How to Use Claude AI for Legal Work: A Complete Guide for Attorneys

What Is Claude AI and Why Should Lawyers Care?

Claude is an AI assistant developed by Anthropic that has quickly become the preferred AI tool for legal professionals. Unlike general-purpose AI chatbots, Claude was designed with safety, nuance, and accuracy as core principles — qualities that align directly with the demands of legal practice.

With a 200,000-token context window, Claude can analyze entire contracts, briefs, and document sets in a single conversation. It excels at nuanced reasoning, following complex instructions, and producing structured output — exactly what attorneys need for tasks like contract review, memo drafting, and legal research.

Key Legal Use Cases for Claude

Attorneys across every practice area are using Claude to dramatically reduce time spent on routine tasks:

• Contract Review: Upload a 50-page SaaS agreement and get a structured risk assessment in minutes, not hours. See our complete walkthrough in AI Contract Review: How to Use Claude for Due Diligence.
• Legal Research: Draft research memos with relevant analysis, though always verify citations independently.
• Document Drafting: Generate first drafts of complaints, motions, demand letters, and client communications.
• Deposition Summaries: Turn 200-page deposition transcripts into organized summaries in minutes.
• Discovery Review: Analyze document productions for relevance and privilege issues.

Getting Started: The CRAFT Framework

The difference between a useless AI response and a brilliant one comes down to how you prompt. We developed the CRAFT prompting framework specifically for legal professionals:

• Context — Specify jurisdiction, practice area, and client situation
• Role — Tell Claude to act as a specific type of attorney
• Ask — State the specific deliverable you need
• Format — Define how you want the output structured
• Tone — Professional, persuasive, analytical, or plain English

Using this framework consistently will transform your AI-assisted legal work from mediocre to exceptional.

Ethics and Confidentiality

The most important question for any attorney using AI: is it ethical? The short answer is yes, when done properly. The ABA has issued guidance supporting AI use, and over 30 state bars have published ethics opinions on the topic. The key requirements are maintaining competence (understanding the tool), protecting confidentiality (using appropriate Claude plans), and supervising all output. For a deep dive into the rules, read our guide on ABA rules for AI-generated legal work in 2026.

Get the complete guide with 50+ ready-to-use prompts and a full ethics framework.