The 10 Best AI Legal Tools in 2026
Legal AI has moved from pilot projects to daily work. Large firms run Harvey and Legora across practice groups, research platforms such as CoCounsel and Lexis+ with Protégé ground answers in their own case law, and specialist tools now handle contract review, eDiscovery, personal injury demands and brief writing.
We picked 10 tools from the 38 legal products profiled on All About AI and ranked each for the job it does best. For every pick you get what it does, who it suits, key features, pros and cons, current pricing and a bottom line. Prices come from vendor pages and published reports as of late October 2026, and each tool links to a full profile with sources.
Most legal AI is sold on custom quotes, so pricing below often reads "Custom." Every tool on this list also produces output that needs attorney review before it reaches a client or a court.
10 best AI legal tools: TL;DR
- Harvey: Best enterprise legal AI platform
- CoCounsel: Best AI assistant grounded in Westlaw
- Lexis+ with Protégé: Best AI research grounded in LexisNexis and Shepard's
- Legora: Best collaborative workspace for large-scale review
- Spellbook: Best contract drafting and review in Word
- Paxton: Best research assistant with published pricing
- LegalOn: Best contract review for in-house teams
- Everlaw: Best AI eDiscovery platform
- EvenUp: Best for personal injury firms
- Clearbrief: Best for citing the record in litigation writing
How we chose these tools
We ranked the tools on five criteria:
- Grounding and citations: whether answers link to authorities or source documents a lawyer can check.
- Practice fit: how well the tool matches research, transactional, litigation or plaintiff work.
- Security and confidentiality: data training policies, certifications and enterprise controls.
- Workflow fit: Word add-ins, document management integrations and team features.
- Pricing transparency: published prices, trials and how quotes are structured.
Comparison table
| Tool | Best for | Free option | Paid from |
|---|---|---|---|
| Harvey | Enterprise legal AI | Evaluation trial | Custom |
| CoCounsel | Westlaw-grounded work | No | About $292.50/user/month (reported) |
| Lexis+ with Protégé | LexisNexis research | No | Custom |
| Legora | Large-scale review | No | Custom |
| Spellbook | Contract drafting | 7-day trial | Custom |
| Paxton | Research and drafting | 7-day trial | $2,999/user/year |
| LegalOn | In-house contract review | No | Custom |
| Everlaw | eDiscovery | Everlaw for Good | Custom |
| EvenUp | Personal injury | No | Custom |
| Clearbrief | Litigation writing | Free for law students | $300/month |
1. Harvey
What it does: Harvey is enterprise legal software that combines agents, document analysis, contract intelligence, research and shared workspaces for law firms and legal departments.
Best for: Large law firms and in-house teams rolling out AI across practice groups.
Harvey was founded in 2022 and has grown fast. The company reports more than 3,500 legal organizations and 200,000 professionals in over 85 countries, and it announced $550 million in funding at a $15.5 billion valuation in September 2026. A typical engagement starts with uploading documents or working in a connected workspace, then asking Harvey to analyze, compare, summarize, draft or extract.
Vault handles large document collections, agents route complex tasks and Shared Spaces bring firms, clients and co-counsel into one governed workspace with ethical walls. Command Center gives administrators visibility into usage across teams and offices.
Harvey uses models from Anthropic, Google DeepMind and OpenAI, and administrators control which are available. Its benchmark scores are vendor-reported. Pricing is negotiated per deployment.
Key features
- Vault: query large document collections.
- Agents: route multi-step legal work.
- Shared Spaces: collaborate with clients and co-counsel.
- Command Center: firm-wide usage visibility.
Pros
- Broadest enterprise legal AI platform.
- Multi-model choice for administrators.
- Strong governance and ethical-wall controls.
Cons
- No published prices.
- Output can contain errors or omissions.
- Deployment may need implementation work.
Pricing
- Enterprise: custom.
- Evaluation trial: free for authorized users, with limits.
Bottom line
Harvey is the leading choice for firms that want one AI platform across the whole practice. Read the full Harvey review or compare Harvey vs Legora.
2. CoCounsel
What it does: CoCounsel is Thomson Reuters' legal AI assistant for document analysis, drafting, research and multi-step workflows grounded in Westlaw and Practical Law.
Best for: Firms and legal departments already using Westlaw or Practical Law.
CoCounsel began at Casetext in 2023, and Thomson Reuters acquired Casetext for $650 million that year. Thomson Reuters said in February 2026 that one million professionals across 107 countries and territories had chosen CoCounsel across its products. Users can summarize and compare documents, extract information, prepare deposition materials, build timelines, draft text and check contract policies.
