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AI Writer for LinkedIn

Free AI LinkedIn post writer trained on your voice

An AI writer that captures your sentence rhythm, vocabulary, and tone. LinkedGrow is not just a post generator. It is an AI writer that studies how you write before it writes for you. Paste 3 to 5 of your best posts, pick one of 43 AI models from OpenAI, Anthropic, Google, Grok, Perplexity, or Kimi, and the writer produces drafts your audience cannot tell apart from your manual ones. 7-day Pro trial, everything included.

Voice-matched writing43 AI modelsBYOK pricing

7-day Pro trial · Everything included · All 43 AI models included

179+ founders already run their LinkedIn with LinkedGrow

Most AI writers ignore how you actually write.

Generic AI output kills your LinkedIn credibility. LinkedIn readers spot AI-written posts in two seconds. The reason is simple. Most tools feed your topic into a single model with a templated prompt and ship the first draft. No voice analysis, no rhythm matching, no tone calibration. The result is content that reads like every other post in your feed.

01
0

Free generators take your topic and produce one of a few templated patterns. There is no voice analysis step. Whether you write in short punchy lines or long flowing paragraphs, the output looks identical to what everyone else gets.

02
Same

Most AI writing tools rely on the model's default cadence. Three-sentence intro, bullet list, conclusion question. Your audience has read that exact structure on twenty other posts this week. There is no signal that you wrote it.

03
1

Most free LinkedIn writers lock you into one model. If that model produces flat output for your industry, you have no recourse. Different models have very different writing styles. The writer should choose, not the tool builder.

04
Generic

Free writers default to one register, usually mid-corporate. They do not know if your audience is founders, recruiters, or developers. The same topic written for a CTO crowd should not read the same as one written for HR leaders. Most tools ignore this entirely.

The AI posts I generated last quarter all sounded like the same person wrote them, and that person was not me...

Built to Write, Not Just Generate

An AI writer that learns your voice first

LinkedGrow runs a voice training pass before any post is written. Paste your samples once, calibrate tone and audience, and every draft after that starts from your style fingerprint - not a generic prompt.

Train your voice free

Voice training from sample posts

Core

Paste up to 5 of your strongest LinkedIn posts. The writer extracts your sentence length distribution, vocabulary preferences, opener patterns, and rhetorical habits. Every subsequent draft is grounded in that fingerprint, not in the model's default cadence.

  • 5 sample posts max
  • Style fingerprint extracted
  • Reused on every draft

43 AI models to write with

BYOK

Switch the writer's underlying model on every draft. GPT 5.2 for analytical posts, Claude Opus 4.7 for narrative-heavy ones, Gemini 3 Pro for research-style takes. Different models write differently and you get to pick.

  • 6 providers supported
  • Switch per draft
  • Always latest versions

Tone and audience calibration

Setting

Configure who reads you - founders, recruiters, marketers, engineers - and which register you want. The writer adjusts vocabulary, jargon level, and reference density to match. Same topic, different audience, different post.

  • Audience profile field
  • Tone presets
  • Per-post overrides

Sentence rhythm matching

Built-in

The writer reproduces your sentence-length variation. If your samples open with a 6-word line then a 25-word line, the AI does the same. This is the single biggest signal that separates AI-written from human-written posts.

  • Length variation
  • Opener cadence
  • Paragraph density

Edit and refine loop

Workflow

A real writer does not ship the first draft. The editor lets you regenerate sections, tighten lines, swap hooks, or rewrite paragraphs in a different tone. The writer revises with full context of what you already changed.

  • Section regenerate
  • Tighten or expand
  • Hook swap

BYOK keeps writing affordable

Pricing

You bring your own API key from OpenAI, Anthropic, Google, Grok, Perplexity, or Kimi. LinkedGrow takes zero markup. Most users spend $2 to $4 per month on AI costs, even with daily writing.

  • Zero markup
  • $2 to $4 typical
  • Your own AI key
Simple Process

From sample posts to first draft in under 5 minutes

Voice training is the first step, not an upsell. Set it up once and every post the writer produces is grounded in your style.

Under 5 minutes total

01 · 2 min

Paste 3 to 5 sample posts

Pick your strongest LinkedIn posts - the ones that already sound like you on a good day. Paste them into the voice training field. The writer extracts your style fingerprint in a single pass and stores it on your account.

02 · 2 min

Brief the writer on the post

Enter a topic or rough idea, pick a post type, select your preferred AI model from 26 options, and choose a tone. The writer combines this brief with your voice fingerprint and audience profile to produce a draft that reads like you wrote it.

