Bio prompts · Identity + proof + value

10 AI prompts for X bios that convert profile visits

An X bio has 160 characters to convert a profile visit into a follow. The conversion formula: identity + proof + value-promise. These 10 prompts produce bios that hit all three — copy-paste ready for ChatGPT, Claude, or Gemini.

Most AI-generated bios miss at least one of the three components (identity / proof / value-promise). The prompts below force the AI to include all three, structure them for scannability, and stay within the 160-char limit. Variables in {curly braces}.

The prompts

Prompt #1

Build-in-public founder bio

Generate 3 X (Twitter) bio variants for a build-in-public founder. Context: building {product} to {goal}. Currently at {current state}. Sharing daily on {topics covered}. Each bio max 155 characters. Format: 3 short phrases separated by bullets or periods. Include: identity (founder), proof (specific number / milestone), value-promise (what readers get by following). No emojis. No 'changing the world' language.

Why it works

Build-in-public bios convert at high rates because the audience sees specifics. The 3-variants output lets you pick the strongest; constraints prevent the typical AI-bro language.

Best for

Claude (best at the specifics + anti-bro tone).

Variables to fill in

{product}{goal}{current state}{topics covered}

Prompt #2

Newsletter writer bio

Generate 3 X bio variants for a newsletter writer. Context: writes about {topic}. Has {subscriber count} subscribers. Newsletter cadence: {weekly/biweekly/etc.}. Each bio max 155 chars. Format: profession + sub count proof + topic + cadence + 'Free: [link]' Tone: confident, not boastful. Avoid 'thoughts on' or 'musings about' — be specific.

Why it works

Newsletter writer bios benefit from the sub count proof + cadence (predictability matters to readers). The 'avoid musings' filter prevents the typical writer-bio fluff.

Best for

Claude or GPT-4. Both produce solid output.

Variables to fill in

{topic}{subscriber count}{newsletter cadence}

Prompt #3

B2B SaaS marketer bio

Generate 3 X bio variants for a B2B SaaS marketer. Context: works at / consulted with {company examples}. Specializes in {specific marketing area — e.g., SEO / content / paid acquisition}. Free resource to offer: {resource}. Each bio max 155 chars. Format: role + niche + proof (specific outcomes if possible) + free CTA. No 'passionate about' phrasing. No 'helping companies grow'.

Why it works

B2B marketer bios need niche specificity (general 'marketer' bios don't convert). The 'avoid passionate about' filter strips the most common AI-marketer bio cliches.

Best for

Claude (best at niche-specific tone).

Variables to fill in

{company examples}{specific marketing area}{resource}

Prompt #4

Indie hacker / solopreneur bio

Generate 3 X bio variants for an indie hacker / solopreneur. Context: building {projects}. Current MRR / revenue: {amount}. Sharing {topics}. Each bio max 155 chars. Format: identity + current state + topics + lead capture. Tone: matter-of-fact, slightly self-deprecating. Avoid 'crushing it', 'killing it', emoji rockets. Specific numbers required.

Why it works

Indie hacker bios convert when they're specific and lightly self-deprecating (audience reads grandiosity as larping). The 'no emoji rockets' guardrail removes the most common indie-bio cliche.

Best for

Claude (best at the anti-grandiose tone).

Variables to fill in

{projects}{amount}{topics}

Prompt #5

Coach / advisor bio

Generate 3 X bio variants for a coach or advisor. Context: helps {audience} with {outcome}. Track record: {specific outcomes — e.g., '23 clients placed in 2024'}. Free intro offer: {offer}. Each bio max 155 chars. Format: audience-specific role + proof + free CTA. Voice: confident, specific. No 'transformational coaching' or 'unlocking potential'.

Why it works

Coach bios convert via specific outcomes, not generic 'I help you'. The 'no transformational' filter removes the most common AI-coaching language.

Best for

Claude 3.7+ (best at specifics).

Variables to fill in

{audience}{outcome}{specific outcomes}{offer}

Prompt #6

Technical / developer bio

Generate 3 X bio variants for a developer or technical creator. Context: tech stack — {stack}. Open source project — {project} ({star count} stars). What they share — {topics}. Each bio max 155 chars. Format: identity + tech stack + OSS proof + content angle. Voice: direct, no marketing-speak. Star count is the key proof if it's substantial.

