AI Ghostwriter for LinkedIn, X, and Reddit

Turn ideas into content 10x faster.Without sounding like every other AI post.

Your AI ghostwriter. It interviews you about your expertise, grounds every claim in your docs, and creates platform-optimized content you can refine until it's right.

Your idea
"hmm so we killed that feature everyone loved... and retention actually went up. need to write about this"
2.1s127 words
Ready to post
Transparent Founder

We killed our most popular feature yesterday.

Everyone said we were crazy.

But 30-day retention jumped 23%.

Sometimes the best product decision is removing what users think they want...

Sources: Strategy Doc, Linear Export
Tone: Transparent Founder
1 citation
Works with
LinkedIn
X
Reddit
more

How your AI ghostwriter works

01

The Interview

Each post starts with a quick interview. We ask about your topic, opinions, hot takes. Not prompts—a real conversation.

02

Your Knowledge

Upload product docs, blog posts, company facts. We read everything. Zero hallucinations.

03

Content Creation

LinkedIn posts. X threads. Reddit posts. Each platform optimized. Different personas for different contexts.

04

Refinement

Adjust tone. Change hooks. Try different lengths. Refinements are free. Iterate until you'd publish it.

05

Distribution

One-click publish to LinkedIn and X. Schedule ahead. Set up Content Series. Your ghostwriter handles the rest.

What your AI ghostwriter does

Quality content from your expertise. Grounded in your knowledge. Ready in minutes.

Never start from scratch

Your uploaded docs become a library of topics. AI writes posts with citations to your files—no hallucinations, just your real expertise.

Tonemark persona management - create multiple brand voices for LinkedIn and X content

Multiple Personas

Create personas for every context. Each with its own tone, style guidelines, and writing samples that shape how AI writes for you.

Knowledge grounding with citations - upload your docs and Tonemark cites every claim

Your Knowledge, Grounded

Upload your docs and expertise. Every claim Tonemark makes is cited back to your sources. No hallucinations—just your real knowledge.

One-click publishing to LinkedIn and X - schedule posts or publish instantly from Tonemark

Publish in One Click

Schedule or post directly to LinkedIn and X. No copy-paste needed.

Coming Soon
Content series planning - automate recurring LinkedIn content themes on autopilot

Content Series

Put your content on autopilot. Plan weeks ahead with recurring themes.

Refine Until Perfect

Not quite right? Give feedback, adjust tone and length, regenerate hooks. Iterate until it's exactly what you want to publish.

Simple, right? Generate your first post in 2 minutes.

Try it free

No credit card required

One ghostwriter. Many contexts.

5 Power Personas optimized for different platforms. Clone any to create your own.

The Storyteller
★★★★★
The best career advice I ever got came from a janitor. I was 23, standing outside a conference room at 2am, trying to rehearse my first big presentation. Hands shaking. Throat dry. He was emptying trash cans. Noticed me pacing. "Everyone's too busy worrying about themselves to notice your mistakes." He was right. Fifteen years later, I still hear his voice every time I'm nervous.
NarrativeEmotionalPersonal

Who uses an AI ghostwriter?

Same expertise. Different contexts. Each optimized for its purpose.

USE CASES
Use CasesExperts

Turn knowledge into authority

100 voice memos. 50 half-written threads. Ideas die in Apple Notes because polishing takes hours. LinkedIn feels like 'marketing BS' but you know visibility matters. Tonemark turns brain dumps into published posts. Technical depth. No salesy fluff.

Convert voice memos into polished posts instantly
Build thought leadership without sounding salesy
Share expertise in <30 min/week (not 5+ hours)
Citation-backed posts that reflect your credibility
Before Tonemark
With Tonemark
Ideas die in Apple Notes
Published insights daily
1-2 blog posts/year
6-10 LinkedIn posts/month
High effort, low output
Low friction, high impact
Hates 'marketing'
Authentic knowledge sharing

Common Use Cases

Hot takesFrameworksTechnical deep divesVoice memo → post workflowsOpen source contributions

Found yourself above?

Most professionals generate their first post in under 2 minutes.

Try it freeNo credit card required

Native content for every platform.

Same expertise. Three platforms. Each optimized for how it actually works.

Native Support

LinkedIn

Optimized for professional storytelling. We handle the hooks, line breaks, and engagement pacing.

Hook swapping
Mobile-optimized formatting
Smart hashtag generation
Native Support

Twitter / X

High-impact brevity. Turn complex ideas into viral threads without losing the nuance.

Thread auto-splitting
4 viral hook styles
Character-count perfect
Native Support

Reddit

Value-first, marketing-last. Content designed to survive the harshest subreddits.

Anti-promotional tone
5 title variants
Value-first structure

Works where you work. See what it costs or try it free.

Simple, Transparent Pricing

Start for free, upgrade when you need to scale. No credit card required.

Free

$0

Get started with authentic content. Perfect for exploring Tonemark.

Create

  • 25 AI posts/mo
  • Unlimited content personas
  • AI learns your writing style
  • AI grounded in your docs
  • Every fact cited

Share

  • Export to any platform

No credit card required

Pro

$29/month

6x more posts + scheduling. For creators who publish consistently.

Create

  • 150 AI posts/mo
  • Unlimited content personas
  • AI learns your writing style
  • AI grounded in your docs
  • Every fact cited

Share

  • Publish now or schedule
  • LinkedIn (unlimited)
  • X (60 posts/mo)

Support

  • Priority email

Frequently Asked Questions

Everything you need to know about Tonemark

Questions answered? Start with 25 free posts/month. No credit card required.

See for yourself

Still have questions? Email us

Ready to get your first draft?

Quality content from your expertise. Quick interview. Polished post.

Featured on There's an AI for That