An AI that writes in your voice — and actually knows what you’ve written.
Anyone can prompt ChatGPT into a passable imitation. It can’t quote your March essay, catch the draft that contradicts it, or keep your unpublished writing off Big AI’s servers. A private model trained on your archive does all three.
The heart of it, in under three minutes — the founder, live on the real product. Prefer a list? →
Every tool, shown live on the real product — nine minutes, no cuts around the rough edges.
They are magnificent generalists. This is a specialist.
Different tools for different jobs. They know everything — this knows you.
Paste your writing and get a measured report of what makes it distinctively yours — sentence rhythm, punctuation, signature vocabulary, where your voice breaks — plus a copy-paste prompt that makes ChatGPT or Claude write like you. See a sample ↓
Once a model has learned how you write, something strange becomes possible: a conversation with yourself. It answers in your cadence, grounded in what you’ve written and what it knows about you. Ask it what you think. Argue with it.
A trained voice isn’t static. Everything you do here feeds it — five ways in, one voice out.
This is an example, not your report — yours is built from your own writing. It shows what the free Check-up delivers: the stylometry that fingerprints a voice — sentence rhythm, rare-word rate, punctuation signature, and the words you reach for.
Three things a shared frontier model can’t give you — and the whole reason we built our own.
A generic model rephrases your words. A model trained on your writing rewrites them the way you would — your rhythm, your habits, your turns of phrase. All on our own fine-tuned 7B, on our GPU. No ChatGPT, no Claude, nothing sent to a third party.
The free prompt is a great start — but it only describes your voice to someone else’s AI. A model trained on your writing becomes it. That last mile is the whole point — and the reason to own a model, not just a prompt.
That demo you just tried? That’s a model wearing a voice, not a prompt describing one. Frontier models work from a description of your voice — your private model works from having absorbed it.
Because for this one job — sounding like you — a small model you own beats a giant model everyone shares. Frontier models are more capable in general; they’re the wrong tool here, not the weaker one.
A trained voice isn’t just for rewriting. It becomes a measuring stick — and a compass. Every tool below is private, running on our own models.
Paste a draft and a private 14B model works out who’d most want to read it — the ideal reader, standard marketing segments (Soccer mom, Urban DINK…), the exact communities to reach, and a pitch-ready hook for each. Alongside it, three engine gauges score the piece against your own voice — content, style, and distinctiveness.
Try it →Same page, one step further: name an audience to appeal more to — or less to — and it rewrites the draft to shift its reach, then re-writes the result in your own trained voice. Not the generic AI register: your rhythm, your habits. Changes from your original come back highlighted, so you see exactly what moved.
Try it →We search the public web on your topics, read each result, and keep only the pages that match both your subject matter and your voice — articles that sound like you, not SEO sludge. Only topic keywords ever leave the building; the matching runs against your own corpus, on our models.
Try it →Paste a draft and see inside it: every paragraph scored against your voice, color-coded — catch the tired stretch, the pasted-in AI passage, the editor’s flattening. One click re-writes a drifting paragraph the way you’d say it, and re-scores it to prove it.
Try it →Your model starts from your writing samples — then keeps getting truer as you use it. It learns not just from your samples but from your prompts and chats: what you ask it to write, the facts you feed it, the project you’re in. Mention cocker spaniels today, and next week “my favorite breed” already knows. Private to your voice — never pooled with anyone else’s.
See it →We read your entire body of work, map your topics, and compare your beat against similar writers across the web. What do they cover that you never have? Who do they cite that you never mention? Every gap comes with a concrete piece to write — and one click hands it to your voice model to draft.
Try it →I study how language models represent writing — and I got tired of watching them flatten every voice into the same smooth, agreeable register.
Prompts can describe your style, but they don’t change what the model is. So we did the harder thing: train a small model on your actual writing, on hardware we control, until your rhythm and habits are part of how it writes — no frontier API, no sending your words to anyone. The science of your voice, put to work for you.
Every plan runs private on our own hardware — your documents never leave our servers. Use it as much as you like; a generous fair-use policy keeps it that way.
Pick a plan to create your account below — redeem a beta coupon for free, or add your card. No coupon yet? Leave your email and we’ll send one.
Pick your tier, then start free with a beta coupon or add your card — a private model trained on your writing: yours, on our hardware, never a frontier API.
Analyzing your voice…