Comparison 08 // Local Voice Harness vs. Cloud GTM Workflow Suite.
grai ($69 once Founder, $149 Agency) is a local voice harness: it extracts Voice DNA from 5 to 20 real samples, enforces the 6 syntactic rules plus a CV >= 0.32 floor in your browser, and prints an A4 Client Voice DNA Dossier with a SHA-256 hash.
| Option | Best For | Starting Price | Key Difference |
|---|---|---|---|
grai (Founder) |
Keeping one 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 harness. Voice DNA, 6-rule gate, CV >= 0.32 floor and A4 SHA-256 Dossiers. |
| Copy.ai | GTM teams that need repeatable workflows and templates across outbound, research and content. | $49/month (about $588 per year on monthly billing) | Cloud workflow platform with templates, seats and integrations; the voice layer is a preset, not a measurement. |
Copy.ai is a GTM workflow product. It gives a revenue team repeatable jobs: build a prospect list, research accounts, draft outbound sequences, generate a content brief. The output is volume and consistency of process, and the value shows up when five people need to produce the same class of asset every week.
grai does one job and measures it. It reads your real writing, extracts the quantitative profile, and refuses to let a draft drift into a flat, generic cadence. There are no workflows, no seats and no campaign templates, because the problem it solves starts after the workflow produced a draft.
The honest split: if the bottleneck is process, Copy.ai addresses it. If the bottleneck is that every output sounds like the same model, a workflow suite cannot fix it, because a preset is not a measurement.
CV >= 0.32 burstiness floor, computed in JavaScript, with flagged spans and targeted repair.| Criterion | grai (Founder $69 / Agency $149) | Copy.ai ($49 per month) |
|---|---|---|
| Pricing model | $69 once (Founder) or $149 once (Agency) | $49 per month, about $588 over 12 months and $1,176 over 24 |
| Primary job | Voice extraction and deterministic cadence verification | GTM workflow automation and templated content production |
| Voice model | Quantitative profile from 5 to 20 samples, stored in your browser | Brand voice preset configured inside the workspace |
| Cadence verification | 6 regex rules + CV >= 0.32 floor, with flagged spans |
No deterministic sentence-rhythm gate |
| Team seats | One licence per machine; 25 client profiles in Agency | Seat-based team workspace |
| What happens if you stop paying | You keep grai.html and your .grai files permanently |
Workflows and workspace access stop |
| Setup | Month 1 | 12-Month Total | 24-Month Total | What Is Included |
|---|---|---|---|---|
| Copy.ai (monthly billing) | $49 | $588 | $1,176 | Cloud workflow templates, seats and integrations |
| Copy.ai, five seats | $245 | $2,940 | $5,880 | The realistic configuration for a GTM team |
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. Copy.ai, by contrast, runs workflows and stores their assets in its cloud by design.Choose Copy.ai ($49/month) if: your team needs repeatable GTM workflows, shared seats and integrations, and the problem is process volume.
Choose grai ($69 once) if: the problem is that the copy reads like the model wrote it. One measured profile and a deterministic gate solve that; another template does not.
Use both if: the team runs the workflow in Copy.ai and the client-facing output still passes through grai before delivery. That is the Agency Edition use case.
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