# Best AI Tools for Lawyers and Legal Teams in 2026

October 1, 2026 · Justin Canetti · 10 min read · Comparisons

## The short answer

**Legal AI splits into research, contracts, discovery, and practice management, and most firms pair a tool from two or more of these. This is general information, not legal advice.**

- **Best for legal research:** CoCounsel (Westlaw content) or Lexis+ with Protégé.
- **Best for firm-wide drafting and workflows:** Harvey.
- **Best for contract review and redlining in Word:** Spellbook.
- **Best for e-discovery and document review:** Everlaw or Relativity aiR.
- **Best for practice management and time capture:** Clio.
- **Best for scheduling and client follow-up:** OpenAssistant.

Before using any of them with client material, check confidentiality, privilege, and data-handling terms, and your bar's guidance on AI. Nothing here is a statement that a tool is compliant for your situation.

## AI Tools for Lawyers at a Glance

| Tool | Best for | Key capabilities | Pricing |
| --- | --- | --- | --- |
| **Harvey** | Law firms and in-house teams wanting a broad legal AI platform | Legal research, document vault for bulk analysis, contract intelligence, workflow agents, shared workspaces | Not published |
| **CoCounsel Legal (Thomson Reuters)** | Research grounded in Westlaw and Practical Law | Cited research, Brief Builder, Tabular Analysis, integrations with iManage, NetDocuments, Word, and Outlook | Contact sales |
| **Lexis+ with Protégé (LexisNexis)** | Research, drafting, and analysis on LexisNexis content | AI assistant with drafting, review, analysis, and citation checking workflows | Not published |
| **Spellbook** | Contract review and drafting inside Word | Redlining, clause drafting, playbooks, comparison, contract repository | Not published |
| **Everlaw** | Litigation e-discovery and investigations | Deep Dive questions over case data, coding suggestions, review assistant, writing assistant | Not published |
| **Relativity aiR** | Large-scale discovery and review | AI-assisted review with citations, case strategy, collection, processing, legal hold, production | Contact sales |
| **Clio** | Practice management, billing, and time capture | Matter management, billing, AI summaries, client message drafts, time entry narratives | Starting at $49 per user per month billed annually; see vendor for tiers |
| **OpenAssistant** | Scheduling and communication with clients and co-counsel | Own phone number and email, multi-calendar scheduling, follow-ups, shared tasks | Private beta; request access |

*Details reflect each vendor's public site as of September 2026. Pricing and features change often, so confirm with the vendor.*

## How We Chose

This is general information, not legal advice, and it is not an endorsement of any tool for a particular matter. We picked tools across the main legal jobs, from research to discovery to billing, that are current as of September 2026.

For legal work the tool matters less than the terms. Before putting client material into any AI product, check its confidentiality commitments, whether it protects privilege, how data is stored and used, whether it trains on your inputs, and what your jurisdiction's bar says about AI. We do not claim any tool here is compliant for you. Our guide to [how to know if an AI tool is safe](https://openassistant.us/blog/how-to-know-if-an-ai-tool-is-safe) is a useful checklist.

## Harvey: Best for a Broad Legal AI Platform

Harvey is built for law firms and in-house teams. Per its site, it covers legal research, a document vault for bulk analysis, contract intelligence, purpose-built agents for multi-step work, and shared workspaces for collaborating with clients and co-counsel. The vendor lists SOC 2 Type II, ISO 27001, SAML SSO, and audit logging.

The limit is access and cost: pricing is not published and it is sold to organizations, so smaller practices should compare it with lighter options.

## CoCounsel Legal: Best for Research Grounded in Westlaw

Thomson Reuters' CoCounsel Legal draws on Westlaw primary law and Practical Law guidance, shows step-by-step reasoning, and links citations so you can verify them. It also includes Brief Builder and Tabular Analysis, which the vendor says reviews up to 10,000 documents against 100 questions, and connects to iManage, NetDocuments, SharePoint, Word, and Outlook.

The limit is that it is most valuable if you already use Westlaw, and pricing is by quote. As with any legal AI, verify every citation yourself.

## Lexis+ with Protégé: Best for Research and Drafting on LexisNexis Content

In February 2026 LexisNexis renamed Lexis+ AI to Lexis+ with Protégé. You describe what you want to accomplish, and the system applies models, agents, and selected sources, with workflows for drafting, review, analysis, and citation checking.

The limit is the same as for its main competitor: it works best for firms already on LexisNexis, pricing is not published, and output still needs attorney review.

