AI Tools for Lawyers That Work Right in Your Browser

Which AI tools should lawyers use in the browser?

Use three layers: a legal research platform for anything you might cite, a business-grade general assistant for drafting and summarising, and a small set of extensions that handle the documents and hours around that work. Each layer has a different job and a different risk.

• Legal research AI: Lexis+ AI from LexisNexis and CoCounsel Legal from Thomson Reuters answer questions from their own legal content, which Thomson Reuters ties to Westlaw and Practical Law. Both are vendor-sold web products; pricing comes from the vendor.
• General assistants: ChatGPT, Claude, Gemini and Microsoft Copilot are strong at outlining, rewriting and summarising. Use the business or enterprise tier your firm has vetted, where the vendor states your inputs are not used for training.
• Supporting extensions: AI sidebars and writing assistants such as ChatGPT, Perplexity and Grammarly, covered in the picks section below.

Notice that the AI doing the legal reasoning mostly lives in web apps, not extensions. That is deliberate. An extension that bolts a chatbot onto every page usually needs permission to read every page, including your client portal, webmail and document management system.

For the wider set of research helpers, see our research extensions category. Academics face overlapping problems, and our guide to AI tools for researchers covers source-checking habits that transfer well to legal work.

Can AI tools do legal research you can cite?

Only a tool grounded in a real legal database gives you a starting point worth citing, and even then you must read every authority yourself. General chatbots can invent cases that look entirely plausible.

The warning case is well known. In Mata v. Avianca (S.D.N.Y. 2023), lawyers filed a brief containing cases ChatGPT had fabricated and were sanctioned. Since then, courts in several jurisdictions have added standing orders about generative AI in filings, so check your local rules before you file anything drafted with help.

Jurisdiction is where general tools slip most. Ask a chatbot about a limitation period and it may blend rules from several states or countries without saying so. Treat any answer without a pinpoint citation as a hypothesis to test.

Which AI tools help lawyers draft and review documents?

General assistants handle first drafts of routine letters, clause alternatives and plain-English client summaries well; PDF-based AI is better for questions about a specific agreement or transcript. Neither replaces your own read of the final text.

The Adobe Acrobat extension opens PDFs in Chrome with Adobe's own viewer, fill and sign tools. Adobe sells an AI Assistant for Acrobat that summarises documents and answers questions with links back to the source passage; it is an add-on, and its availability and price are set by Adobe and may change.

• Good fits: engagement letter first drafts, summarising a long deposition before a detailed read, listing defined terms in a contract, turning your notes into a client update.
• Poor fits: final contract language, anything filed with a court without line-by-line review, advice on unsettled law.
• Useful prompt habit: ask the tool to quote the exact clause or page it relied on, so checking is fast.

Where drafting AI goes wrong

Watch for confident clauses that quietly change risk allocation, such as a limitation of liability that drops a carve-out. AI also mirrors whatever template it has seen most, which may suit a different governing law. Run a redline against your firm precedent rather than reading the AI draft in isolation.

Is it ethical for lawyers to put client information into AI tools?

It can be, but only after you understand how the tool stores and uses what you type. In the US, ABA Formal Opinion 512 (July 2024) applies the existing duties of competence, confidentiality, client communication, supervision and reasonable fees to generative AI.

The confidentiality point is the one that changes daily habits. Under Model Rule 1.6, entering client information into a tool that may learn from it or expose it to others can require the client's informed consent. Many state bars have issued their own guidance too, so read your jurisdiction's version alongside the ABA opinion.

Training on inputs

Whether your prompts and uploads can be used to improve the vendor's models. Business tiers usually exclude this; confirm it in writing, for example on OpenAI's enterprise privacy page for ChatGPT business plans.

Retention

How long chats and files are stored and whether you can delete them. Match this to your records policy.

Human review

Whether vendor staff may read conversations for abuse monitoring, and under what conditions.

Data location

Where data is processed, which matters for cross-border matters and client outside counsel guidelines.

