Vern vs Spellbook
You need to get the contract agreed and get on with the work. Vern gives your business team a clear view of the terms to challenge, the wording to propose and what changed in the next draft.
Built for the people who need to get the deal done.
If operations, finance or recruitment handles your contracts, choose Vern for a review built around their decisions. Check incoming terms against your own positions, work through suggested changes in Word and keep reviewing as the negotiation moves on. You can run the process without an in-house legal department.
A UK starting point. Your commercial judgement.
Start with Vern’s UK Client Terms playbook, then make it your own. Set the terms your business wants, the concessions you can make and the issues to escalate. The Vern team at AssurePath can help you get set up if you want support.
ChatGPT · Claude · Your systems
Use Vern inside ChatGPT or Claude.
Already working in ChatGPT or Claude? Connect your Vern account and ask it to review a contract against your playbook. Get Vern’s clause findings and two scores back in the conversation, then ask about the terms that need attention.
For your own systems, Vern’s contract-review API lets you submit agreements and later rounds, retrieve the results and receive signed webhooks when a review is ready.
Your Vern account permissions and review credits still apply. API access is agreed as part of your package; contract drafting currently takes place in Word.
What you get with Vern
Your terms, your review and a record of the negotiation as it develops.
On a small screen, scroll the table sideways to compare both products.
| Consideration | Vern | Spellbook |
|---|---|---|
| ChatGPT and Claude | Connect your Vern account to run a review, read the findings and ask about your contract using your own playbook. | Its integration catalogue focuses on bringing documents and legal sources into Spellbook. No official ChatGPT or Claude connector was verified. [6] |
| Review API and automation | Submit reviews and later rounds, retrieve clause findings and both scores, and receive signed webhooks. API access is agreed in your package. | No public customer developer API documentation was verified. Private or partner access may differ. [6] |
| UK business focus | A UK Client Terms starting playbook, editable positions and fallbacks, and optional support from the Vern team at AssurePath. | Spellbook is headquartered in Canada and serves an international customer base. [7] |
| Who runs the review? | Business teams handling commercial agreements, including those without in-house lawyers. | Law firms and in-house legal teams reviewing, drafting and working across legal documents. [1] |
| Your playbook | Build and manage your own positions. The Vern team can help with setup whenever you need it. | Create playbooks from documents or instructions. A build service is also listed for in-house teams. [1][2] |
| What needs attention? | See position fit and an assessment of enforceability as two separate clause scores, with findings explaining the concerns. | Playbook rules support preferred wording, fallbacks and risk levels. [4] |
| When the next draft arrives | Compare clauses across negotiation rounds, re-score revised terms and keep earlier reviews with the same negotiation. | Compare documents, including untracked changes. Run playbook review on redlines to accept, reject or revise them. [3][5] |
| Getting the contract in | Upload in the web app, use Word or forward it from an approved email address. Approved email senders do not need a seat. | Review and draft through its Word add-in, with broader document work available through Associate. [1] |
| How reviews are priced | A tailored package using review credits. A follow-up round uses half the credit of a new review. | Custom pricing based on the number of team members on the licence. [1] |
Expert review inside Vern is coming soon.
Through every round
The second draft deserves a proper review too.
A customer sends back your MSA. They have agreed the payment terms, rewritten the liability clause and changed the IP wording elsewhere. Vern keeps that draft in the same negotiation, shows the clause changes and re-scores the revised terms against your positions.
That gives the person handling the deal something practical to work with: what moved towards your terms, what still falls outside them and which revised clauses raise drafting concerns. You can compare earlier rounds as well as the latest two.
See how Vern compares negotiation rounds →
Spellbook also compares document versions, including edits made without tracked changes, and reviews redlines against a playbook. Its Word comparison uses the open document and one reference document; Associate supports multi-document comparison. [3][5]
Questions before you choose
Can we use Vern without an in-house legal team?
Yes. Vern is built to give business teams a consistent review against their agreed positions. You stay in control of what to accept and when to bring in a solicitor. Vern provides legal information, not legal advice.
Can we set up our own playbook?
Yes. Build your preferred terms and fallbacks in Vern and maintain them as your business changes. If you want help getting started, the Vern team at AssurePath can support you. You do not have to commission a playbook build.
Sources and further reading
Published by AssurePath, the maker of Vern. Competitor details checked against the pages below on ; this is not a hands-on benchmark. Features and plans can change.
- Spellbook: product scope and pricing
- Spellbook Help: create playbooks
- Spellbook Help: playbook review of redlines
- Spellbook Help: fallback positions and risk levels
- Spellbook Help: compare documents
- Spellbook: official integration catalogue
- Spellbook: company location and international processing
Vern details: playbook setup, the two scores, Word add-in, email intake, ChatGPT and Claude, review API, pricing and data and security.
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See what needs your attention.
Bring an agreement to a Vern demo. We will show you how the findings, suggested wording and negotiation rounds help your team work through it.