CoCounsel Legal, launched in August 2025, adds Deep Research and agentic workflows that gather and synthesize authority. Knowledge Search finds material in a firm's own repositories, and integrations cover Microsoft 365 and document management systems. Thomson Reuters says it uses Anthropic, OpenAI and Google models alongside its own content and engineering.
Pricing varies by jurisdiction, attorney count and commitment, so published figures are starting points only.
Key features
- Deep Research: synthesized answers grounded in Westlaw.
- Agentic workflows: multi-step research and drafting.
- Knowledge Search: search firm repositories.
- Microsoft 365 integration: work inside Word and Outlook.
Pros
- Grounded in Westlaw and Practical Law content.
- Wide range of legal workflows.
- Customer content not used to train third-party models.
Cons
- Pricing varies by configuration.
- Some workflows need separate subscriptions.
- Some firms prefer competitor interfaces.
Pricing
- CoCounsel Essentials: about $292.50/user/month (reported starting figure).
- Westlaw Advantage with CoCounsel Essentials: about $415.35/user/month (reported).
- CoCounsel Legal: about $551.85/user/month (reported).
Bottom line
CoCounsel is the best AI assistant for Westlaw-centered practices. Read the full CoCounsel review or compare CoCounsel vs Lexis+ with Protégé.
3. Lexis+ with Protégé
What it does: Lexis+ with Protégé, formerly Lexis+ AI, is LexisNexis's legal research and workflow platform, combining LexisNexis content and Shepard's with drafting, document analysis and agentic AI.
Best for: Lawyers who rely on LexisNexis content and Shepard's citation checking.
Lexis+ AI debuted in October 2023, Protégé became generally available in the United States in January 2025 and the product took its current name in February 2026. A session can start with a legal question, an uploaded pleading or contract or a drafting request. Protégé can recommend actions based on a file, generate timelines, draft deposition questions and discovery requests and run Deep Research.
With permission, it draws on a document management system and stores large collections in Protégé Vault. Protégé General AI, available since October 2025, offers model choice including Anthropic Claude Sonnet 4 and OpenAI GPT-5.
Pricing is quote-based, and the rename means older Lexis+ AI documentation can be confusing.
Key features
- Shepard's integration: citation checking built into research.
- Deep Research: complex legal questions.
- Protégé Vault: store and query document collections.
- Model choice: general AI models for non-legal tasks.
Pros
- Grounded in LexisNexis content.
- Drafting, research and analysis in one place.
- Customer data not used to train public models.
Cons
- No public entry price.
- Output needs professional review.
- Rename complicates older documentation.
Pricing
- Lexis+ with Protégé: custom, based on organization size, content and seats.
Bottom line
Lexis+ with Protégé is the best AI research platform for LexisNexis subscribers. Read the full Lexis+ with Protégé review.
4. Legora
What it does: Legora is a collaborative legal AI workspace for research, review, drafting, large-scale extraction and agentic workflows.
Best for: Law firms and legal teams running diligence and portfolio reviews.
Legora, formerly Leya, was founded in Stockholm in 2023 and launched its platform in October 2024. It announced a $550 million Series E at an $8.8 billion valuation in October 2026 and reports more than 2,400 law firms and in-house teams across over 80 markets. Lawyers work through the browser, desktop app, Word and Outlook add-ins or connected document systems.
Tabular Review places documents in rows and requested facts, clauses, dates or risks in columns, which suits due diligence. Legal Research returns answers with structured citations, and Agent Pro, introduced in June 2026, plans, executes and reviews complex work across a project.
Agent Pro uses consumption pricing with a platform fee plus usage credits, all set in private customer agreements.
Key features
- Tabular Review: extraction grids across large document sets.
- Legal Research: cited answers.
- Agent Pro: project-level agentic work.
- Word and Outlook add-ins: work where lawyers draft.
Pros
- Excellent for large-scale review.
- Covers research, drafting and agents.
- Spending controls and usage dashboards.
Cons
- No public prices or trial.
- Credit costs are private.
- Agent output needs lawyer review.
Pricing
- Agent Pro: custom platform fee plus usage credits.
Bottom line
Legora is the best collaborative workspace for review-heavy legal work. Read the full Legora review or compare Legora vs Harvey.
5. Spellbook
What it does: Spellbook is a contract AI suite for drafting, review, redlining, playbooks and document repositories inside Microsoft Word.
Best for: Transactional lawyers and in-house teams who draft and negotiate contracts.
Spellbook launched its first generative contract review tool in 2022 and says more than 5,000 legal teams use it. The Word add-in covers Review, Draft, Ask, Benchmarks and Playbooks. It can run a first-pass review against team standards, draft clauses or full agreements and produce tracked redlines.
Playbooks turn recurring instructions into reusable checklists, Library and Repository make precedents and signed agreements searchable and Associate is a multi-document agent for transactional matters under attorney oversight. Spellbook says it has zero data retention agreements with OpenAI and Anthropic.
