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Ghost Writer

AI Content Engine That Passes Every Detector

Write anything. Pass everything. Sound like you.

Start Writing — Free
18Platforms
40-PointQA
3Detectors
GPT-5.4Powered

Built for undetectable content

Every feature designed to help you write content that passes AI detection while sounding authentically human.

📋

18 Platform Formats

LinkedIn, X, Reddit, Instagram, Facebook, Substack, TikTok, YouTube, and more. Each platform gets copy optimized for its character limits, tone, and audience expectations.

40-Point QA Engine

Every piece checked against 40 detection vectors across 10 blocks. Grammar, readability, tone consistency, AI markers, and humanization signals — all before you hit publish.

🔍

Triple Detector Pipeline

GPTZero + Pangram + Originality.ai validation. Your content is tested against the three most widely used detectors before delivery.

👤

Voice Fingerprinting

Import your writing samples and write in YOUR voice. The engine learns your style, vocabulary, and rhythm so output sounds like you — not a generic AI.

📖

Grammar & Readability

Flesch-Kincaid, Gunning Fog, SMOG scoring with inline fixes. Keep your content accessible and polished without sounding robotic.

📈

A/B Variants

Generate 2–3 versions with different hooks to test. Same message, multiple angles — pick the one that performs.

How it works

Five-stage pipeline from profile to polished output.

Stage 1Profile
Stage 2Writer (GPT-5.4)
Stage 3QA (40 checks)
Stage 4Adapter (18 platforms)
Stage 5Polish

Every platform

Character limits, formatting rules, and tone — all built in. One draft, 18 formats.

💼

LinkedIn

3,000 chars

𝕂

X / Twitter

280–25K

📢

Reddit

40K

📷

Instagram

2,200

💬

Facebook

63K

🎵

TikTok

4K

YouTube

5K

📦

Substack

Unlimited

Email

📝

Blog

📄

White Paper

💬

Threads

500

📰

Medium

📹

Pinterest

500

🔍

Google Business

1,500

🌐

Website

💬

Reply

🗨

Reddit Comment

Ghost Writer vs Grammarly

Why Ghost Writer when Grammarly exists? Because AI detection is the new grammar.

FeatureGrammarlyGhost Writer
Grammar & spelling
Readability scoring
Tone detection
AI detectionBasic ✓Triple-detector pipeline ✓✓
Platform formatting18 platforms ✓
Voice fingerprintingEnterprise only $Free ✓
Per-sentence AI highlighting
A/B variant generation
Phrase blacklist (120+)
Price$30/moFree

Start writing

No sign-up. No credit card. Bring your API key and start creating content that passes every detector.

Start Writing — Free