Short answer
There are five main types of AI consulting firms: strategy and management consultancies, Big 4 advisory firms, AI development shops, AI builders, and training firms. They differ in what you hold at the end. That might be a roadmap, a risk framework, software built to your spec, working software plus a trained team, or new team skills. Lattice Partners is an AI implementation partner based in Los Angeles and New York that helps companies build an AI strategy, trains their teams on AI tools, and builds custom agents and software.
- Choose by the deliverable you need, not by the size of the firm.
- Many projects need two types in sequence, such as a roadmap first and a build second.
- Ask every firm what it has shipped. The answer sorts the types quickly.
What are the main types of AI consulting firms?
The five main types are strategy consultancies, Big 4 advisory firms, AI development shops, AI builders, and training firms. The table shows what each one usually delivers and where each one tends to fall short.
| Type | What you get | Typical deliverable | Fits when | Watch for |
|---|---|---|---|---|
| Strategy and management consultancy | Market view, ranked use cases, business case | Report, roadmap, slide deck | Leadership needs agreement on where to invest | The plan can end before anything is built |
| Big 4 advisory firm | AI advice, risk and governance work, large-program support | Assessments, control frameworks, program management | A large or regulated company needs formal controls | Team size and process can be heavy for a smaller company |
| AI development shop | Software built to a written spec | Working code for a defined requirement | You already know exactly what to build | A wrong spec gets built exactly as written |
| AI builder (implementation partner) | Strategy, training, and software from one team | Deployed tools and a trained team | A mid-market company wants results without hiring an AI team | Confirm the firm has shipped real products |
| Training firm | Employees who use AI tools well | Workshops, playbooks, prompt libraries | The team has tools but few people use them | Usage can fade if workflows don't change |
The Big 4 are Deloitte, PwC, EY, and KPMG. Each sells AI advisory and risk services next to its audit and tax work.
Which type of AI consulting firm fits which problem?
Match the firm to the problem you have today. A company that doesn't know where AI fits needs a different partner than one that knows exactly what to build.
| Your situation | Start with |
|---|---|
| Leadership disagrees on priorities | A strategy consultancy |
| You need formal AI governance and controls | A Big 4 advisory firm |
| You have a detailed spec and an internal owner | An AI development shop |
| You have workflows to fix and no AI team | An AI builder |
| You bought AI tools and few people use them | A training firm |
Most mid-market companies sit in the fourth row. They have specific workflows to fix and no data science team. What Is an AI Builder? explains that type in more detail.
How can you tell which type a firm is?
Ask what the firm has shipped, who writes the code, who trains your people, and what you own at the end. The answers show the type faster than the website does.
- "What have you deployed?" A builder names the systems and the problems it hit. A strategy firm points to decks.
- "Who writes the code?" A development shop or builder gives you names. A strategy firm often hands that work to someone else.
- "Who trains our team?" A builder or training firm answers directly. Others treat training as an add-on.
- "What do we own at the end?" Get this in writing. Ownership of code differs widely between firms.
How to Tell If an AI Consulting Firm Ships Software has a longer checklist. How to Choose an AI Consulting Firm lists ten questions to ask on the first call.
Do you need more than one type of AI consulting firm?
Sometimes. A common sequence is a roadmap from a strategy firm followed by a build from a builder or development shop. The risk is the handoff, because the builder has to relearn the context the strategists collected.
You can reduce that risk by asking the strategy firm to name the first use case and its data sources in the roadmap. From AI Strategy to Production shows what a clean handoff looks like. Many pilots also stall between the plan and the build, which Why AI Pilots Stall covers.
How Lattice Partners does this
Lattice Partners is an AI builder, which we also call an AI implementation partner. We work with mid-market companies, often founder-led, in private equity and finance and manufacturing. The same team runs discovery, trains your people, and builds the software.
Engagements run in four phases: Learn, Tailor, Build and Ship, and Iterate. When the project is well scoped, the first version usually ships within a few weeks. If AI isn't the right answer for a workflow, we say so.
Custom software is a one-time build and the client owns the code. We don't charge a recurring per-seat or per-module license.
Frequently asked questions
What is the difference between an AI consultant and an AI builder?
An AI consultant advises on strategy and usually delivers a plan. An AI builder designs and ships working software, and often trains the team that uses it. Some firms do both, so ask what they have deployed.
Which type of AI consulting firm is best for a mid-market company?
Most mid-market companies do best with an AI builder or an implementation partner. They usually have specific workflows to fix and no in-house AI team. A strategy-only engagement can leave them with a plan and nobody to build it.
Are the Big 4 the right choice for AI consulting?
They fit large or regulated companies that need formal governance, controls, and program management. A smaller company may find the scale and process heavier than it needs.
Can one firm provide strategy, training, and software?
Yes. Implementation partners and AI builders do all three. The benefit is that discovery, training, and the build use the same context, so less is lost between steps.
How do I compare AI consulting firms?
Compare what each firm has shipped, who does the work, who trains your team, and what you own at the end. Those four answers separate the types more reliably than size or brand.
Related reading
About Lattice Partners
Lattice Partners is an AI implementation partner based in Los Angeles and New York. We help companies build an AI strategy, train their employees on AI tools like ChatGPT and Claude, and build custom AI agents and software. Clients own the code we build. Lattice Partners was founded by Colin McDonnell, Martin Anquetil, and Christian Yeghnazar. Contact us to talk about your use case.