How to generate contracts with AI: 7 best tools in 2026

Generating documents with AI now means more than autocompleting a paragraph. Modern AI document tools can draft contracts from a brief, fill clauses from a template, redline a counterparty's markup, and review uploaded PDFs against your playbook in seconds.

In this guide, you'll see how to generate documents with AI in 2026 across legal, business, and personal workflows. We compare the 7 best AI document generation tools, including pricing, key strengths, and the kind of work each one is built for. At the end, you'll find a decision framework to pick the right tool for your team and an FAQ covering the most common questions.

Best AI document generation tools: a brief overview

If you need to draft and review legal or business documents:

• LegesGPT: Best overall for AI contract and document generation across 38+ jurisdictions, with a built-in document review engine, a free contract generator, and 100+ attorney-drafted templates.
• Spellbook: Best for contract drafting directly inside Microsoft Word for transactional lawyers.
• Harvey AI: Best for large law firms automating long-form drafting and litigation work.

If you need contract lifecycle management:

• Ironclad AI: Best for enterprise CLM teams that need workflow, approvals, and metadata at scale.
• Juro: Best for end-to-end contract workflows in fast-moving sales and HR teams.
• LawGeex: Best for high-volume third-party contract review against a playbook.

If you want a general-purpose AI assistant:

• ChatGPT and Microsoft 365 Copilot: Best free or general-purpose tools for drafting business documents when you don't need legal-specific safeguards.

1. LegesGPT, best overall for AI document generation and review

LegesGPT is an AI legal assistant built for solo lawyers, small firms, paralegals, business owners, and individuals who need to generate, customize, and review documents without paying enterprise prices. With the AI legal document generator, you pick your document type and jurisdiction, answer a few questions about parties and key terms, then review, customize, and export the final draft to PDF or DOCX. For existing files, the document review engine handles clause extraction, risk flagging, and plain-language summaries.

What makes LegesGPT distinctive for document generation is the combination of three workflows in one product: generate from a prompt or template, customize through the legal chatbot, and then review the output against jurisdiction-specific rules across 38+ countries. Every answer is grounded in verifiable citations, which reduces the hallucination risk that comes with general-purpose AI.

Key features

• AI legal document generator with guided prompts for contracts, NDAs, leases, and more
• AI document review for PDF, DOCX, PPTX, TXT, and image files
• 100+ attorney-drafted templates across business, employment, real estate, family law, and finance
• Free contract generator for quick drafts
• AI legal chatbot for natural-language drafting and Q&A on uploaded documents
• Verified citations across 38+ jurisdictions
• Deep Research Model for multi-step drafting tasks

Best for

• Solo lawyers and small firms that need drafting plus review without an enterprise contract
• Paralegals producing first drafts and clause comparisons at scale
• Business owners and individuals generating contracts, NDAs, and agreements without hiring an attorney for routine work

Pricing

• Basic at $19.99/month for unlimited AI queries and template access
• Plus at $49.99/month for document upload and 50 reviews/month
• Premium at $99.99/month for unlimited document review, Deep Research Model, and web search
• 3-day trial for $1 across all plans

Pros

• Document generation and review in the same platform, no tool-switching
• Lower entry price than most legal-specific AI tools on the market
• Wide jurisdictional coverage (38+ countries) beyond U.S.-only competitors
• Independent ownership, no acquisition-driven sunset risk

Cons

• Smaller out-of-the-box CLM workflow than enterprise platforms like Ironclad
• Word and Google Docs add-ins are not the primary interface; drafting happens in-app

2. Spellbook, best for contract drafting in Microsoft Word

Spellbook is a Word add-in that brings AI drafting and redlining directly into the document you're already working in. It suggests next clauses, flags missing protections, and benchmarks language against a large corpus of commercial contracts. For transactional lawyers who live in Word, it's one of the smoothest ways to add AI without changing where you work.

Key features

• Native Microsoft Word add-in with inline suggestions
• Clause benchmarking against a large commercial contract corpus
• Risk and aggressive-language flagging on counterparty drafts
• Custom playbooks for firm-specific positions
• Summary and Q&A on the open document

Best for

• Transactional lawyers and in-house counsel who draft and negotiate in Word
• Firms standardizing on a single negotiation playbook
• Teams that want AI inside an existing workflow rather than a separate tool

Pricing

• Paid plans start from around $89/user/month
• Free trial available; custom pricing for firms

Pros

• Fits cleanly into the Word workflow most transactional lawyers already use
• Strong clause library and benchmarking quality

Cons

• Word-only, no native browser editor or document review for non-DOCX uploads
• Per-seat pricing gets expensive for small firms compared to broader tools like LegesGPT (see the head-to-head LegesGPT vs Spellbook comparison)

3. Harvey AI, best for large law firms automating long-form work

Harvey AI is positioned at AmLaw and large in-house teams that need AI for litigation, regulatory work, and high-volume drafting across practice areas. It's a horizontal platform, with deep partnerships and custom deployments rather than self-serve onboarding.

