AI Consultant vs. Management Consultant
Specialty AI Consultancy
Builds working AI systems, hands off code, narrower scope.
Management Consulting (McKinsey / Bain / Deloitte AI practice)
Strategy frameworks, executive enablement, broader org transformation.
Specialty AI Consultancy wins.
For SMB and mid-market companies (under $500M revenue) the specialty AI consultancy wins. Big-firm AI practices are built around enterprise economics: longer engagements, higher fees, board-level work, less hands-on shipping. They're the right call for $5M-and-up transformation initiatives at $1B+ companies. For everyone else, you'll pay $400-700/hr for a Big 4 senior to write a deck a specialty consultancy would ship as working code.
Side by side, dimension by dimension
Typical engagement size
A winsBig firms don't get out of bed for under half a million. Math doesn't work for SMB.
Time to first shipped system
A winsBig-firm engagements often end at 'roadmap and recommendations'. The build is a follow-on or your problem.
Senior practitioner availability
A winsYou meet the partner during sales. After signing, you mostly see 2nd-year analysts.
Hands-on building
A winsIf you need someone to ship a system, specialty wins. If you need an organizational transformation deck, Big 4 wins.
Brand value to your board
B winsWhen the board wants 'we hired McKinsey', specialty AI consulting won't satisfy. Sometimes that matters.
Industry-specific depth
TieTie. Specialty consultancies usually have specific niches. Big firms have coverage but variable depth.
Tooling / vendor independence
A winsBig firms have legitimate partnerships. Specialty AI consultants are usually vendor-neutral. Check disclosures.
Knowledge transfer to internal team
A winsBoth can do training. Big-firm training tends to be theory-heavy; specialty consultancies train on the actual system they built.
Total cost over 24 months
A winsOrder of magnitude difference. The Big-4 premium is real and visible.
Best fit
A winsThe cutoff is roughly $500M revenue or board-level AI mandate. Below either, specialty wins. Above both, Big-4 makes sense.
You have a specific AI initiative, $30k-$300k budget, and you need working systems shipped in months not years.
You're $1B+ revenue, the board wants a multi-year transformation roadmap, and brand-name CYA matters.
Want an honest second opinion on a Big-4 proposal?
If you have a McKinsey, Bain, Deloitte, or Accenture proposal in front of you and want a specialty perspective on scope and pricing, book a 30-minute call. No pitch, just calibration.
On this comparison specifically
Can't I get a McKinsey alum to consult independently?
Yes, and many do. Ex-McKinsey solo consultants typically charge $300-500/hr, deliver strategy work without the firm overhead, and many are excellent. The trade-off: they usually still don't build, so you'll need a separate build partner. Best used as the strategist paired with a specialty AI consultancy doing the build.
What about boutique consultancies (the 20-50 person AI shops)?
Boutiques sit between specialty solo consultancies and Big 4. They have more bench depth than a solo operator, more shipping speed than Big 4, and pricing roughly in between. Right call when you need a real team for 4 to 8 months. Wrong call for small projects (under $40k) where their economics force them to staff junior.
How do I evaluate a specialty AI consultancy?
Three questions. (1) Show me a handoff doc from your last engagement (this filters 80% of resellers and re-packagers). (2) Walk me through a project that did NOT meet expectations and what you changed (filters the rest). (3) Who specifically would be on my engagement (not 'our senior team', actual humans). If they dodge any of these, pass.
Do Big-4 firms still subcontract to specialty shops?
Often, yes. The Big-4 brand sells the engagement, then they subcontract the build to specialty shops for 40-60% of the bill rate. If you can identify the specialty shop they subcontract to, you can hire them directly and save the overhead. The Big-4 partner doesn't love that line of questioning.