Comparison 06 // Local Voice Harness vs. Enterprise Cloud Suite.
grai ($69 once Founder, $149 Agency) is a 622 KB local HTML5 workbench built on the Harness2 architecture: the model stays frozen, Voice DNA is extracted from 5 to 20 real samples, and the 6-rule gate plus the CV >= 0.32 floor run in your browser before anything leaves your machine.
| Option | Best For | Starting Price | Key Difference |
|---|---|---|---|
grai (Founder) |
Keeping a specific human voice intact across drafts, with a mathematical gate before publishing. | $69 once (AI model/API usage separate if used) | 622 KB local HTML5, Harness2 architecture. 6-rule gate + CV >= 0.32 floor + A4 SHA-256 Dossier. |
| Jasper AI | Marketing teams that need many campaign assets from templates, with shared brand presets. | $49 to $69 per seat per month ($588 to $828 per year) | Cloud suite: templates, campaigns, brand voice presets and team workflows on Jasper's infrastructure. |
Jasper is a production suite. It gives a marketing team templates for ads, emails, landing pages and social posts, shared brand voice settings, campaign workflows and collaboration. The value is breadth and the fact that a team can operate it without writing prompts from scratch.
grai is an instrument. It does one measurement well: how a specific person writes, expressed as numbers, and whether a new draft still matches those numbers. The model is not replaced; it stays whatever you already pay for, and grai governs the output.
The Harness2 architecture in grai is deliberate: the language model is frozen, the voice profile is extracted from real samples, and the enforcement layer is deterministic code in the browser, not another model asked to be careful.
connect-src 'none' in the shipped kit, so the default mode makes no network calls from the page.CV >= 0.32 floor are code, not a prompt, so the result is the same every run.Here is why openers and Not X, but Y constructions.| Criterion | grai (Founder $69 / Agency $149) | Jasper AI ($49 to $69 per seat per month) |
|---|---|---|
| Pricing model | $69 once (Founder) or $149 once (Agency), no renewal | $49 to $69 per seat per month, billed annually or monthly, renewed every year |
| Where generation runs | Your existing model: Copy-Paste mode in the shipped kit, or BYOK / local Ollama in a custom source build | Jasper's cloud, with the suite's own models and credits |
| Voice model | Quantitative Voice DNA from 5 to 20 real samples, stored locally | Brand voice presets configured inside the Jasper workspace |
| Cadence verification | 6 regex rules + CV >= 0.32 floor, deterministic, in the browser |
No deterministic sentence-rhythm gate |
| Team seats | One license per machine; 25 client profiles in Agency | Per-seat pricing, built for teams |
| What happens if you stop paying | You keep grai.html and your .grai files permanently |
Workspace access and brand presets stop |
| Setup | Month 1 | 12-Month Total | 24-Month Total | What Is Included |
|---|---|---|---|---|
| Jasper Creator (one seat, monthly billing) | $49 | $588 | $1,176 | Cloud templates and campaign workflows for one writer |
| Jasper Pro (one seat, monthly billing) | $69 | $828 | $1,656 | Higher limits and team features for one seat |
| Jasper Creator, three seats | $147 | $1,764 | $3,528 | The realistic small-team configuration |
grai Founder + existing AI subscription |
$89 ($69 + $20) | $309 ($69 + $240) | $549 ($69 + $480) | Local Voice DNA + Cadence Gate + the model you already use |
grai Agency Edition (one-time) |
$149 | $149 | $149 | 25 client profiles + A4 SHA-256 Dossiers, forever |
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.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..grai file or PDF Dossier yourself. Jasper, by contrast, generates and stores campaign content inside its cloud workspace by design.Choose Jasper ($49 to $69 per seat per month) if: you run a marketing team that needs volume across many formats, shared brand presets and campaign workflows, and per-seat pricing matches how you work.
Choose grai ($69 once) if: you are one writer, or a small studio, whose problem is that drafts drift into a generic cadence. You already have a model you like; you need a measurement gate and a profile you own.
Use both if: the team generates campaigns in Jasper and the final client-facing copy still passes through a deterministic gate before delivery. That is the Agency Edition use case.
One-time payment. 30-Day Distinction Guarantee via [email protected].