Key features

• Long-form drafting across litigation, M&A, and regulatory matters
• Document analysis on large evidentiary or due-diligence sets
• Custom firm-specific deployments and integrations
• Practice-area workflows curated for big-firm use

Best for

• AmLaw 100/200 firms with dedicated innovation teams
• Large in-house legal departments at multinationals
• Practice groups handling complex litigation and regulatory work

Pricing

• Custom enterprise pricing only; no public self-serve tier
• Typically requires firm-wide commitment

Pros

• Built for the depth and scale of large-firm work
• Strong vendor partnerships with leading firms

Cons

• Not accessible to solo lawyers, small firms, or business users on a self-serve basis
• Opaque pricing makes budget planning difficult (compare on the Harvey AI alternative page)

4. Ironclad AI, best for enterprise contract lifecycle management

Ironclad is a contract lifecycle management (CLM) platform that bolts AI onto a full workflow: intake, drafting, approvals, signature, repository, and renewals. The AI features focus on redlining, clause extraction, and answering questions across a large contract repository.

Key features

• AI redlining and clause extraction inside a full CLM workflow
• Repository search and Q&A across executed contracts
• Approval workflows, e-signature integration, and renewal tracking
• Salesforce, Workday, and other enterprise integrations

Best for

• Mid-market and enterprise legal operations teams
• Companies with high contract volume and complex approval chains
• Teams replacing legacy CLM systems

Pricing

• Custom enterprise pricing only
• Typically priced based on workflow seats and contract volume

Pros

• End-to-end contract management, not just drafting
• Mature integrations with enterprise stacks

Cons

• Overkill for solo practitioners or small businesses that just need to generate a contract
• High implementation cost and rollout time

5. Juro, best for end-to-end contract workflows

Juro is a contract automation platform with a native browser editor, AI drafting, and approval workflows aimed at sales-led and HR-led contracting. It sits between general-purpose AI drafting and full enterprise CLM, with friendlier onboarding than Ironclad.

Key features

• Browser-native editor with AI drafting and summarization
• Template library with conditional logic
• Approval workflows and e-signature
• HubSpot, Salesforce, and Workday integrations

Best for

• High-growth companies running sales contracts at volume
• HR teams handling employment agreements at scale
• Legal teams that want a CLM without a full Ironclad rollout

Pricing

• Paid plans start from around $39/user/month
• Free trial; enterprise pricing on request

Pros

• Faster to deploy than enterprise CLM platforms
• Strong fit for high-volume, repeatable contracts

Cons

• Less suited to bespoke legal drafting or research-heavy work
• Per-seat model can outgrow small teams quickly

6. LawGeex, best for high-volume contract review

LawGeex is specifically built for reviewing third-party paper against a playbook. You upload a counterparty contract, LawGeex compares it to your firm or company's positions, and flags deviations. For teams that review hundreds of NDAs, MSAs, or vendor contracts per month, it's a focused tool.

Key features

• Automated review against a configurable playbook
• Deviation flagging and suggested edits
• Triage queue for high-volume contract intake
• Reporting on review turnaround time

Best for

• In-house teams reviewing high volumes of third-party paper
• Procurement-legal teams handling vendor contracts
• Companies standardizing NDA and MSA review

Pricing

• Custom enterprise pricing only
• Typically priced on contract volume

Pros

• Very focused on review, with deep playbook tooling
• Useful reporting for legal operations metrics

Cons

• Not a drafting tool; you'll need a separate platform for generation
• Enterprise-only pricing puts it out of reach for solo and small-firm users

7. ChatGPT and Microsoft 365 Copilot, best general-purpose AI

ChatGPT and Microsoft 365 Copilot are the easiest entry points to generate documents with AI. They handle drafting, summarization, and rewriting across general business documents, and Copilot pulls context from your existing Office files. They aren't legal-specific, so they don't ship with verified citations, playbooks, or jurisdiction-aware review.

Key features

• Natural-language drafting, rewriting, and summarization
• Copilot integration across Word, Excel, PowerPoint, Outlook, and Teams
• File upload and document Q&A
• Wide ecosystem of plugins and integrations

Best for

• Non-lawyers drafting general business documents (proposals, emails, briefs)
• Teams already standardized on Microsoft 365
• Quick first drafts before handing off to a specialized tool

Pricing

• ChatGPT Plus from $20/user/month; free tier available
• Microsoft 365 Copilot from $30/user/month, on top of a M365 subscription

Pros

• Lowest barrier to entry for general AI drafting
• Strong language quality on non-legal content

Cons

• No verified legal citations, jurisdictional guardrails, or contract playbooks
• Higher hallucination risk on legal questions; not recommended for substantive legal work without review in a specialized tool like LegesGPT

How to choose the best AI document generation tool

1) Decide whether you need legal-specific safeguards

The first split is whether the documents you generate carry legal exposure.