## Spellbook: Best for Contract Review and Drafting in Word

Spellbook focuses on transactional work. Per its site, it redlines contracts and flags risks, drafts clauses and agreements, lets teams encode standards as playbooks, compares against benchmarks, and monitors a repository of signed contracts. It works with Microsoft Word, Google Docs, and document systems such as iManage.

The limit is scope: it is for contracts, not litigation or research. The vendor lists SOC 2 Type II and describes a zero data retention policy, but read the current terms yourself. Pricing is not published.

## Everlaw: Best for Litigation E-Discovery and Investigations

Everlaw is a cloud platform for litigation and investigations. Its AI tools include Deep Dive, which answers natural language questions about case data, plus coding suggestions, a review assistant, a writing assistant, predictive coding, and clustering. It serves law firms, corporate legal departments, and government agencies.

The limit is that it is a discovery platform, not a general legal assistant, and pricing is not published on the homepage.

## Relativity aiR: Best for Large-Scale Discovery and Review

Relativity's aiR provides AI-assisted document review with citations, case strategy support that surfaces key facts and witness preparation material, and sits within a platform that covers collection, processing, legal hold, and production. Per the vendor, 198 of the Am Law 200 firms use Relativity.

The limit is that it is built for complex, high-volume matters and is priced by quote, which can be more than a small team needs.

## Clio: Best for Practice Management and Time Capture

Clio is practice management software: matters, billing, and client communication, with Clio Manage for operations and Clio Work for research and AI productivity. Per the vendor, Clio Work is AI that reads matter documents, transcripts, and recordings and drafts work with citations, and third-party reviews also mention client message drafts and billing narratives from time entries.

The limit is pricing clarity. Plans start at $49 per user per month billed annually, and the vendor says AI is built into every plan. Higher-tier prices and AI usage terms are not clearly published on the pricing page, so confirm with Clio.

## OpenAssistant: Best for Client and Co-Counsel Scheduling and Follow-Up

We build OpenAssistant, so weigh this entry accordingly. [OpenAssistant](https://openassistant.us/product) is an executive assistant with its own name, phone number, and email (or one on your company domain). It handles work involving other people: scheduling across many calendars, multi-person email threads, follow-ups, hand-offs and approvals, and shared tasks. You can set up plain-English workflows that run on demand, on a schedule, or on a trigger. See the [AI scheduling assistant](https://openassistant.us/ai-scheduling-assistant) page.

It is in private beta, so you need to request access. It is not a legal research, drafting, or discovery tool and does not replace any product above or your practice management system. It lists SOC 2 Type II, GDPR and CCPA compliance, SAML SSO, SCIM and RBAC on Team plans, audit logs on Enterprise, and no training on customer data, but you should still review its terms against your own confidentiality and privilege obligations. See the [Trust Center](https://openassistant.us/trust).

## How to Choose

- **Your main need is research:** compare CoCounsel and Lexis+ with Protégé, and choose the one that matches the research database you already pay for.
- **You want one platform for a firm or department:** evaluate Harvey.
- **Contracts are your daily work:** Spellbook.
- **You run discovery:** Everlaw or Relativity aiR, depending on matter size and your existing platform.
- **Billing and matter admin are the bottleneck:** Clio.
- **Scheduling and chasing clients, witnesses, and co-counsel takes your day:** an assistant like OpenAssistant. See our [AI calendar assistants](https://openassistant.us/blog/best-ai-calendar-assistants) roundup.

Whatever you choose, run a pilot on non-sensitive material first, verify all outputs, and get written answers on data handling.

## Tasks an AI Assistant Can Take Off Your Plate

Some legal-adjacent work is administrative rather than legal judgment. See our list of [tasks to automate with AI](https://openassistant.us/blog/tasks-to-automate-with-ai). Common ones for lawyers:

- Finding a time for a client call, deposition prep, or mediation across several calendars.
- Sending reminders for outstanding documents or signatures.
- Drafting routine client status emails for your review.
- Turning call notes into a time entry narrative.
- Summarizing a long email thread before you reply.
- Preparing a brief on who is attending a meeting and prior correspondence.
- Following up with opposing counsel or vendors about scheduling.

Keep privileged and confidential material out of any tool until you have reviewed its terms.

## Frequently asked questions

### What are the best AI tools for lawyers in 2026?

Commonly used options include Harvey, CoCounsel, Lexis+ with Protégé, Spellbook, Everlaw, Relativity aiR, and Clio. The best choice depends on whether your need is research, contracts, discovery, or practice management.

