You’ve decided to use AI for contract review. Good. Now the question is which tool. Here’s an honest comparison of what’s on the market, what each tool does well, and which one makes sense for your practice.
The Market Has Changed Fast
Two years ago, “AI contract review” meant enterprise platforms with six-figure contracts and six-month implementations. If you were a solo practitioner or ran a small firm, the technology existed — but it wasn’t built for you. You were either paying enterprise prices for features you’d never use, or you were pasting contracts into ChatGPT and hoping for the best.
That’s changed. There are now several tools specifically targeting smaller practices. But they’re not all built the same way, they don’t solve the same problems, and the pricing models range from “reasonable” to “you’ll need to call sales and sit through a demo to find out.”
Here’s what you need to know.
What AI Contract Review Actually Does
Before comparing tools, let’s clarify what we’re evaluating. AI contract review tools generally offer some combination of these capabilities:
Risk identification — flagging clauses that create legal or financial exposure. This is the core feature. If a tool can’t do this reliably, nothing else matters.
Plain-English explanations — translating legalese into language a non-lawyer (or a lawyer in a different practice area) can understand. Useful for client communications.
Redlining — suggesting specific edits with tracked changes. Some tools just flag risks; others tell you exactly what to change.
Playbooks — applying your firm’s standards automatically. Instead of manually checking every NDA against your preferred terms, the AI does it for you.
Benchmarking — comparing clauses against market standards. “This indemnity clause is broader than 85% of similar agreements” is more useful than “this clause exists.”
Jurisdiction awareness — factoring in state-specific or country-specific rules when analyzing enforceability. A non-compete analysis that doesn’t account for your governing law is worthless.
Not every tool does all of these. And the ones that claim to don’t all do them well.
The Contenders
Spellbook (by Rally Legal)
Spellbook was one of the first AI tools built specifically for legal work. It operates as a Microsoft Word add-in, which means you review contracts inside Word rather than in a separate application.
What it does well: Clause suggestion and drafting assistance. Spellbook shines when you’re writing contracts from scratch or negotiating back and forth — it suggests language, catches inconsistencies, and helps you draft faster. For transactional lawyers who live in Word, the integration is seamless.
Where it falls short: It’s primarily a drafting tool, not a review tool. If your primary need is “upload a contract, get a risk report,” Spellbook isn’t optimized for that workflow. You’re also tied to Word — if you receive contracts as PDFs (which, let’s be honest, you often do), there’s an extra step.
Pricing: Not publicly listed on their website. You need to request a demo. Based on publicly available information, plans start in the range of $100-300+/month depending on features and firm size.
Best for: Lawyers who draft and negotiate contracts daily in Microsoft Word and want AI assistance in their existing workflow.
LegalOn (formerly SpotDraft)
LegalOn positions itself as an AI-powered contract review platform with a strong focus on enterprise teams. It offers browser-based review, redlining, and playbook features.
What it does well: Comprehensive review with detailed clause analysis. LegalOn’s playbook system lets firms define their preferred positions on common clauses, and the AI flags deviations automatically. For firms with multiple associates reviewing contracts, this ensures consistency.
Where it falls short: Built for teams, priced for teams. Solo practitioners and very small firms may find the feature set more than they need and the pricing more than they want. The onboarding process is more involved — this isn’t a “sign up and upload” experience.
Pricing: Enterprise pricing, typically requiring a sales conversation. Reports suggest starting prices significantly above what solo practitioners would consider.
Best for: Mid-size law firms and legal teams that need to standardize contract review across multiple reviewers.
Robin AI
Robin AI takes a different approach — it positions itself as an “AI legal assistant” that handles contract review, negotiation suggestions, and even first-draft generation. They offer a freemium tier.
What it does well: Accessibility. Robin AI has a free tier (limited contracts per month) that lets you try before you buy. The interface is clean, the onboarding is simple, and the risk summaries are easy to understand. For lawyers who want to experiment with AI contract review without commitment, it’s a good starting point.
Where it falls short: Depth of analysis. Robin AI’s risk flagging is useful but can feel surface-level compared to tools that offer jurisdiction-specific analysis and market benchmarking. The free tier is limited enough that serious users will need to upgrade quickly.
Pricing: Free tier available with limited monthly contracts. Paid plans vary.
Best for: Lawyers who want to test AI contract review with minimal commitment and don’t need deep analytical features yet.
