Half the internet now writes in the same AI voice.
Research finds AI-written text measurably converging: same phrases, same rhythm, same tone. My Writing Twin is the opposite. It learns how you actually write and makes any AI produce your emails, reports, and Slack messages in your voice.
Based on research on AI writing convergence
Fixing robotic phrasing is the easy part. My Writing Twin goes further: it learns your thought patterns, your text structure, and the words you actually use, then applies them everywhere you write.
Send-ready output. AI drafts what you need to send: no rewrites, no mistakes, no cleanup pass.
Your style, adapted. The same you, tuned to the audience, the language, and the medium. A customer email does not sound like a Slack message, and neither sounds like anyone else.
One profile. Every AI tool. No monthly fee.
A note from the founder, an enterprise sales RVP in Tokyo.
“I sell enterprise software for a living. My work happens in three languages. Since I started using My Writing Twin, colleagues praise my Slack messages. The AI improves my drafts. The tone stays mine, in every language, for every audience. It saves me every day.”
The Problem with AI Writing
You've tried using ChatGPT for emails. Claude for documents. Gemini for drafts.
They all have the same problem: they don't sound like you.
Every output needs heavy editing. The tone is off. The transitions are wrong. It uses words you'd never use. And it adds em-dashes everywhere.
You end up spending almost as much time fixing AI drafts as you would writing from scratch.
Worse if you're multilingual:
- 01Your English is direct and confident
- 02Your Japanese needs the right level of keigo
- 03Your French has a different rhythm entirely
No AI tool handles this. Your twin auto-detects context and adapts: email vs Slack, internal vs customer, English vs Japanese. And those are examples, not the limit.
The Hidden Cost of Generic AI
Every email you rewrite is time you'll never get back.
20 emails per day x 5 minutes of editing = 100 minutes lost daily
That's 8+ hours per week fixing AI output
Over a year: 400+ hours — ten full work weeks
And that's just email. Add Slack, documents, presentations...
The real cost isn't just time. It's cognitive load.
Constantly switching between "what AI wrote" and "what I would actually say" is exhausting. It fragments your focus. It slows you down.
You didn't adopt AI to work harder.
See How It Works
45 seconds to understand how My Writing Twin captures your unique writing style
Introducing MyWritingTwin: Your AI Writing Twin System
MyWritingTwin is a complete methodology for capturing your authentic writing style. Built on computational stylometry, the same science used in forensic linguistics to identify anonymous authors. Our 7-dimension analysis framework extracts 50+ style markers that make your writing uniquely yours.
Read the research whitepaper: 50+ academic citations from peer-reviewed sources.
Collect Your Writing DNA
- Three quick picks define your first context: language, medium, audience
- AI-assisted collection pulls your real writing, or paste and upload it yourself
- Works for any language, any context
Extract Your Unique Patterns
- 7-dimension analysis: tone, rhythm, vocabulary, sentence construction, cultural markers, language-specific patterns, signature elements
- Quantitative metrics: sentence length stats, vocabulary diversity (TTR), function word frequencies
- Culture-specific patterns (Japanese keigo, French tu/vous, formality levels)
Generate Your Writing Twin
- Dual-output system: comprehensive guide + optimized runtime block
- Writing Style Profile: 6-8K tokens of personalized writing analysis (learn from this)
- Runtime Block: 3-4K tokens optimized for deployment (deploy with this)
Deploy Anywhere
- Works with ChatGPT, Claude, Gemini, or any LLM
- Auto-detects context: email vs Slack, internal vs customer, English vs Japanese
- Your style, every time
Before vs After
| Before My Writing Twin | After My Writing Twin |
|---|---|
| AI output feels robotic | Output reads authentically like you |
| 10+ minutes editing each email | Quick review, minimal edits |
| Different style across platforms | Consistent style everywhere |
| Language switching is jarring | Seamless multilingual output |
| Context blindness (same tone for CEO and team) | Auto-detects audience and adapts |
| Wasted AI subscription | AI that actually saves time |
It Learns How You Think, Not Only How You Write
Your writing samples show how you write. Your AI chat history shows how you think. The cognitive layer reads your ChatGPT, Claude, or Gemini history for the reasoning patterns underneath your style.
Style Layer
Vocabulary, sentence rhythm, formality, and punctuation. The surface of how you sound.
Cognitive Layer
The reasoning underneath the words. How you build an argument, and how much you commit to it.
Argument Direction
Evidence first, or conclusion first
Certainty
Whether you hedge or commit
Causal Reasoning
Whether you explain the why
Analogy Domains
Which worlds your metaphors come from
Analytical or Intuitive
Take a problem apart, or explore it whole
Live today: the full supervised import for ChatGPT, Claude, and Gemini. You consent first, we extract the patterns and delete the raw file, and nothing merges until you approve a preview.
Try Your Free Writing DNA Snapshot
See a preview of your unique writing style profile — completely free. Our Writing DNA Snapshot analyzes your writing patterns, tone, and personality markers in seconds.
- Instant writing style analysis
- Personality & tone indicators
- AI readiness score
- Shareable snapshot card
No account required — just paste your writing
Every Writer Has a Unique Fingerprint
See how literary legends score across six dimensions of writing style. Discover which famous author writes most like you.
Ernest Hemingway
The Efficient Communicator
Hemingway wrote standing up and aimed to write 500 words per day.
