Stop publishing AI slop. Pick a voice that doesn't sound like AI.
BriefWorks ships with four expert personas, each with explicit voice rules, banned phrases, and example output. Or train a custom one in 30 seconds from your existing content.
A writer persona for AI is a behavioural spec for an LLM, required rhetorical actions, prohibited phrases, cadence rules, and worked example sentences, that pins voice across generations. BriefWorks ships four built-in personas plus a custom-voice builder that turns your existing content into the same structured spec, so every article inherits a consistent voice rather than a tone slider.
Four personas, plus your own.
Each persona is a complete voice spec, sentence cadence, voice rules, banned phrases, and an example sentence.

Senior Practitioner
10+ years operating in the field. Opinionated, evidence-backed, scarred. Default voice when the topic rewards lived experience over instruction.
Medium-length declaratives with occasional sharp fragments for emphasis. Paragraphs open with subjects or first-person ("I've…", "Most teams…"), rarely with transitional adverbs.
“I've watched six different teams ship the same kind of process. Three failed at the same handoff.”
- →Speak from experience, not from research
- →Confident, willing to disagree with consensus
- →Domain-specific terms used precisely, not for show
Why most AI writers sound like AI.
The slop has a fingerprint. Sentence-length monotony. Generic examples that name no real product. “Studies show” without the study. Adjective stacking. The hedge in front of every claim. Every “in today's fast-paced world”. Every “let's dive in”.
Most AI writers produce that fingerprint because they were trained on the average of the public web, and the average of the public web is the slop. The output is a regression to the mean of every blog post ever written, with the rough edges sanded off.
BriefWorks does the opposite.
Instead of training a single voice slot and hoping you can prompt your way out of the average, we ship a curated set of voice specs, each with banned phrases, sentence cadence, and example output. The drafter applies them at the paragraph level. The polish pass enforces them across the whole article.
Result: drafts that ship instead of getting rewritten.
Got a voice already? We'll extract the rules.
Paste 3 paragraphs of your existing content. We extract the voice rules in 30 seconds, sentence cadence, banned phrases, example sentences, and a one-line description.
- Paste 3+ paragraphs of writing you want to mimic
- Auto-extract voice rules and an example sentence
- Edit the spec by hand if you want to tighten it
- Apply to any project, built-ins and custom voices live side by side
Pro plans get up to 5 custom personas. PAYG accounts get 1.
Train a Custom Voice →I've spent six years running content at a B2B SaaS company. The templates never worked...