Pricing is based on licensed team members, and Spellbook focuses on contracts rather than case law research.
Key features
- Word add-in: review, draft and redline in place.
- Playbooks: reusable review standards.
- Associate: multi-document transactional agent.
- Repository: search and monitor signed contracts.
Pros
- Works where transactional lawyers draft.
- Strong playbook support.
- Seven-day free trial.
Cons
- No published price.
- Not for case law research.
- Suggestions need attorney review.
Pricing
- Spellbook Suite: custom, based on team members.
- Free trial: 7 days.
Bottom line
Spellbook is the best contract drafting assistant for lawyers who live in Word. Read the full Spellbook review or compare Spellbook vs LegalOn.
6. Paxton
What it does: Paxton is a legal AI assistant for cited US legal research, drafting and file analysis.
Best for: Solo attorneys and small firms who want published pricing.
Paxton covers US federal and state laws, regulations and appellate case law. In Assistant, users ask research questions and get clickable citations to authority, then draft contracts, clauses, letters, pleadings and emails. Its agentic drafting plans, researches and drafts rather than producing one unchecked response.
File analysis summarizes documents and surfaces legal insights, and Canvas lets you refine generated work. 2025 releases added OCR for scanned PDFs and images, templates, matter-based organization and medical chronologies.
Paxton publishes its Individual price, unlike most rivals, though the monthly rate is high for solo users.
Key features
- Cited legal research: US federal and state coverage.
- Agentic drafting: plan, research and draft.
- File analysis with OCR: scanned PDFs and images.
- Matters and medical chronologies: organize case work.
Pros
- Published pricing and a free trial.
- Research, drafting and analysis in one tool.
- Clickable citations.
Cons
- Expensive monthly rate.
- Underlying models not named.
- No public API terms.
Pricing
- Individual: $499/user/month or $2,999/user/year.
- Enterprise: custom.
- Free trial: 7 days.
Bottom line
Paxton is the best research assistant for smaller firms that want a clear price. Read the full Paxton review or compare Paxton vs CoCounsel.
7. LegalOn
What it does: LegalOn is a contract review and legal operations platform with AI review, drafting, playbooks, repositories, intake, triage and matter management.
Best for: In-house legal departments managing high contract volume.
LegalOn was founded in 2017, is headquartered in San Francisco and Tokyo and reports more than 7,000 customers. Core Review includes unlimited AI Assistant chat, review and redlining, repository search and more than 135 prebuilt playbooks, available in Word and on the web.
Contracting Suite adds custom playbooks, a Playbook Agent that turns precedents into playbooks and Vault features. Productivity Suite adds matter management, Intake Agent, Triage Agent and Matter Intelligence. LegalOn says customer data is never used to train third-party foundation models.
LegalOn does not publish dollar prices, and buyers must request a quote.
Key features
- 135+ prebuilt playbooks: review out of the box.
- Playbook Agent: build playbooks from precedents.
- Intake and Triage Agents: route legal requests.
- Public APIs: contracts, users and matters.
Pros
- Strong prebuilt playbooks.
- Unlimited review advertised on every plan.
- Grows into legal operations.
Cons
- No published prices.
- Seat limits not stated.
- No on-premises option stated.
Pricing
- Core Review, Contracting Suite and Productivity Suite: custom.
Bottom line
LegalOn is the best contract review platform for in-house teams. Read the full LegalOn review.
8. Everlaw
What it does: Everlaw is a cloud eDiscovery and litigation platform with review, legal holds, analytics, productions, deposition preparation, Storybuilder and Everlaw AI.
Best for: Litigation teams, government agencies and corporate legal departments handling discovery.
Everlaw was founded in 2010 in Oakland and says it serves 93 of the Am Law 200 and all 50 state attorneys general. Data comes in from Microsoft 365, Google Workspace, Zoom, Slack, iManage or native uploads, and teams search, cluster, review, code, redact, translate and produce it.
Deep Dive, generally available since December 2025, answers natural-language questions across document collections with citations and confidence information. Individual Review Assistant and Writing Assistant actions are free, while batch AI actions use credits. Storybuilder connects review with courtroom preparation.
Commercial pricing is based on peak hosted data volume, with unlimited users included.
Key features
- Deep Dive: cited answers across a document set.
- Predictive coding: reduce repetitive review.
- Storybuilder: build case narratives.
- Deposition Analyzer: prepare examinations.
Pros
- Unlimited users in data-based pricing.
- Citations and confidence on AI answers.
- Free program for qualifying nonprofits.
Cons
- Quote-based pricing.
- Batch AI actions cost credits.
- AI requests may involve subprocessors.
Pricing
- Commercial: custom, based on hosted data volume.
