Spellbook
Spellbook, built by the Toronto company of the same name and backed by a 2025 Series B led by Khosla Ventures, is a generative AI contract assistant that runs where transactional lawyers already draft. It reviews agreements against a team's Playbooks, proposes redlines and clauses in the document, answers contract questions with citations via Ask, benchmarks terms using Compare to Market, and runs multi-document transactional work via the Spellbook Associate agent. Contract turnaround shortens and negotiation positions stay consistent across reviewers.
About the product
Spellbook is an AI contract drafting and review platform that operates as an add-in inside Microsoft Word and Google Docs, the tools transactional lawyers already use. Built by the Toronto company of the same name, it targets the review bottleneck on routine commercial agreements by putting drafting, risk review and benchmarking into the live document rather than a separate system.
Key features of Spellbook include:
- In-Document Review: Spellbook analyses an agreement in Word or Google Docs, flags risky and missing terms, explains the exposure and proposes redlines directly in the working draft.
- Negotiation Playbooks: Teams encode preferred positions, fallback language and review standards so every reviewer applies the same negotiation stance without consulting a separate policy document.
- Spellbook Associate: An AI agent handles multi-document transactional work, drafting and reviewing across related agreements, schedules and ancillary documents in a single assignment.
- Compare to Market: Benchmarking shows how a clause compares against a large corpus of similar agreements, indicating whether a counterparty position is market standard or an outlier.
- Ask and Insight: Conversational Q&A returns cited answers from a contract, while Insight stores, indexes and searches executed agreements held in iManage, SharePoint, Google Drive and Dropbox.
Best for: In-house legal teams and transactional law firm practices reviewing high volumes of NDAs, master services agreements and commercial contracts inside existing Microsoft Word workflows.
Spellbook shortens contract turnaround without forcing a new system of record on the business. Small legal teams absorb more contract volume while keeping negotiation positions consistent, explainable and traceable back to the team's own playbook.
Spellbook is an AI contract drafting and review assistant that works inside Microsoft Word and Google Docs, accelerating redlining and negotiation for in-house legal teams and law firms.

