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 26 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, no credit card.
Trusted by 179+ founders
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.
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.
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.
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.
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...”
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.
Voice training from sample posts
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.
26 AI models to write with
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.
Tone and audience calibration
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.
Sentence rhythm matching
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.
Edit and refine loop
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.
BYOK keeps writing affordable
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.
7-day Pro trial included - No credit card required
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.
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.
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.
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.
Paste 3 to 5 sample posts
2 minPick 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.
Brief the writer on the post
2 minEnter 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.
Refine and publish
1 minOpen 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.
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
LinkedGrow + BYOK
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.”
Nina 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.”
Marcus 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 $19. Best LinkedIn investment I have made.”
Jessica L.
Recent Graduate, 2K Followers
AI LinkedIn Writer FAQ
Common questions about the AI LinkedIn writer and voice training
Still have questions?
We're here to help. Reach out and we'll get back to you within 24 hours.
Contact SupportReady 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, no credit card, all 26 models included.