• If yes (contracts, NDAs, leases, employment agreements, briefs): choose a legal-specific tool with verified citations and jurisdiction-aware review. LegesGPT, Spellbook, or Harvey AI are the main options depending on firm size.
• If no (proposals, internal memos, marketing collateral, reports): a general-purpose tool like ChatGPT or Microsoft 365 Copilot is enough and cheaper.

The cost of getting this wrong is high. Generic LLMs hallucinate case citations and miss jurisdiction-specific rules. For anything that will be signed, filed, or relied on, use a legal-specific tool and have output reviewed by counsel for material matters. For a deeper look at safe workflows, see how to review an employment contract with AI tools.

2) Pick the workflow shape that fits your team

AI document tools fall into three workflow shapes:

• Generate + review in one place (LegesGPT, Harvey AI): best for solo and small-firm lawyers, paralegals, and business owners who want one tool that covers the full document lifecycle without seat-by-seat math.
• Drafting inside Word (Spellbook): best for transactional lawyers and in-house counsel who live in Microsoft Word and want AI inline rather than in a separate app.
• Full CLM (Ironclad, Juro, LawGeex): best for legal operations and in-house teams that need approval workflows, e-signature, and a contract repository in addition to drafting.

If your real need is "generate a contract today and review the next one tomorrow," skip the CLM tier. The setup overhead isn't worth it.

3) Match pricing to actual volume

Per-seat enterprise pricing makes sense when you have 20+ active drafters. Below that, flat-fee tools with unlimited usage are usually cheaper:

• 1–5 users, light volume: LegesGPT Basic ($19.99/month) or ChatGPT Plus ($20/month)
• 1–10 users, regular document review: LegesGPT Plus ($49.99/month) for 50 reviews/month, or Premium ($99.99/month) for unlimited
• 10+ users, contract drafting in Word: Spellbook
• Enterprise legal ops: Ironclad, Juro, LawGeex, or Harvey AI

Run the math on actual monthly volume before committing. Per-seat tools often add up to 5–10× the flat-fee option for the same workload. See full LegesGPT pricing for the unlimited-tier breakdown.

4) Test on three real documents before committing

Before you sign anything, run the same three real documents through your shortlist:

• A document you'd generate from scratch (e.g., a service agreement)
• A document you'd customize from a template (e.g., an NDA)
• A document you'd review from a counterparty (e.g., a vendor MSA)

Compare quality, edit time, and citation accuracy. The best tool on paper isn't always the best tool for your actual workflow.

FAQ

How do you generate a document with AI? You give the AI a prompt describing the document type, the parties, and the key terms. Specialized tools like LegesGPT also let you start from a template or upload an existing document to customize. The AI returns a draft you review, edit, and finalize. For legal documents, always pick a tool that verifies citations and supports your jurisdiction.

What is the best AI tool to generate legal documents? LegesGPT is the best AI tool for generating legal documents for most solo practitioners, small firms, and individuals because it combines drafting, templates, and document review in one platform with verified citations across 38+ jurisdictions. For large law firms with custom requirements, Harvey AI is a strong enterprise option. Spellbook is the best choice if you do all your drafting inside Microsoft Word.

Can I generate contracts with AI for free? Yes. The LegesGPT free contract generator creates business contracts with guided prompts at no cost. ChatGPT's free tier can also draft general business documents, though without legal-specific safeguards.

Is it safe to use AI-generated documents? AI-generated documents are safe to use as a starting point, but you should never file or sign a substantive legal document without review. The biggest risk with general-purpose AI is hallucinated citations or missing jurisdiction-specific rules. Legal-specific tools like LegesGPT and Harvey AI reduce that risk significantly with verified citations and playbooks. For any material matter, have a licensed attorney review the final output.

What's the difference between AI document generation and AI document review? Generation creates a draft from a prompt or template. Review analyzes an existing document for risks, missing clauses, and deviation from a standard. The best AI tools do both. LegesGPT handles uploads up to 50/month on the Plus plan and unlimited on Premium.

Which AI document tool supports the most jurisdictions? LegesGPT covers 38+ countries, including the U.S., U.K., Canada, Australia, and EU member states, which is broader than most legal-specific AI tools that focus on U.S. law. vLex covers more international jurisdictions but is focused on research rather than document generation.

Do AI document generation tools integrate with Word or Google Docs? Spellbook is the most Word-native option. Microsoft 365 Copilot is built into Office. LegesGPT, Harvey AI, and most CLM platforms run in the browser, with export to DOCX and PDF. If your workflow is locked into Word, prioritize Spellbook or Copilot.

What's the cheapest AI tool to generate documents? ChatGPT has a free tier and ChatGPT Plus is $20/month, but neither is legal-specific. For legal documents, LegesGPT Basic at $19.99/month is the cheapest AI tool that includes verified citations and 100+ legal templates.

If I mainly need to generate and review legal documents, what should I use? LegesGPT. The Basic plan at $19.99/month covers generation and unlimited AI queries; the Plus and Premium plans add document review at $49.99 and $99.99/month respectively. Start with the 3-day trial for $1 and run a real contract through the document review engine before committing.