Somebody at your firm is already using an AI assistant. Maybe it is an associate summarizing depositions on a personal account, maybe a paralegal cleaning up intake notes. The question is no longer whether the firm will use these tools, it is whether the firm will choose one deliberately, put it on a plan with the right terms, and teach people to use it well.
Claude, made by Anthropic, is the assistant we recommend most often to law firms, and this page explains why in concrete terms: what it does, what the plans cost you in control, and what it still cannot be trusted to do alone.
In plain terms, Claude is a model you give text to (a question, a document, instructions) and that produces text back. For a law firm the useful operations are a short list: draft, summarize, compare, extract, rewrite, and answer questions about a document you have given it. It handles long documents well. What it is not is a legal research database: it does not have your jurisdiction's case law unless you give it the cases, and it will sometimes produce a plausible citation that does not exist. That limitation shapes everything else on this page.
Which plan: Free, Pro, Team, or Enterprise
Individual plans (Free and Pro) are for personal use and are not the right home for client work. The Team and Enterprise plans are built for organizations: they add centralized billing, user management, and admin controls, and Anthropic's published terms state that customer data on those plans is not used to train its models by default. Enterprise adds features such as single sign-on and audit logging that larger firms typically require.
We tell every firm the same thing: read the current commercial terms and privacy documentation yourself before you sign, and have whoever handles vendor contracts confirm the data handling matches what your engagement letters promise clients. Terms change, and the plan a colleague described last year may not be the plan you are buying today.
The confidentiality question, answered plainly
ABA Formal Opinion 512, issued in 2024, addresses generative AI directly. It ties the use of these tools to existing duties: competence (understand the tool well enough to use it responsibly), confidentiality (know where client information goes and whether the vendor may use it), supervision (lawyers remain responsible for work product from staff and tools), and fees (bill for the value of your time, not for time the tool saved). Several state bars, including Florida, California, and the District of Columbia, have issued their own guidance along similar lines.
In practice this means three things. Use an organizational plan whose terms exclude training on your data. Decide, in writing, which categories of client information may go into the tool, and get informed consent where your state's guidance calls for it. And review every output before it leaves the firm. Our page on writing an AI policy for your law firm turns those into a document your staff can follow.
Five tasks that pay off in the first month
Start with tasks where the input is your own document and the output is reviewed before use. Summarizing a deposition transcript into a timeline with page references is one. Turning intake call notes into a structured memo is another. Comparing two versions of a contract and listing the differences is a third. Drafting a first version of a routine letter from a set of facts is a fourth, and rewriting a dense client update into plain language is a fifth.
Notice what is not on the list: legal research from memory, and anything that goes to a client or a court without a person reading it. The drafting legal documents with Claude page shows how to structure the drafting tasks so that the review step is fast rather than a second full pass.
What Claude gets wrong and how you catch it
Claude can be wrong in two ways. It can misread the document it was given, especially when asked about something the document does not address, and it can produce confident statements about the law that are invented. The second is the more dangerous because the output looks like a finished brief.
The safeguards are procedural. Every citation gets checked in your research platform. Every factual assertion about a document gets traced back to a page. Every draft is treated as a first draft from a junior colleague who is fast, well read, and occasionally sure of things that are not true. Firms that build this habit early use the tool more, not less, because they trust their own process.
Rolling it out without a mess
Pick a Team plan owner, usually the firm administrator. Create Claude Projects for the three or four recurring workflows, each with instructions and reference documents, so that staff do not have to reinvent prompts. Our guide to Claude Projects for law firm knowledge management explains how to set those up. Then train people by role, with real (redacted) files, and measure adoption by the number of Projects in active use rather than the number of licenses.
Firms that want help with that sequence, from plan selection through training, can read about our Claude training for lawyers program. We wrote about where all of this is heading in our piece on the future of legal technology.
Questions we get
Is Claude better than the other assistants for legal work?
We prefer it for long-document tasks and for the way it follows detailed instructions, and the organizational plans' data terms are clear. But the honest answer is that the process around the tool matters more than the choice of tool. A firm with a good policy and good training will get more from any of them than a firm without.
Do we need to tell clients we use it?
Opinion 512 and several state opinions suggest disclosure or consent in some circumstances, particularly where client confidential information is involved or where the client has asked. Many firms add a short paragraph to the engagement letter. Confirm with your own state's guidance.
Can staff use their personal accounts in the meantime?
We advise against it. Personal plans have different terms, no admin visibility, and no way to enforce your policy. A Team plan for the handful of people who will actually use it is inexpensive relative to the risk.
If you want a second opinion on the plan, the policy, or the first three workflows to build, tell us what you are working with.