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What is Spellbook?

Spellbook is an artificial intelligence platform designed to automate and assist with contract drafting, legal document review, negotiation, and agreement management. The software provides AI-powered tools for law firms, in-house legal departments, and commercial legal professionals working with contracts and transactional documents. Its Microsoft Word integration enables attorneys to review agreements, generate suggested changes, and apply redlines without leaving their existing document editing environment. The contract review engine analyzes legal language to identify potential risks, missing provisions, drafting mistakes, and unfavorable terms. Users can generate comments and proposed revisions while maintaining control over which recommendations are incorporated into the final agreement. Spellbook's drafting tools support the creation of individual clauses, complete contracts, and revised provisions based on user instructions, legal context, and existing precedents. Custom legal playbooks allow organizations to save preferred contract language, negotiation positions, and review criteria for consistent application across different agreements. Its Market feature compares contractual provisions against thousands of similar agreements, with filtering based on jurisdiction, industry, and transaction characteristics. Automated contract intake capabilities can retrieve agreements from email and Slack and initiate first-pass reviews using established organizational standards. The platform also provides a searchable contract repository for storing executed agreements, tracking renewals, and monitoring contractual risks after signature. Spellbook integrates with Microsoft Word, Google Docs, Slack, Google Drive, and Microsoft OneDrive while providing enterprise security measures such as single sign-on, multifactor authentication, encryption, and audit controls.

What is GLM-Legal?

GLM-Legal is a domain-specialized artificial intelligence model developed by Z.ai for legal reasoning, document analysis, professional legal research, and agentic workflow execution. Introduced in October 2026, the model is based on the GLM-5.3-Flash architecture and incorporates additional training focused on legal knowledge and practical legal assignments. Its training process combines specialized legal corpora, domain-focused mid-training, and reinforcement learning across simulated legal work environments. GLM-Legal is designed to analyze source documents, identify material facts, interpret applicable legal principles, and develop structured arguments supported by relevant evidence. Contract review capabilities enable the model to evaluate agreement provisions, identify legal and commercial risks, and recommend specific changes to contractual language. Its evidence analysis functionality supports the examination of multiple documents, identification of inconsistent statements, and development of arguments based on referenced source materials. The model can also conduct compliance research involving privacy regulations, cross-border data transfers, marketing requirements, and other jurisdiction-specific legal obligations. GLM-Legal supports multistep agent workflows that combine contextual information retrieval, document analysis, legal reasoning, and generation of formatted work products. Planned integration with AutoClaw enables legal professionals to use these capabilities in document editing workflows, including Microsoft Word files with tracked changes and comments. Z.ai reports a 19.2% all-pass rate on Harvey's Legal Agent Benchmark, representing a 12.5-percentage-point improvement over the underlying base model, alongside competitive results on LegalBench and PLawBench. GLM-Legal is available for beta applications, with Z.ai offering prospective users an opportunity to request API access and explore integration into legal technology.

Media

Media

Integrations Supported

Microsoft Word

Integrations Supported

AutoClaw
Z.ai

API Availability

API Availability

Has API

Pricing Information

Pricing not provided

Pricing Information

Pricing not provided

Supported Platforms

SaaS
Windows
Mac

Supported Platforms

SaaS

Customer Service / Support

Web-Based Support

Customer Service / Support

Not specified

Training Options

Documentation Hub

Training Options

Documentation Hub

Company Facts

Organization Name

Spellbook

Date Founded

2018

Company Location

Canada

Company Website

spellbook.com

Company Facts

Organization Name

Z.ai

Date Founded

2019

Company Location

China

Company Website

z.ai/blog/glm-legal

Categories and Features

AI Contract Review

Not specified

AI Legal

Not specified

Contract Analysis

Not specified

Categories and Features

AI Contract Review

Not specified

AI Legal

Not specified

AI Models

Not specified

Large Language Models

Not specified

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