Choose Your Path
Build your Style Profile first, pay when you're ready
Free: your first use case
Build your Writing Twin for one use case, completely free.
Best for: Anyone who wants proof before paying
- Included:1 use case: one language, medium, audience
- Included:2,000 words from your samples
- Included:Use it in any AI
- Included:No card required
Starter
Get started with the essentials
Best for: Single-language users getting started
- Included:1 language
- Included:3 style matrix sections
- Included:1 generation total
- Included:All deployment guides
- Included:Basic documentation
Pro
Best Value - Full Power
Best for: Multilingual professionals
- Included:Unlimited languages
- Included:Unlimited style matrix sections
- Included:1 regeneration included
- Included:All deployment guides
- Included:Example corpus + sample outputs
- Included:Optional Edit add-on: $10 first year (then $29/yr)
Executive
Premium experience with extras
Best for: Leaders who want the complete package
- Included:Everything in Pro
- Included:1 year of the optional Edit add-on included
- Included:Unlimited audio transcription credits
- Included:Priority email support
- Included:Deep Voice Analysis powered by our most advanced AI
Enterprise
Multi-user & agency solutions
- Everything in Executive
- Multi-tenant voice profile management
- Dedicated API rate limits
- Custom onboarding & integration support
- SLA & priority support
Agencies & teams managing multiple voice profiles
Contact UsBonuses Included (All Paid Tiers)
- +Real anonymized example corpus
- +Sample Writing DNA output for reference
- +Iteration workflow guide
Frequently Asked Questions
Can't I just tell ChatGPT to "write in my style"?
You can, and it will guess. Generic AI has never measured your writing, so it produces its house style with light seasoning.
My Writing Twin builds a Style Profile from your actual writing samples: measured, not guessed. That difference is visible the first time you compare the two side by side.
Do I need technical skills?
Not at all. If you can copy-paste and follow step-by-step instructions, you can build your Writing Twin. We provide detailed guides for every step of the process.
Which AI platforms does this work with?
All of them. We include specific guides for ChatGPT (Custom GPTs), Claude (Projects), and Gemini (Gems). The Runtime Block works with any LLM, including API usage.
How long does setup take?
Here's the breakdown:
- • Collecting samples: 15-60 minutes (depending on how organized your writing is)
- • Questionnaire + setup: 10-15 minutes
- • Deploying: 10-15 minutes per platform
Total: Under 2 hours for a system you'll use daily.
What if I only speak one language?
MyWritingTwin works great for single-language users. You'll get style consistency across different contexts (email vs Slack vs documents) even in one language. Your first use case is free, no card required, and the Starter plan ($49) is designed exactly for this if you need more: one language, up to 3 style contexts, everything you need to get AI writing like you.
What if it doesn't work for me?
Your first use case is completely free, no card required, build a real Style Profile from your own samples and see the actual output before paying anything. There's also a free Writing DNA Snapshot quiz if you just want a quick preview first.
How do I actually use my Writing Twin in my AI tools?
You get two artifacts. Your Style Profile is the full, readable analysis of how you write. Your Runtime Block is the compact version built for deployment: paste it into ChatGPT, Claude, or Gemini and every draft starts in your voice. Prefer it wired in directly? My Writing Twin also runs as a live MCP connector for AI agents and assistants, with a Chrome extension for writing anywhere in the browser.
Do I need to re-run this every time?
No, your Style Profile works indefinitely. Once generated, you can use it for months or years. Pro tier includes 1 free regeneration if you want to refine your profile after initial testing (Starter is a single generation). For ongoing updates, the optional Edit add-on ($29/year, cancel anytime) provides unlimited regenerations — your core purchase stays one-time.
What if my writing style evolves or I want to add new languages, formats, or targets?
Subscribe to the Edit plan ($29/year, or $10 first year for Pro users) to update your profile anytime. Add new writing samples, expand to new languages, add new communication contexts, and regenerate as often as you need. Your Style Profile grows with you.
Can I use this with multiple AI tools?
Yes! The output works with ChatGPT, Claude, Gemini, and any other LLM. You can deploy your Style Profile across all your AI tools simultaneously. Same authentic style everywhere.
What exactly do I receive when I purchase?
You get two optimized outputs designed to work together:
Writing Style Profile (~6-8K tokens): The Writing Style Profile (~6-8K tokens) is your personalized writing analysis. It reveals your distinctive patterns, voice characteristics, and context-specific behaviors with real examples from your writing. Read it to understand what makes your communication style unique.
Runtime Block (~3-4K tokens): The Runtime Block (~3-4K tokens) is optimized for deployment. It's the efficient system prompt you paste into ChatGPT, Claude, or any AI platform. Compact enough to avoid token waste, detailed enough to capture your authentic voice.
Why two outputs? Why two outputs? The Profile is written for you to read and learn from — too rich for direct AI use. The Block is compressed for AI execution but too dense for human reading. Together, they give you both understanding and performance.
Ready to Capture Your Writing Style?
Stop wasting time rewriting AI drafts. Create an AI Writing Twin that actually writes like you.
Pro Package — $99
- +Unlimited languages and sections
- +1 regeneration included
- +All deployment guides
- +Example corpus + sample outputs
- +Optional Edit add-on: $10 first year (then $29/yr)
No credit card required. Pay when you're ready.