ContractPilot AI
ContractPilot is built specifically for solo practitioners and small firms. The value proposition is straightforward: upload a contract, get a structured risk report in 90 seconds, pay $49/month. No enterprise sales process, no six-month implementation, no features you’ll never use.
What it does well: Speed and depth of risk analysis. ContractPilot’s risk reports are structured clause-by-clause with individual risk scores, plain-English explanations, and specific remediation suggestions. Jurisdiction awareness is baked in — it analyzes enforceability based on the governing law specified in the contract. The “chat with your contract” feature lets you ask follow-up questions (“What’s my maximum liability exposure under this agreement?”) and get specific answers.
Benchmarking is another strength. When ContractPilot flags a clause as “unusually broad,” it’s comparing against patterns from thousands of similar contracts. You don’t just know there’s a risk — you know how far outside the norm it is.
Where it falls short: No Word add-in (yet). If your workflow is heavily Word-based, you’ll upload to ContractPilot separately rather than reviewing in-line. And because it’s newer to market, it doesn’t yet have the ecosystem integrations (Clio, practice management tools) that some established platforms offer.
Pricing: Transparent and public. Free tier: 3 contracts/month with basic risk summaries. Starter: $49/month for unlimited reviews, detailed risk reports, AI redlining, and chat-with-contract. Firm tier: $149/month with playbooks, multi-user access, and priority processing.
Best for: Solo lawyers and small firms who want powerful contract review without enterprise pricing or complexity.
ChatGPT / Claude / General AI
Some lawyers use general-purpose AI models directly for contract review. It’s free (or cheap), it’s flexible, and you already know how to use it.
What it does well: It’s available. You can paste a contract into ChatGPT right now and ask “what are the risks?” You’ll get a response that identifies the major clauses and provides basic analysis. For a quick gut check on simple agreements, it can be useful.
Where it falls short: Everything else. General AI models hallucinate — they state incorrect legal conclusions with high confidence. They have no jurisdiction awareness, no benchmarking capability, no structured risk scoring, and no way to compare a clause against market standards. They produce different results every time you ask the same question. And the output is a chat conversation, not a structured report you can share with a client or attach to a file.
The gap between “helpful summary” and “reliable legal analysis” is where malpractice risk lives.
Pricing: Free to ~$20/month for premium tiers.
Best for: Quick gut checks on low-stakes documents. Not for anything you’d rely on professionally.
How to Choose
The right tool depends on how you work:
If you live in Microsoft Word and primarily draft contracts: Spellbook is worth evaluating. The in-line experience is hard to beat for drafting workflows.
If you’re part of a larger firm that needs consistency across reviewers: LegalOn’s playbook system is designed for exactly this. Be prepared for enterprise pricing and onboarding.
If you want to experiment without commitment: Robin AI’s free tier and ContractPilot’s free tier (3 contracts/month) both let you test before you pay.
If you’re a solo practitioner or small firm and contract review is your primary need: ContractPilot gives you the most analytical depth at the most accessible price point. $49/month is less than a single billable hour, and the risk reports are detailed enough to drive real negotiations.
Related: Learn how to review a contract in 10 minutes using our proven framework, or read our real-world test of ChatGPT for NDA review.
If you just want a quick sanity check on something low-stakes: ChatGPT will give you a rough summary. But don’t rely on it for anything that matters.
The Question You Should Really Be Asking
The right question isn’t “which AI tool should I use?” It’s “what’s the cost of not using one?”
If you’re reviewing contracts manually, you’re spending 30-60 minutes per document on work that AI can do in 90 seconds. That’s not just inefficient — it’s expensive. Every hour you spend on contract review is an hour you’re not spending on client development, court preparation, or the work that actually grows your practice.
And if you’re not reviewing contracts carefully at all — if you’re skimming and signing because you don’t have time — then you’re carrying risk that will eventually cost more than any subscription.
The AI contract review market will look different a year from now. New tools will launch, existing tools will improve, prices will drop. But right now, in 2026, the tools are good enough to meaningfully reduce your risk and reclaim your time. The only losing move is waiting.
Try ContractPilot Free — 3 Contracts, No Credit Card →
ContractPilot AI provides AI-powered contract review for solo practitioners and small firms. Upload a contract, get a structured risk report in 90 seconds. Free tier available. $49/month for unlimited reviews.
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