Give your AI a legal research engine.
Descrybe Legal Engine brings structured U.S. primary law and focused legal research tools into ChatGPT, Claude, Microsoft 365 Copilot, Perplexity, and custom workflows. For guided research, brief review, saved work, and exports, use the full Descrybe Platform.
Legal Engine $25/month. Descrybe Platform $50/month with Legal Engine included.Half off your first month. Cancel anytime.
One legal intelligence foundation. More ways to work.
Use Descrybe Legal Engine in a supported AI assistant or authenticated internal workflow, or work in the full Descrybe Platform.
Descrybe Legal Engine brings Descrybe’s legal research tools into supported AI assistants and authenticated internal tools built with the Open Connector, enabling them to research primary law, resolve citations, verify quotations, check subsequent treatment, and retrieve source text. The Descrybe Platform provides the full workspace for guided research, brief review, citation checking, saved sessions, and exports, with Legal Engine access included.
Descrybe Legal Engine
Add source-grounded legal research to the AI assistant you already use. Descrybe finds and checks U.S. primary law, resolves citations, verifies quoted language, reviews treatment, and returns source material for you to inspect. One Legal Engine subscription works across supported assistants.
Descrybe Platform
Research complex questions, review briefs, search primary law, save sessions, and export work product to Word in one purpose-built workspace. Every workflow keeps the supporting authority available for review. Descrybe Legal Engine access is included.
Legal intelligence starts with structure.
Access to primary law is only the beginning. Descrybe structures cases, citations, courts, treatment signals, legal issues, and source passages so assistants and agents can retrieve relevant authority, inspect later treatment, verify quotations, and return to the underlying sources.
Structured authority
Case identity, court, date, citations, separate opinions, treatment, and source links remain distinct.
Focused source passages
Assistants can retrieve a small, ranked set of passages for the issue, rule, quotation, or fact pattern.
Tools for legal verification
Citation resolution, citing-case research, treatment checks, and quote verification support the work at the right point.
Use the same Legal Engine wherever the task belongs.
One Legal Engine subscription works across supported assistants and apps. Third-party access may require a separate subscription or organization approval. The Open Connector brings Legal Engine to authenticated internal tools and workflows.
Trusted by thousands of paying subscribers and institutionally licensed users.
Lawyers, legal professionals, researchers, educators, and students use Descrybe through paid subscriptions and organization-sponsored access.
Beyond Confidently Wrong: How Purpose-Built AI Mitigates Legal Reasoning's Hidden Risk
Our published benchmark across 200 Multistate Bar Exam questions found that DescrybeLM, grounded in verified primary law, scored 99.7% on reasoning quality and answered every question correctly, outperforming the foundation models tested. The study showed why grounding matters: legal AI answers are more reliable when reasoning is tied to verified primary law, rather than model confidence alone. Now ChatGPT, Claude, Microsoft 365 Copilot, and Perplexity users have that foundation through Descrybe Legal Engine.
What people are saying
From legal professionals, researchers, and practitioners.
In the news
Coverage and announcements.
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Descrybe Brings Legal Intelligence Plugin to ChatGPT Enterprise
Descrybe announced that the Descrybe Legal Engine plugin is coming to ChatGPT Enterprise, bringing specialized legal research directly into ChatGPT. The plugin helps users identify relevant authority, understand how cases and laws relate, and work from verifiable primary sources, with focused legal information structured specifically for AI assistants to use efficiently. The launch is especially meaningful because Descrybe itself was built from the beginning using OpenAI technology.
September 17, 2026
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Descrybe Update
Susan E. Guthrie Joins Descrybe as Strategic Advisor
Descrybe has named Susan E. Guthrie as a strategic advisor. A leading attorney, mediator, educator, author, and legal innovation thought leader, Guthrie brings more than 35 years of experience helping legal professionals navigate change. She joins Descrybe as generative AI moves deeper into everyday legal workflows, advising the company as it expands access to reliable legal research and intelligence across its platform, leading AI assistants, and custom AI tools and workflows.
September 15, 2026
Press Release
Descrybe Update
Descrybe Brings Legal Research and Intelligence to Microsoft 365 Copilot
Descrybe Legal Engine is now available in Microsoft 365 Copilot, where Microsoft highlighted Descrybe as one of six new Legal Services offerings. The integration brings Descrybe’s legal research and intelligence directly into Copilot, including Cowork, where users can move from legal research to Microsoft Word work product within a single workflow.
September 02, 2026
Press Release
Descrybe Update
Introducing the Descrybe Open Connector
Descrybe Open Connector gives law firms and legal organizations a new way to build, customize, and control AI-powered legal research tools and workflows on top of the Descrybe Legal Engine. Through an open-source Python SDK and reusable legal research workflows, organizations can combine their own expertise and processes with Descrybe’s structured primary law, citation intelligence, treatment analysis, and verification capabilities—making it easier to create sophisticated legal tools without rebuilding the underlying research infrastructure.
July 24, 2026
Press Release
New to AI legal research? Start here.
Descrybe helps legal professionals use AI with the law still in view: citations, quotes, treatment, and source documents remain visible and verifiable.