Why it works

Technical bios convert via stack specificity + OSS proof. The 'no marketing-speak' filter prevents AI from adding 'passionate developer' fluff.

Best for

Claude or GPT-4. Both produce strong output.

Variables to fill in

{stack}{project}{star count}{topics}

Prompt #7

Anti-hype / contrarian bio

Generate 3 X bio variants for a creator with an anti-hype positioning in {niche}. Context: shares {topics} but distinct from the 'hype' version of the niche. Specifically NOT-: {what they don't do}. Each bio max 155 chars. Format: identity + niche + anti-positioning + free CTA. Voice: confident, slightly cynical, not snarky. The 'NOT' framing is the differentiator — make it clear.

Why it works

Anti-hype bios convert in noisy niches (crypto, fitness, productivity) because readers tired of standard hype identify immediately. The 'not snarky' filter prevents the bio from feeling negative.

Best for

Claude (best at the cynical-but-not-snarky tone).

Variables to fill in

{niche}{topics}{what they don't do}

Prompt #8

Multi-platform creator bio

Generate 3 X bio variants for a creator with multiple platforms ({platforms}). Context: primary channel — {primary}. Other channels — {others}. Single lead-magnet CTA — {magnet}. Each bio max 155 chars. Format: identity + primary platform + secondary platforms (short) + single CTA. Voice: organized. Don't list 5+ platforms — pick the strongest 2-3 to mention.

Why it works

Multi-platform creators often have cluttered bios listing every channel. The '2-3 platforms' guardrail keeps the bio scannable; the 'single CTA' rule prevents 5 competing calls-to-action.

Best for

GPT-4 (best at the prioritization constraint).

Variables to fill in

{platforms}{primary}{others}{magnet}

Prompt #9

Niche professional bio

Generate 3 X bio variants for a niche professional (e.g., doctor, lawyer, financial advisor) sharing accessible content. Context: profession — {profession}. Specialization — {specialization}. Content angle — {angle}. Each bio max 155 chars. Format: credentials + niche + content angle + CTA. Voice: authoritative but accessible. The accessible-content angle is the differentiator — make it clear.

Why it works

Niche professional bios convert when they signal 'I'll explain things you don't get from other professionals'. The accessibility angle prevents the bio from reading as just a resume.

Best for

Claude (best at the authority-but-accessible blend).

Variables to fill in

{profession}{specialization}{angle}

Prompt #10

Career-transition bio

Generate 3 X bio variants for someone in a career transition. Context: previous role — {previous}. Current pursuit — {current}. Content angle — {angle}. Each bio max 155 chars. Format: transition narrative + current focus + value to readers. Voice: confident in the transition, not 'lost in transition'. Use specifics from BOTH the previous and current.

Why it works

Career-transition bios convert because the audience identifies with the journey. The 'confident in transition' tone prevents the bio from sounding uncertain or apologetic.

Best for

Claude (best at narrative tone).

Variables to fill in

{previous}{current}{angle}

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Common questions

How long should an X bio be?+

Use 130-155 characters of the 160 available. Under 100 looks sparse; maxing 160 can look cluttered on mobile. The 'sweet spot' is 3-4 short phrases separated by bullets / dashes / periods. Profile visitors scan, not read — visual density and clear structure matter as much as content.

Should I include a link in my X bio?+

Yes, almost always. The bio link is your single most-clicked CTA — typically 5-20× the click-through rate of any individual tweet's link. Point it at a newsletter signup, lead magnet, or free tool. Don't point it at a generic homepage; those convert poorly compared to specific destinations.

Will AI-generated bios sound like everyone else's?+

Yes if you use generic prompts. The prompts above include 'avoid X language' filters (no 'passionate about', no rocket emojis, no 'transformational') that prevent the most common AI-bio cliches. Generate 3 variants per prompt, pick the strongest, edit for your specific voice. The edit is what differentiates.

Should I update my bio frequently?+

Update when something material changes (new milestone, new offer, new positioning). Don't update weekly chasing engagement — your bio is part of your brand consistency. Most strong accounts update bios 2-4 times per year. The exception: launch days, where you might update for 1 week to highlight a specific offer.

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