# grai vs. AuthoredUp: Voice DNA and Cadence Gate vs. LinkedIn Text Formatter (2026) > **Last verified against public pricing and vendor documentation:** 2026-10-29 > **Canonical URL:** https://grai.page/vs/authoredup **Direct Answer:** AuthoredUp ($19.95/month, about $239 per year) is a LinkedIn formatting extension: bold and italic Unicode, fold preview, snippets and post analytics. It does not extract a quantitative Voice DNA profile and it does not compute sentence-length burstiness. `grai` ($69 once, Founder Edition) is a local voice workbench: it profiles 5 to 20 real texts, runs a 6-rule syntactic gate plus a `CV >= 0.32` floor, and prints an A4 Voice DNA Dossier with a SHA-256 hash. ### TL;DR Comparison | Option | Best For | Starting Price | Key Difference | | :--- | :--- | :--- | :--- | | **`grai`** (Founder) | Proving the text itself does not read like a flat model draft, before it is published. | **$69 once** (AI model/API usage separate if used) | Local HTML5 workbench, 622 KB. 6-rule gate + `CV >= 0.32` floor + A4 SHA-256 Dossier. No LinkedIn connection. | | **AuthoredUp** | Making a finished post look right on LinkedIn: bold, italics, fold preview, snippets. | **$19.95/month** (about $239 per year on monthly billing) | Browser extension for visual formatting and analytics. No quantitative voice profile, no cadence math. | --- ## 1. Different Layers of the Same Post AuthoredUp works on presentation. It changes how the text renders on LinkedIn: bold and italic Unicode, line breaks that survive the feed, a preview of where the fold cuts the post, reusable snippets and post analytics. `grai` works on the text before presentation. It measures how you actually write (sentence length distribution, banned constructions, structural habits) and refuses to let a flat rhythm through, because a model draft with perfect formatting is still a model draft. One does not replace the other. A post can be beautifully formatted and still read like a press release written by a machine, and a post can have a human rhythm and still look like a wall of text. --- ## 2. Where AuthoredUp Wins vs. Where grai Wins ### Where AuthoredUp Wins - **Formatting inside LinkedIn:** bold, italics and Unicode tricks applied where you write, without copy-paste gymnastics. - **Fold preview:** shows where the see-more cut lands, which is a real distribution lever on LinkedIn. - **Snippets and templates:** reusable fragments for repeated hooks or signatures. - **Post analytics:** performance data next to the editor. ### Where grai Wins - **Quantitative Voice DNA:** extracts measurable habits from 5 to 20 real texts instead of guessing at a tone. - **Deterministic gate:** 6 syntactic rules plus a burstiness floor (`CV >= 0.32`), computed in JavaScript, with flagged spans and targeted repair. - **Premise Sparring:** three galleys (THE SCALPEL, THE BROADSHEET, THE LEDGER) reshape the argument before the draft exists, which no formatter does. - **Client evidence ($149 Agency):** an A4 Client Voice DNA Dossier signed with a SHA-256 hash, for studios that must prove the deliverable is not generic. --- ## 3. The Workflow That Uses Both A practical sequence: shape the premise in `grai` (THE SCALPEL for a sharp claim, THE BROADSHEET for an essay, THE LEDGER for a list), draft, run the cadence gate until the score is clean, paste the result into LinkedIn, then use AuthoredUp for bold, italics and the fold preview. The formatter never sees a flat draft, and the gate never has to care about Unicode. --- ## 4. Side-by-Side Technical and Commercial Matrix | Criterion | grai (Founder $69 / Agency $149) | AuthoredUp ($19.95/month) | | :--- | :--- | :--- | | Pricing model | **$69 once** (Founder) or **$149 once** (Agency) | **$19.95 per month** recurring (about $239.40 over 12 months) | | Primary job | Voice extraction and deterministic cadence verification | Visual formatting and layout inside LinkedIn | | Voice DNA profile | Yes: quantitative profile from 5 to 20 samples, stored locally | No quantitative profile; formatting presets only | | Cadence verification | 6 regex rules + `CV >= 0.32` burstiness floor, with flagged spans | None. Formatting does not measure sentence rhythm | | Fold preview | No | Yes, inside the LinkedIn composer | | LinkedIn account connection | None required | Extension acts inside your logged-in LinkedIn tab | | What happens if you stop paying | You keep `grai.html` and your `.grai` files permanently | Formatting tools stop working in the composer | --- ## 5. 