03 · 1 min

Refine and publish

Open the draft in the editor. Regenerate sections, swap hooks, tighten phrasing. When you are happy, publish directly to LinkedIn or save the draft for later. Voice training improves every time you mark a post as approved.

Why BYOK Beats Capped Writers

Other AI writers charge per word. We charge per month.

Most LinkedIn writing tools meter your output. You get 30 to 100 posts per month, then a paywall. LinkedGrow uses BYOK so the writer can produce as many drafts as you want, with no token caps.

Capped AI LinkedIn Writers

$49 to $199/month

  • Single AI model with no per-post switching
  • No voice training - templated prompts only
  • 30 to 100 post cap per month, even on paid plans
  • Output reads like the same writer no matter who uses it
  • Token markup of 3x to 10x over provider rates

LinkedGrow

$99/month$2 to $4/month BYOK

  • 7-day Pro trial with full Pro access
  • 43 AI models switchable on every draft
  • Voice training included on the trial
  • Unlimited drafts on every paid plan after the trial
  • BYOK with zero markup - pay providers directly

Unlimited drafts in your voice, for less than the cost of one capped competitor seat

Writers Who Found Their Voice

AI posts that finally sound like them

LinkedGrow users describe the difference voice training makes the first time the writer hands them a draft.

I tried several free LinkedIn generators before LinkedGrow. The others used outdated AI and had no voice training. LinkedGrow's 7-day Pro trial gave me the latest models, voice matching, and posts that actually sounded like me. Upgraded to Starter the same week.
NRNina R.Freelance Consultant, 4K Followers
The 7-day Pro trial was enough to prove the concept. I generated a week of posts, trained my voice, and published them to LinkedIn. The engagement was noticeably better than my manually written posts. Now I use the Starter plan and post 4 times per week.
MWMarcus W.Product Manager, 9K Followers
As a student, I could not afford $49 per month for a LinkedIn tool. LinkedGrow's 7-day Pro trial let me start building my professional presence with AI-generated posts. When I got my first job, I upgraded to Starter at $99. Best LinkedIn investment I have made.
JLJessica L.Recent Graduate, 2K Followers
26

AI models on trial

5

Sample posts for voice training

$0

Cost to start writing

$2-4

Typical monthly AI spend

Before you ask

AI LinkedIn Writer FAQ

Common questions about the AI LinkedIn writer and voice training

Still have a question?

Write one line about what you sell and we will answer honestly.

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A generator produces output from a topic and a templated prompt. A writer studies your voice first, calibrates to your audience and tone, then drafts in your style. LinkedGrow runs voice training before any post is written so the output reads like you, not like the default AI cadence.

3 to 5 of your strongest posts. The voice training field accepts up to 5 samples. More is not better here - quality matters more than volume. Pick posts that already sound like you on a good day and the writer will fingerprint your style in a single pass.

It depends on the post type. Claude Opus 4.7 tends to win on narrative and story posts. GPT 5.2 handles analytical and data-driven takes well. Gemini 3 Pro is strong for research-heavy content. The writer lets you switch on every draft so you can compare for your own niche.

Yes. Voice training is optional. Without samples the writer uses your audience and tone settings plus the model's default style. You will still get a usable draft - it just will not match your unique cadence. Most users find the lift from training is worth the 2 minutes it takes.

If you train your voice properly, no. Sentence rhythm matching is the single biggest tell that separates AI from human posts. Once the writer has your samples, it reproduces your length variation, openers, and paragraph density. Most users report their audience cannot tell trained AI posts from manual ones.

Pro is $99/mo with unlimited writing, image generation, analytics, and network notifications. Business is $179/mo and adds carousels, A/B testing, team collaboration, and API access. BYOK AI costs are typically $2 to $4/month with zero markup from LinkedGrow.

BYOK means Bring Your Own Key. You connect your API key from OpenAI, Anthropic, Google, Grok, Perplexity, or Kimi, and LinkedGrow uses it to write your posts. You pay the provider directly at their rates with zero markup. This is why the writer can offer unlimited drafts at $99/mo instead of $49 to $199 with caps.

Yes. Connect your LinkedIn account and publish drafts directly from the editor. Scheduling for future dates is unlimited on both Pro and Business.

Start Writing LinkedIn Posts in Your Voice

Ready to write LinkedIn posts that sound like you?

Paste 3 sample posts, brief the writer, and get your first draft in your voice in under 5 minutes. 7-day Pro trial, everything included, all 43 AI models included.

7-day Pro trial · Everything included · All 43 AI models · Voice training included