There’s a good chance the legal AI tool you’re paying a premium for is running on the same underlying model as ChatGPT, Claude, or Gemini. That might sound like a gotcha, but I promise you it isn’t. It’s simply how the legal AI industry is built and once you understand it, you’re in a much better position to evaluate what these tools actually offer, and where the real value lies.
The Engine Under the Hood
The vast majority of legal AI products are built on foundation models from a small handful of providers: OpenAI, Anthropic, and Google. These companies build and train the core AI, and legal tech vendors access it through commercial APIs, essentially sending your queries to the provider’s servers and returning a response wrapped in a custom interface.
Think of it like the automotive industry. Multiple car brands can use the same engine manufacturer while offering very different driving experiences. Legal tech companies build the dashboard, workflows, and user experience, but the “brain” doing the reasoning is often the same one available to anyone with a ChatGPT or Claude subscription.
This isn’t a flaw. But it does raise an important question: if the underlying model is largely the same, what should you actually be evaluating?
Not All Legal Work Is Created Equal
Not all legal work carries the same complexity or risk. In fact, a significant portion of what passes through a legal team’s inbox on any given day doesn’t require a lawyer’s expertise at all. This is work that consumes time and creates bottlenecks, but doesn’t demand specialist judgment, such as routine contract requests, standard NDAs, internal policy questions, intake forms, and repetitive FAQ-style queries.
This is where the concept of a Legal Front Door becomes relevant. An AI-powered intake layer can handle this category of request automatically by routing queries, answering common questions, generating standard documents, and triaging what genuinely needs a lawyer’s attention. That way, legal teams spend less time on admin overhead and more time on the work that actually requires their expertise.
For this type of work, the underlying AI model matters relatively little. What matters far more is how well the tool integrates into your existing workflows and whether it’s designed to handle legal intake intelligently.
Where Legal Tech Vendors Actually Add Value
So if the model is largely commoditized, where do legal tech products genuinely differentiate? Three areas stand out:
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Workflow integration
Does the tool fit into how your team actually operates? Can it connect to your existing systems, handle your document types, and slot into your intake and approval processes without creating new friction?
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Security infrastructure
Where does your data go when you submit a query? Is it stored? Who can access it? For legal teams handling sensitive matters, this is a threshold requirement.
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Retrieval systems
When a lawyer uploads a set of contracts and asks a question, how does the system find the right answer? This is where the most meaningful technical differentiation lives, and it’s worth understanding in a little more detail.
Why Retrieval Is the Real Differentiator
Imagine you asked a friend to answer a question about a 500-page textbook. A bad friend might just guess. A decent friend would flick through and find the most relevant pages before answering. A great friend would read those pages, realize they need more context, go find another chapter, and keep digging until they had a complete answer.
Legal AI retrieval works the same way.
When you ask a legal AI tool a question about a document, it doesn’t read the whole thing from start to finish. Instead, it scans for the most relevant sections and only uses those to form an answer. This stops the AI from getting overwhelmed and makes it far less likely to hallucinate and make things up.
Basic tools do this scan once and run with whatever they find. But smarter ones trained specifically on legal language actually understand that two phrases can mean the same thing. So when you ask about “indemnification,” it knows to also look for “hold harmless,” because in law, they’re the same concept.
The smartest tools go even further. If the first search doesn’t fully answer the question, they go back and search again, and keep going until they’re satisfied they’ve found everything relevant. This approach is what separates a tool that gives you a confident-sounding wrong answer from one that gives you a genuinely useful right one.
So, the takeaway here is that the quality of what gets fed to the model matters just as much as the model itself.
The Right Questions to Ask
When evaluating legal AI tools, the question “which AI model does it use?” is less useful than it might seem. More revealing questions include:
- Does it handle routine requests automatically? Can it reduce the admin burden on your legal team before complex work even enters the picture?
- How does it retrieve information from my documents? Is it using basic retrieval, or something more sophisticated?
- What does human oversight look like? Is the tool designed to support lawyer judgment, or to bypass it?
These questions get closer to what actually determines whether a tool will deliver value in practice.
Key Takeaways
Most vendors in the legal AI industry are building on the same foundation, meaning everyone has access to the same ingredients. The real differentiators are what’s built around it.
How does the tool handle routine requests before they reach your lawyers? How does it retrieve and structure information from your documents? How does it manage context when the work gets complex? These are the questions that separate a well-architected legal AI product from a polished interface wrapped around a commodity model.
For legal teams evaluating tools, this is actually good news. It means you can cut through the hype and focus your evaluation on the things that genuinely determine outcomes, namely workflows, retrieval quality, and context management.
If you’re in the middle of that evaluation right now, we’d love to show you how Checkbox approaches each of these. Book a demo today to see what’s actually under the hood.