- Everlaw for Good: free for qualifying organizations, with a data cap.
Bottom line
Everlaw is the best AI eDiscovery platform for litigation teams. Read the full Everlaw review.
9. EvenUp
What it does: EvenUp analyzes medical records, prepares demand letters, summarizes bills and flags case tasks for personal injury firms.
Best for: Plaintiff-side personal injury practices.
EvenUp was founded in 2019 in San Francisco and says more than 2,000 firms use its platform. It raised a $150 million Series E in October 2025 at a valuation above $2 billion. Piai, its proprietary group of personal injury models, extracts treatment details, builds provider timelines and identifies liability, damages and missing material.
Teams create demand letters, medical summaries, complaints, negotiation sheets and interrogatory responses. Express Demands assembles exhibits with line-level references, and firms can add review by EvenUp legal professionals. Smart Workflows flags treatment gaps, missing documents and timing issues.
EvenUp publishes no prices, and its focus limits value outside personal injury.
Key features
- Piai models: built for medical records and damages.
- Express Demands: demands with line-level references.
- Professional review option: EvenUp legal staff check drafts.
- Smart Workflows: flag gaps and deadlines.
Pros
- Purpose-built for personal injury.
- Optional human review.
- Strong medical record handling.
Cons
- No published pricing.
- Output needs attorney review.
- Narrow practice focus.
Pricing
- Claims Intelligence Platform: custom, per-case pricing available.
- Express Demands: custom.
Bottom line
EvenUp is the best AI platform for personal injury firms. Read the full EvenUp review.
10. Clearbrief
What it does: Clearbrief is a Microsoft Word add-in that links factual statements in legal writing to source documents and checks citations.
Best for: Litigators, courts and government teams writing record-heavy briefs.
Clearbrief was founded in 2020 by litigator Jacqueline Schafer and says its users include AmLaw 200 firms, courts, government agencies and arbitrators. As a lawyer writes in Word, the add-in surfaces relevant discovery and transcript pages, suggests support for a sentence and inserts citations or hyperlinks.
It also builds hyperlinked timelines, fact sections, exhibits and tables of authorities, and reviews opposing briefs for unsupported assertions. Integrations include Relativity, iManage, NetDocuments, Clio, Fastcase and vLex. Clearbrief says it is SOC 2 Type II certified and never uses customer data to train large language models.
Solo pricing starts at $300 a month, and law students get free access.
Key features
- Source linking: connect each sentence to the record.
- Citation checks: verify support for assertions.
- Timelines and tables of authorities: generated in Word.
- Courtesy copies: readers see filings next to sources.
Pros
- Works inside Word.
- Strong fit for brief writing.
- Customer data not used for training.
Cons
- $300/month entry price.
- Enterprise quotas not published.
- Dated privacy policy.
Pricing
- Solo: $300/month.
- Enterprise Unlimited: custom.
- Law students: free.
Bottom line
Clearbrief is the best tool for tying litigation writing to the record. Read the full Clearbrief review.
How to choose the right AI legal tool
Start with your practice and your existing research subscriptions:
- Firm-wide AI platform: Harvey or Legora.
- Westlaw or Practical Law users: CoCounsel.
- LexisNexis users: Lexis+ with Protégé.
- Solo or small firm research with clear pricing: Paxton.
- Contract drafting in Word: Spellbook.
- In-house contract review and intake: LegalOn.
- eDiscovery: Everlaw.
- Personal injury: EvenUp.
- Brief writing tied to the record: Clearbrief.
Before buying, ask each vendor about data training policies, citation accuracy in your jurisdiction and how usage is priced.
FAQs
What is the best AI tool for lawyers?
Harvey is the leading enterprise platform, while CoCounsel and Lexis+ with Protégé are the strongest research tools for firms on Westlaw or LexisNexis. Paxton suits smaller firms that want a published price.
Can AI do legal research?
Yes, with checks. CoCounsel, Lexis+ with Protégé, Legora and Paxton return answers with citations to authority, but lawyers should verify every citation and conclusion before relying on it.
Is legal AI safe for confidential client data?
Most legal AI vendors say customer data is not used to train models. CoCounsel, Lexis+ with Protégé, LegalOn and Clearbrief state this directly, and Spellbook says it has zero data retention agreements with its model providers. Review each vendor's security terms.
How much does legal AI cost?
Most tools use custom quotes. Paxton costs $499 per user monthly or $2,999 per year, Clearbrief starts at $300 a month and reported CoCounsel starting figures begin around $292.50 per user monthly.
What is the best AI tool for contract review?
Spellbook is the best choice for lawyers drafting in Word, and LegalOn suits in-house teams that want prebuilt playbooks and intake tools. Legora handles large-scale contract extraction for diligence.