Which tool to choose
You don't need a paid tool to write a bio. Choose based on where you are right now:
- You have scattered material (an old resume, notes, experience in disarray) and want a bio built from scratch: use free ChatGPT. Free accounts can search the web, analyze data, upload images or files and produce text: a solid set of features for personal use. You upload the resume as a file and get going.
- You need to write LinkedIn's "About" section specifically and you already have a Premium subscription: use the built-in assistant. LinkedIn's AI writing assistant suggests personalized text for the Headline and the About section. It's handy because it already reads your data, but it's a Premium feature: without a subscription you don't see it.
- You work a lot with text and keep hitting limits: the free tier stops you at a message cap every few hours, after which the chat switches to a reduced model until the reset. For a single bio you won't notice it; if you write twenty in one session, consider Plus (€20/month).
For most people: free ChatGPT. That's where I'm taking you.
How to do it
An effective bio starts from who you are, who it matters to, and what concrete things you've achieved. The AI fills the form, but you supply the facts.
- Open ChatGPT (from a browser at chatgpt.com or from the app: the path is the same), with no need for a paid account.
- Gather your raw data: current role, years of experience, 2-3 measurable results (real numbers), the audience you're addressing (recruiters? clients? readers?) and where the bio will end up.
- Paste the prompt below filled in with your data. Don't leave fields empty: the more specific you are, the less the AI invents.
- Read the first version and verify every number and every company name against reality.
- Ask for the variants you need: a short one for the email signature, a long one for the website.
The operational syntax:
Write my professional bio in Italian, first person, professional but warm
tone. Length: 80 words.
Open with the strongest result, not with "I am a...".
No empty adjectives like "passionate", "dynamic", "results-
oriented": use only concrete facts.
Here is my data:
- Role: [your role]
- Years of experience: [number]
- Concrete results with numbers: [e.g. "reduced delivery times by 30%"]
- Who I'm writing for: [recruiters / clients / readers of my blog]
- Where it will go: [LinkedIn / personal website / email signature]
Don't add results or data I haven't provided. If you're missing
information, ask me for it instead of inventing it.
Feedback: a good bio after this prompt opens with a verifiable fact, stays within the requested length and doesn't contain a single number you didn't write. If you see a percentage you don't recall giving, the AI invented it: delete it.
For LinkedIn, keep an eye on the space: the About section goes up to about 2,600 characters. Use them, but aim for a substantial block (1,500 characters and up) only if you have real material to put in it. On person: first person, almost always. LinkedIn is a social network where you address other professionals, and "I" sounds more direct than press-release tone.
Concrete example
Marta has been a project manager for six years, she changed jobs and has an empty LinkedIn "About" section. She opens free ChatGPT and pastes the raw data: "PM for 6 years, managed the launch of an app that reached 50,000 downloads in the first quarter, I lead teams of 8 people, I write for recruiters in the tech sector".
ChatGPT gives her back a draft that, however, opens with "I am a passionate, results-oriented project manager" and adds "with a 95% client satisfaction rate", a number Marta never provided.
Marta deletes the sentence with the 95% (made up), then asks: "Rewrite it opening from the app result, remove 'passionate and results-oriented'". The second version opens with "I took an app to 50,000 downloads in the first quarter while leading a team of eight people". Marta copies it, pastes it into the About section, trims it by two lines by hand. Total time: seven minutes, bio published.
When it does NOT work (and how to fix it)
If the AI invents the numbers
It's the most frequent problem: the AI fills the gaps with plausible but false percentages and awards. Fix: reread figure by figure comparing against reality, and in the prompt always keep the line "don't add data I haven't provided". If you don't remember a number with certainty, remove it: an honest bio beats an inflated one that collapses at the first interview.
If it sounds generic and could be anyone's
It happens when you've given it few details and the AI compensates with clichés. Fix: answer the question "what have I done that someone else in my role hasn't?" and paste that detail back into the prompt. A concrete project, a well-known client, a problem solved in a particular way: that's what sets you apart.
If it blocks you for a message limit
You're iterating too much and the free tier stops you. Fix: instead of asking for twenty micro-rewrites, gather all the changes into a single message ("shorten to 60 words, remove the last sentence, move the result to the opening"). You solve it in two or three exchanges instead of ten. If it really blocks you mid-work, continue with the reduced model that takes over at the reset: for polishing a bio it's more than enough.
If LinkedIn's AI assistant doesn't appear
You look for it in the About section but can't find the button. That's normal without Premium: the feature is reserved for subscribers and appears next to the editable profile fields or in the area that collects the Premium features. Fix without paying: write the bio in free ChatGPT and paste it by hand into the About field. Identical result, zero cost.
A tip from someone who actually uses it
Don't have the AI write the first sentence cold. Write it yourself, even badly, in ten words: "I helped three startups triple their sign-ups". That raw but true line is gold, because it contains your real fact. Then you hand it all to the AI and ask it to polish it, not invent it. The result sounds like you, not like a press release, and that's the only thing a recruiter or client perceives in two seconds.
Frequently asked questions
How long should my bio be?
It depends on where it goes. For an email signature or a Twitter profile, 30-50 words. For LinkedIn you have more room, up to about 2,600 characters: an About section full of substance engages more than a terse one, but every word must have a purpose, not fill space for length's sake.
Should I write in first or third person?
First person almost always, especially on LinkedIn. Third person makes sense only for executives who use LinkedIn as a formal showcase. For a company "About us" page third person fits; for a personal page, address the reader in first person.
Can I use the same bio from my resume on LinkedIn?
As a starting point yes, but it needs to be expanded. The resume summary is 3-5 concise sentences; on LinkedIn you have room to tell the journey, not just list it. Take that base and add context, motivations and a result that didn't fit in the resume.
Do I need the paid version of ChatGPT for a decent bio?
No. For one or two bios the free plan is enough: it reads your files, browses the web and produces polished text. You pay for Plus only if the AI is a daily work tool and you hit the limits every day. To write your profile, the free tier does the whole job.
Can a recruiter tell the bio was written by AI?
They can tell when it's written only by AI: generic opening, "passionate and results-oriented", zero numbers, all smooth and anonymous. They can't tell when the AI has polished your real facts. The difference isn't the tool, it's the material you give it: if you put in a concrete result and a raw sentence of your own, what comes out sounds human because it starts from you. The risk isn't "using AI", it's handing over the first draft without touching it.