### Is it ethical for lawyers to use AI?

Rules vary by jurisdiction. Many bars have issued guidance on AI that covers competence, confidentiality, supervision, and verifying outputs, so check your own bar's guidance. This article is general information, not legal advice.

### Can AI legal research tools make up citations?

Any AI can produce errors. Tools such as CoCounsel link citations to source material so you can verify them, but you should check every authority yourself before relying on it.

### Which AI tools are used for e-discovery and document review?

Everlaw and Relativity aiR both offer AI-assisted review. Everlaw includes Deep Dive and coding suggestions, and Relativity aiR provides AI review with citations within a broader discovery platform.

### Do legal AI tools train on my client data?

It depends on the vendor and plan. Thomson Reuters says user data is not used for model training, and Spellbook describes a zero data retention policy. Confirm current terms in writing for any tool you consider.

### What AI helps with legal time tracking?

Third-party reviews say Clio's AI features can generate billing narratives from time entries. Ask the vendor for current capabilities and pricing.

## Sources

- [Harvey](https://www.harvey.ai)
- [CoCounsel Legal, Thomson Reuters](https://legal.thomsonreuters.com/en/products/cocounsel-legal)
- [Lexis+ with Protégé, LexisNexis](https://www.lexisnexis.com/en-int/products/lexis-plus-protege)
- [Spellbook](https://spellbook.com/)
- [Everlaw](https://www.everlaw.com)
- [Relativity aiR](https://www.relativity.com/data-solutions/aiR/)
- [Clio pricing](https://www.clio.com/pricing/)

Facts last verified 2026-09-30.

## More comparisons

- [Best AI Tools for Consultants in 2026](https://openassistant.us/blog/best-ai-tools-for-consultants)
- [Best AI Tools for Executive Assistants in 2026](https://openassistant.us/blog/best-ai-tools-for-executive-assistants)
- [Best AI Tools for Financial Advisors in 2026](https://openassistant.us/blog/best-ai-tools-for-financial-advisors)
- [Best AI Personal Assistants and Agents in 2026, Compared](https://openassistant.us/blog/best-ai-personal-assistants-2026)

## If your work involves other people

OpenAssistant is an executive assistant for teams, with its own phone number and email. Read how it compares:

- [What OpenAssistant does](https://openassistant.us/product)
- [OpenAssistant solutions by role](https://openassistant.us/solutions)

## Keep reading

**Guides**

- [Best AI Executive Assistants in 2026 (Compared)](https://openassistant.us/blog/best-ai-executive-assistants-2026)
- [Best AI Assistants You Can Text (iMessage, WhatsApp, SMS) in 2026](https://openassistant.us/blog/best-ai-assistants-you-can-text)
- [Best AI Assistants That Make Phone Calls for You (2026)](https://openassistant.us/blog/ai-assistants-that-make-phone-calls)
- [How to Use AI as an Executive Assistant (Step by Step)](https://openassistant.us/blog/how-to-use-ai-as-an-executive-assistant)
- [How to Know If an AI Tool Is Safe to Use in 2026](https://openassistant.us/blog/how-to-know-if-an-ai-tool-is-safe)
- [How to Use AI at Work: 10 Practical Ways in 2026](https://openassistant.us/blog/how-to-use-ai-at-work)
- [How Businesses Can Use AI Beyond ChatGPT in 2026](https://openassistant.us/blog/ai-beyond-chatgpt-for-business)
- [20 Tasks You Can Automate With AI at Work in 2026](https://openassistant.us/blog/tasks-to-automate-with-ai)
- [9 Best AI Calendar Assistants for 2026](https://openassistant.us/blog/best-ai-calendar-assistants)
- [7 Best AI Email Assistants for 2026](https://openassistant.us/blog/best-ai-email-assistants)

**Product pages**

- [AI executive assistant](https://openassistant.us/ai-executive-assistant)
- [Solutions](https://openassistant.us/solutions)
- [Product](https://openassistant.us/product)
- [OpenAssistant for teams](https://openassistant.us/teams)
- [AI scheduling assistant](https://openassistant.us/ai-scheduling-assistant)
- [AI email assistant](https://openassistant.us/ai-email-assistant)
- [AI meeting prep and daily agenda](https://openassistant.us/ai-meeting-prep)
- [Pricing](https://openassistant.us/pricing)
- [Trust Center](https://openassistant.us/trust)