Which browser extension permissions should worry a law firm?

Be most cautious with any extension that can read and change data on all websites. In a legal practice that reach covers court e-filing portals, client extranets, webmail and the document management system.

• Read and change all your data on all websites: needed by AI sidebars and page summarisers, and the single biggest confidentiality exposure.
• Userscript managers such as Tampermonkey or Violentmonkey: they run whatever code a script contains on any site, so they belong on a personal profile, not the one you use for client work.
• Read your browsing history: reveals which matters, clients and opponents you have been researching.
• Cookie access: can expose logged-in sessions to research databases and client portals.

Chrome lets you narrow an extension's reach after installing it. Open chrome://extensions, click Details on the extension, and under Site access choose On click or On specific sites. That keeps a helper useful on the pages you choose and blind everywhere else.

Our permissions guide explains each warning Chrome shows in plain English, and our methodology sets out how we score extension risk before listing anything.

Which Chrome AI extensions can lawyers use, and how carefully?

These are general-purpose AI extensions, not legal research tools. Each one can read the pages you open, so use them on a work profile with site access limited, and only with material you are comfortable sending to the vendor.

For PDFs, the Adobe Acrobat extension opens files in Chrome with Adobe's viewer. For wider research helpers, browse the research extensions category.

What AI tools help paralegals?

Paralegals get the most from AI on high-volume, checkable tasks: summaries, chronologies, first-pass cite checks and correspondence drafts. The supervising lawyer remains responsible for the output, a point the ABA opinion ties to the duty to supervise non-lawyer staff.

1. Document summaries: open the production or transcript in Acrobat and ask for a summary with page references, then spot-check each reference.
2. Chronologies: paste de-identified email extracts into the firm's approved assistant and ask for a dated timeline table; confirm every date against the source.
3. Cite checking: run each citation from a draft through the firm's research platform citator; never rely on a chatbot's statement that a case is good law.
4. Correspondence: draft cover letters for discovery or filings from a firm template, then have the lawyer review before sending.
5. Time entries: record actual time as you work, since AI can compress tasks and billing must reflect real effort.

Paralegals in small practices often cover admin too; our guide to AI tools for small business covers invoicing and scheduling helpers that fit that side of the job.

How do you set up a safe AI workflow in Chrome?

Separate client work into its own Chrome profile, allow only approved extensions there, and sign in to AI tools with firm accounts. The steps below take one sitting and make later audits simple.

1. Create a work profile: click your profile picture at the top right of Chrome, choose Add, and name it for the firm. Personal extensions and logins stay in the other profile.
2. Install only firm-approved extensions in that profile, then open chrome://extensions and set each one's Site access to On click unless it genuinely needs more.
3. Sign in to your research platform and business AI account in the work profile only, and turn off chat history or model training in the tool's settings where it offers that switch.
4. Pin the extensions you use daily with the puzzle-piece icon so you notice if an unfamiliar one appears.
5. On shared machines, clear browsing data when you finish: press Ctrl+Shift+Delete on Windows or ChromeOS, or Cmd+Shift+Delete on a Mac.
6. Review the profile's extensions each quarter and remove anything nobody has used.

What can't AI tools do for lawyers?

AI cannot take professional responsibility, exercise judgment about a client's goals, or guarantee that what it says is current law. It speeds up reading and drafting; it does not replace the lawyer who signs.

• It cannot confirm a case is still good law without a citator run by you.
• It does not know facts from your client meeting unless you share them, which raises the confidentiality questions above.
• It cannot judge tone for a hostile opposing counsel or a nervous client the way you can.
• It may reflect whichever jurisdiction dominates its training data, not yours.
• It does not change fee rules: under the ABA opinion, hourly billing must reflect time actually spent.

Used inside those limits, the combination of a grounded research platform, a vetted assistant and a tidy browser setup saves real hours on reading and first drafts. Developers building internal legal tooling can compare notes in our AI tools for developers guide, and every other post lives on the blog.