Do you want a global firm with offices everywhere, or one person who does the work? For strategy at scale, the best AI consultants worldwide are IBM Consulting, Accenture and Deloitte; for builds, Quantiphi; for training, General Assembly. I'm Lilach Bullock, the one-person option, and since I made this list, my entry is the author's own.
The nine firms are IBM Consulting, Accenture, Deloitte, Miniml, Fractal Analytics, Quantiphi, Generation Digital, General Assembly and Omniscient Digital, and me. Each says on its own site that it works across more than one country. Facts here are as of Nov 2026, and the documentation behind each is the firm's own website; if a firm doesn't say where it's based, neither do I.
The useful surprise: worldwide means very different things from firm to firm. Accenture's company page says it serves clients in more than 120 countries but has offices in 52. Deloitte describes a network of member firms, so what you buy depends on the local firm. Miniml runs three offices as one team. Omniscient Digital says its team is spread across 10 countries. So the question isn't whether a firm is global. It's where the people doing your work really sit.
If you'd rather hire within one country, I keep separate lists for AI consultants in the UK, the US and Canada.
Four kinds of help, side by side
| Help you need | Who to ask | What to weigh |
|---|---|---|
| Strategy and a roadmap | IBM Consulting, Accenture, Deloitte, Miniml | Big programmes; small teams won't fit the scope |
| Build and automate | Fractal Analytics, Quantiphi, Generation Digital | Engineering-led; bring a clear use case |
| Train your people | General Assembly, Generation Digital | Teaches; doesn't run your systems |
| Get found in AI and search | Omniscient Digital, me | B2B-focused agency, or one practitioner |
Strategy and a roadmap
IBM Consulting. Its site describes a global professional services firm serving clients across 175+ countries, offering strategy, technology consulting, systems implementation and managed services, combined with IBM's own AI, data and hybrid cloud. Its AI consulting page lists AI strategy and governance, data services and agentic AI. It suits a large organisation spread across countries that wants strategy and delivery from one firm. Engagements are scoped for big programmes, not a quick advisory call.
Accenture. Its site describes AI services that help you scale AI across the business, and its capabilities menu puts AI and data next to strategy, cloud, cybersecurity, learning and talent. It's the pick when AI strategy is tied to cloud and operating-model change. A small business will find the engagement size mismatched.
Deloitte. Its global site says it works with leaders around the world in about 150 countries and territories. Its AI insights page says generative AI needs human input for purpose and trust, and its services menu lists AI and data alongside enterprise technology. It fits an organisation that wants AI roadmap work next to risk, finance and audit. Because it's a network of member firms, check which firm you'd be working with.
Miniml. Its site lists six capabilities, from AI strategy and roadmapping through workflow automation, custom agents, integrations and knowledge systems to team enablement. Its company page lists offices in Edinburgh, Milan and San Francisco, run as one team, and says it focuses on getting systems from pilot to production with governance. A good match for a company with a pilot stuck before production. It's enterprise-focused.
Build and automate
Fractal Analytics. Its site says it helps global organisations transform business functions through AI-led transformation and human-centred adoption, and its about page says it was founded in 2000. Its news mentions an India business unit for large enterprises. Engagement scale rules out most small teams.
Quantiphi. Its site lists conversational, document, generative and agentic AI applications, data and analytics and cloud modernisation, with partners including AWS and Azure. Its contact page lists offices in the United States, Canada and India. It's an engineering shop for a company that needs an AI application built and run on a major cloud, not a coaching partner.
Generation Digital. Its site describes an AI consultancy and certified Claude partner offering advisory, implementation, adoption, training and agent builds for enterprise clients, with delivery teams in London, New York and Toronto, and says it's a supplier on the UK government's G-Cloud. Its services page says it works across every major AI platform and is strongest on Claude. Pick it if you're in the UK or North America and want one firm for advice, build and training. It's Claude-led and enterprise-focused.
Miniml belongs here as well: custom agents and integrations are half its capability list.
Train and enable your people
General Assembly. Its site says its training arm teaches AI skills to teams and enterprises and describes workforces worldwide. Programmes run for 1 to 1,000+ employees, taught live in small cohorts by working AI practitioners, with tool-specific workshops, team cohorts, custom curriculum, an AI Academy and AI for Leaders. It teaches; it doesn't build or run your AI systems.
Generation Digital's services page also lists role-based training for leaders, teams and developers, which makes it the one firm here that covers building and teaching under one roof.
Want AI doing the heavy lifting in your marketing?
I build the systems that handle the boring 80 percent, so you get your week back. Done properly, with the human kept in.
Be found in AI and search
Omniscient Digital. Its site describes an organic growth agency that helps B2B brands get discovered and recommended across search engines and AI platforms, then turns that into pipeline. It lists answer engine optimisation, digital PR and organic search. It fits a B2B brand that wants an agency to run it, not a local or consumer business.
This is also the work I know best from the inside, because I've done it on my own site first. More on that below.
Where I sit: one person, not a global firm
I'm a British AI implementation consultant, AI trainer and fractional CMO with 23 years in marketing, and I went all in on AI in 2024. I work in English with clients worldwide, in person or online. I'm one person. I'm not a global firm, not a bench of engineers and not a research scientist: I don't train models or run research. What I do is train teams on their own tasks and help businesses get found in AI search. Owners can also have one-to-one coaching.
The proof is my own site. In January 2026 it had 1,322 Google clicks a month; by September it had 6,412. Visits sent by AI assistants went from 32 a month to 3,599 over the same months, according to my own Search Console and GA4. It's my business, not a client's, and it's not a promise.
Hiring across borders in four steps
- Name the help first: a roadmap, a build, trained people or visibility. Most firms are strong at one or two.
- Ask where your team will be. Which office, which time zone, which people.
- Check the scope fits your size. A firm built for enterprise programmes won't shrink well to a ten-person company.
- Ask for one piece of work like yours, in your sector, with what changed afterwards.
My verdict: I'd pick by the help you need, then by where the delivery team sits, and only then by the brand. I'd skip any firm that can't tell you which office and which people would do the work.
If you want your team trained on AI or your business found in AI search, and one person suits you better than a global firm, talk to me. I run AI training and workshops for teams, and help businesses with AI enablement and workflow automation, so the busywork runs itself and people get time back. Most of that work is with SaaS marketing teams and small businesses. Here's how we can work together.
Frequently asked questions
Who are the best AI consultants worldwide?
Full disclosure first: this list was written by me, Lilach Bullock, and I've listed myself alongside the firms. For strategy, IBM Consulting, Accenture and Deloitte; for building, Quantiphi and Fractal Analytics; for training, General Assembly; for AI search, Omniscient Digital. Which one is best comes down to the kind of help you need.
What does an AI consultant do?
They help you decide where AI fits, build or set up the tools, train people to use them, or some mix of the three. A good one tells you plainly which of those they do and which they don't.
Should I hire a global firm or a boutique AI consultant?
A global firm suits a large programme across countries, with governance and delivery under one contract. A boutique or solo consultant suits a smaller team that wants a named person and faster decisions.
How do I choose an AI consultant when my team is in several countries?
Ask where the delivery team sits and which time zones it covers, not just how many countries the firm lists. Then check that the people on the proposal are the people who'll do the work.
What's the difference between AI strategy, AI build and AI training?
Strategy decides what to do and in what order. Build makes the tools or automations. Training makes sure your people can use them. Many projects need all three, rarely from one firm.
Can an AI consultant help my business be found by AI assistants?
Yes, it's a growing specialism. Omniscient Digital lists answer engine optimisation for B2B brands, and I do this work for owners and marketing teams, starting with what I've proved on my own site.
