Comparison
Spellbook vs ClientSafeAI: contract AI, and where your documents go
Is there a Spellbook alternative where the model runs on our own server?
The short answer
Spellbook drafts and reviews contracts inside Microsoft Word. It runs on AWS in Canada and the US and sends requests to OpenAI and Anthropic models under zero-data-retention agreements. ClientSafeAI doesn’t work inside Word. It answers questions about your documents with a model that runs on a server belonging to your firm alone.
- Pick Spellbook if your day is drafting and redlining contracts in Word, and you want clause libraries, playbooks and redlines under your own name.
- Pick ClientSafeAI if the requirement is that client documents never reach a third-party model provider at all, and you want one published price for the whole firm.
Side by side
| Compared on | Spellbook | ClientSafeAI |
|---|---|---|
| Where the model runs | Spellbook’s AWS cloud, with data centres in Canada and the US. Requests go to OpenAI and Anthropic models, which keep nothing under Spellbook’s zero-data-retention agreements. | On a GPU server dedicated to your firm, in the US by default or in another country as a customization. The AI model, database and files all run on that one machine. |
| Trains on your data? | Spellbook says request data isn’t persisted by OpenAI or Anthropic and exists only in memory while a request is processed. | Never, on any plan. |
| Hardware shared with other customers? | Shared cloud. Spellbook’s pages don’t describe a per-customer dedicated server. | No. One customer per server. |
| Price | Not published. Priced by the number of team members on a license, quoted through a demo. | $499/mo flat. Unlimited documents and questions, no per-seat pricing. |
| Minimum commitment | Not published. There’s a 7-day free trial. | Month to month. Cancel any time. |
| Independent audits | SOC 2 Type II. Spellbook also lists HIPAA and GDPR compliance. | No third-party audit report (SOC 2 or ISO) yet. We don’t sign HIPAA BAAs. |
When Spellbook is the better choice
- You draft and redline contracts in Microsoft Word all day and want the AI right there. We don’t have a Word add-in.
- You want a clause library and playbooks that check contracts against your firm’s standards as you draft.
- If a client questionnaire requires a SOC 2 Type II report today, Spellbook has one. We don’t yet.
What ClientSafeAI actually is
A Private AI Workspace is a GPU server ordered for one firm. Your documents, the AI model and the database all live on it, and answers cite the page they came from. Call and meeting recordings are transcribed on the same server. It costs $499 a month, flat, with no per-seat pricing. How the data is handled is set out on the security page.
Talk to us about a Workspace
Every Workspace is set up by hand on its own server, so it starts with a short call about your documents and how your firm works.
Sources
Every statement about Spellbook above comes from these pages, checked September 30, 2026:
- Spellbook — Security (AWS hosting, regions, zero data retention, certifications)
- Spellbook — Pricing (per team member, 7-day trial)
- Spellbook — Home (models used, Word add-in)
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