Practical AI Institute vs a Big Four Consulting Firm
This comparison is not about quality. Big Four firms are excellent at a job that most $10M-$50M companies are not buying.
The short answer
A Big Four engagement is built for global delivery, regulatory sign-off, and programmes spanning many business units. Rates run $400 to $800 per hour, and the analytical work of finding where AI pays in a single mid-sized operation is a small fraction of what you are paying for.
If you need board-level governance across a multi-entity group, hire the Big Four. If you need to know which of your workflows is expensive to run manually, that is a short focused engagement and the overhead is not doing any work for you.
Side by side
| Dimension | Practical AI Institute | Big Four firm |
|---|---|---|
| Hourly equivalent | $1,999 diagnostic, then about $10,000/month | $400-$800/hour |
| Designed for | A single company doing $10M-$50M | Global multi-entity programmes |
| Typical timeline to first result | 90 days | Months to years |
| Who does the work | The senior practitioner who scoped it | A delivery team assembled after scoping |
| Core output | A costed workflow ranking and one instrumented automation | Governance, assurance, and programme design |
| Best when | You do not yet know where AI pays | You need regulated sign-off at board level |
When a Big Four firm is the right call
You operate across multiple jurisdictions and need a single accountable programme. You need audit-adjacent independence and formal governance artefacts. You are in a regulated industry where the sign-off itself is the deliverable. You have an internal AI function that needs external validation at board level.
When it is the wrong call
You are a single-entity company doing $10M to $50M and you do not yet know which workflows to automate. In that situation you are buying research you could commission for a fraction of the fee, and the multi-year timeline delays the only thing that matters, which is finding out whether the investment pays.
A reasonable sequence for a mid-sized company: commission the diagnostic at under $2,500, establish the costed ranking, then decide whether the resulting programme is large enough to justify a Big Four engagement. Many companies find it is not.
Frequently Asked Questions
- Is a Big Four firm worth it for a mid-sized company?
- Usually not for the first engagement. Big Four rates run $400 to $800 per hour and the fee covers global delivery teams and governance built for regulated enterprises. A company doing $10M to $50M should establish a costed ranking of automatable workflows first, then decide whether the resulting programme justifies that overhead.
- How much do Big Four firms charge for AI consulting?
- Rates run $400 to $800 per hour, with hourly work commonly quoted from $150 to over $1,000 across the market depending on firm tier. Mid-level strategy firms run $500 to $1,000 or more per hour. Fixed-fee readiness assessments run $10,000 to $25,000 across the market, rising to $25,000 to $75,000 for enterprise audits.
- What is the cheapest way to start with AI consulting?
- A diagnostic priced low enough that declining everything after it is easy, which in practice means under $2,500. Its output is a costed ranking of your manual workflows. Once you know your own number, you can judge whether any larger engagement is worth its fee.