12-Month and 24-Month Total Cost Comparison | Setup | Month 1 | 12-Month Total | 24-Month Total | What Is Included | | :--- | :--- | :--- | :--- | :--- | | **AuthoredUp** (monthly billing) | $19.95 | $239.40 | $478.80 | Formatting, fold preview, snippets, analytics | | **`grai` Founder** (one-time) | $69 | $69 | $69 | Local Voice DNA + Cadence Gate + A4 Dossier export, forever | | **Both, used together** | $88.95 | $308.40 | $547.80 | Formatted posts that also pass the cadence gate | | **`grai` Agency Edition** (one-time, for studios) | $149 | $149 | $149 | 25 client profiles and client-ready SHA-256 Dossiers | --- ## 6. Privacy and Data Flow Boundary - **Shipped Pre-Built Kit (`grai.html`):** Ships with a Content Security Policy (`default-src 'none'; style-src 'unsafe-inline'; font-src data:; img-src data:; script-src 'unsafe-inline'; connect-src 'none'; object-src 'none'; base-uri 'none'`) that allows inline styles and inline scripts (plus `data:` fonts and images) while blocking direct API connections (`connect-src 'none'`) from the page. Out of the box, it runs in Copy-Paste mode. - **Browser Storage:** Voice profiles and writing samples (along with drafts) are stored in your browser's `localStorage` when available. If your browser settings or private-browsing mode block `localStorage` on local `file://` pages, `grai` falls back to in-memory session storage (`memStorage`), which lasts until the tab closes. Export a `.grai` backup file to save your profiles permanently to disk. - **When data leaves your machine:** (1) when you paste and submit a prompt into Claude or ChatGPT (or Gemini) in Copy-Paste mode, (2) when you run a custom source build with BYOK enabled and send a prompt to your selected API provider, or (3) when you export and share a `.grai` file or PDF Dossier yourself. A browser extension, by contrast, operates inside the page where you are already logged in, so its permissions deserve a read. --- ## 7. Verdict: Which Should You Choose? **Choose AuthoredUp ($19.95/month) if:** your posts already sound like you and the missing piece is presentation inside LinkedIn. **Choose grai ($69 once) if:** the text is the problem. Flat rhythm, generic transitions and structural cliches survive every formatter, and only a measurement gate catches them. **Choose both if:** you publish often and want the argument, the rhythm and the layout controlled at the same time. The combined first-year cost is $308.40, which is less than two years of AuthoredUp alone. --- ## Frequently Asked Questions ### Does AuthoredUp check whether a draft sounds like AI? No. AuthoredUp is a formatting and analytics extension. It does not extract a voice profile and does not compute sentence-length burstiness, so it cannot tell you that a draft has a flat rhythm. grai does that measurement with 6 syntactic rules and a CV floor of 0.32. ### Do I need both grai and AuthoredUp? Only if you want both jobs done. AuthoredUp formats a post inside LinkedIn; grai verifies that the text has a human cadence and profiles your voice. If you only need bold and italic text plus a fold preview, AuthoredUp alone is enough. ### Which one is cheaper over two years? grai Founder is $69 once. AuthoredUp at $19.95 per month costs $478.80 over 24 months. They solve different problems, so the honest answer is that the comparison only matters if you need voice verification at all. **Checkout:** [Founder Edition ($69 once)](https://payhip.com/b/5pXfN) | [Agency Edition ($149 once)](https://payhip.com/b/QVIBp)