the Free, Pro, Max and Ultra plans Anthropic can use chats for training unless you switch off Help Improve our AI models in Settings, then Privacy. Do that before you paste anything. See our Claude guide.
Runner-up: ChatGPT
Why: ChatGPT, made by OpenAI, gives unlimited text chats on the free plan with GPT-6 Luna, which suits the back and forth of tailoring many applications. Since 17 September 2026 ChatGPT for Word works on every plan, including Free, so you can edit your CV in Word with ChatGPT beside it. On Plus, projects keep each job search organised with its files, and memory remembers your background so you do not have to paste your CV into every chat. Voice mode is useful for practising interview answers out loud.
Who it suits: people applying for many roles at once, and anyone who writes their CV in Microsoft Word.
The catch: on Free, Plus and Pro, Improve the model for everyone is on by default (Settings, then Data controls), and the free plan's Instant context window is about 27,000 tokens, roughly 12 pages. ChatGPT also tends to produce polished, generic phrasing that recruiters recognise, so always edit the result into your own words. Compare the two in ChatGPT vs Claude.
Best free option: Grammarly Free, for the final check
Why: a typo in a cover letter costs more than a weak sentence. Grammarly, now part of the Superhuman suite, checks grammar and spelling wherever you type, including in job portals and email, and its free plan includes tone detection and 100 AI prompts a month.
Who it suits: everyone, as the last step before you press submit, and especially non-native English speakers polishing professional text.
The catch: the free plan does not rewrite full sentences or adjust tone, which need Pro. Product Improvement and Training is on by default for Free accounts; switch it off at account.grammarly.com/security/privacy. Read our Grammarly guide.
The honest rules for using AI in a job application
- Never invent anything. AI will happily add a skill, a number or a title you never had if it makes the sentence stronger. Check every claim against what you actually did, because you will be asked about it in the interview.
- Keep your voice. Give the AI something you wrote yourself and ask it to match the tone. Read the final version aloud: if it does not sound like you, change it.
- Tailor, do not mass-produce. One focused application built around the employer's real needs beats ten generic ones.
- Remove what you do not need to share. Your address, date of birth and references rarely need to go into an AI chat. Paste the experience, not the identity.
- Expect AI on the other side. Employers may use software to sort applications. Under the EU AI Act, AI systems intended to analyse and filter applications or evaluate candidates are classed as high risk, and the European Commission says those rules apply from 2 December 2027. Clear headings, the employer's own terms for the skills you have, and a plain file format help both software and people read your CV. More on the employer side is in the best AI for HR and recruiting.
How to choose an AI tool for job applications: three questions
- How many applications are you sending? A few carefully chosen roles: Claude, for the quality of the writing. Many roles: ChatGPT, for unlimited free chats and memory on paid plans.
- Where do you write? In Word, ChatGPT for Word works on every plan. In Google Docs, Claude Docs exports straight there. In job portals and email, Grammarly checks as you type.
- Do you need help with the interview too? Then choose a tool with voice: ChatGPT voice mode lets you practise answers out loud. Our guide to preparing for an interview with AI covers the steps.
Workflow: one tailored application, from advert to follow-up
- Switch off training. Before pasting your CV, turn off the training setting in whichever tool you use, or use a temporary or incognito chat.
- Decode the advert. Paste the job advert and ask for the five things the employer cares about most, the exact terms they use and anything implied but not stated.
- Match your evidence. Paste your CV and ask for a table: each requirement, your best piece of evidence and any gap. Fill gaps with real experience the AI does not know about.
- Tailor the CV. Ask for rewritten bullets for the most relevant role, each starting with an action and ending with a result you can prove. Check every number.
- Write the cover letter. Ask for a short letter built around two or three pieces of evidence and one reason you want this employer in particular. Then edit it into your voice.
- Proofread. Run the final CV and letter through Grammarly, then read both aloud once.
- Prepare for the interview. Ask for the ten most likely questions for this role and practise answers out loud, using your real examples.
- Follow up. After an interview, ask for a short thank-you email that mentions one specific point from the conversation.
More help is in how to write a CV with AI, our CV prompts and interview prompts.
8 job application prompts to copy
Replace the [placeholders]. Paste your experience, not your personal details, and check every claim in the output against what you really did.
Prompts to copy
Decode a job advert
Here is a job advert: [paste]. List the five things this employer cares about most, in order, with the exact words they use. Then list two things the advert implies but does not say, and three questions I could ask in the interview to show I understood the role.
You get: What the employer really wants, in their own words
Match your evidence to the role
Compare my CV: [paste experience only] with this job advert: [paste]. Make a table with each key requirement, my strongest matching evidence and a rating of strong, partial or missing. Do not invent experience. For each gap, suggest what kind of real example I could add.
You get: An honest gap analysis before you start writing
Rewrite CV bullets with results
Rewrite these CV bullets for a [target role]: [paste]. Each bullet should start with a strong verb, stay under 20 words and end with a result. Use only facts I have given you; where a result is missing, write [ADD NUMBER] instead of guessing.
You get: Sharper bullets with placeholders where you need real numbers
Write a cover letter in your voice
Write a cover letter for [role] at [company], under 300 words. Use these two pieces of evidence: [paste], and this reason I want to work there: [reason]. Match the tone of this piece of my own writing: [paste]. No clichés such as 'I am writing to apply'. Then list the three sentences most likely to sound generic.
You get: A focused letter plus the lines to rewrite yourself
Explain a career change
I am moving from [current field] to [target role]. Here is my experience: [paste]. Write a three-sentence summary for the top of my CV and a short paragraph for my cover letter that explain how my experience transfers, using concrete examples, without apologising for the change.
You get: A clear, confident story for a career change
Critique before you send
Act as a busy hiring manager for [role]. Read my CV and cover letter: [paste]. In 30 seconds of reading, what stands out, what is unclear and what would make you stop reading? Give five specific improvements, ranked by impact.
You get: A frank first-impression review
Practise likely interview questions
List the ten questions I am most likely to be asked for [role] at [company], given this advert: [paste]. For each, say what the interviewer is really checking and which of my examples fits best: [paste examples]. Then ask me the first question and wait for my answer.
You get: A mock interview built around your own examples
Send a specific thank-you email
Write a thank-you email to [interviewer name] after my interview for [role]. Mention this point from our conversation: [detail], and add one sentence on why it makes me more interested in the role. Under 120 words, warm and professional.
You get: A short follow-up that is clearly not a template