The short answer
An AI consultant gives advice on a defined question and then leaves. A fractional Chief AI Officer joins your leadership team for a few days a month and owns AI: the priorities, the risk, the suppliers and the return.
If you have one question, hire a consultant. If nobody on your leadership team owns AI, you need an owner, not more advice.
Side by side
| AI consultant | AI agency | Fractional Chief AI Officer | Full-time Chief AI Officer | |
|---|---|---|---|---|
| What you buy | Advice on a defined question | Something built | A senior owner for AI, part time | A senior owner for AI, full time |
| Who owns the result | You do | You do, once it is handed over | They do, at board level | They do, at board level |
| How long | Weeks | Per project | Months, a few days each month | Permanent |
| How you pay | Per project or by the day | Per project | Monthly retainer | Salary and benefits |
| Best when | You have one question to answer | You know what to build | AI matters to your board, but is not yet a full-time job | AI is core to the business and needs its own team |
When an AI consultant fits
- You have one defined question, such as which tool to choose or whether a process is worth automating.
- Someone on your leadership team already owns AI and needs a second opinion.
- You want an independent review of a supplier, a contract or a plan.
When an AI agency fits
- You already know what to build, and the business case is agreed.
- You have someone senior to own it once it is live.
When a fractional Chief AI Officer fits
- You are spending on AI licences and pilots, but cannot show the return.
- Your investors or board want an AI plan, and nobody owns it.
- Staff are putting client data into AI tools and there are no rules.
- Everyone is selling you AI and you don't know who to trust.
- You want one senior person at the table, not another vendor.
When to hire full time
Hire a full-time Chief AI Officer when AI is core to what you sell or how you run, and there is enough work for a full-time executive with their own team. Many businesses use a fractional Chief AI Officer until they reach that point.
For the numbers, read what a fractional Chief AI Officer costs in the UK.
Five questions to ask before you hire
- Who owns the result when you leave? If the answer is you, you are buying advice.
- Have you built AI products, or only advised on them? Ask to see what they built.
- How will you report the return to our board? Look for a business case and a number for each project.
- Are you tied to a vendor? Tools should be chosen last, once the problem and the return are clear.
- What happens in the first 90 days? A good answer names priorities, rules and a first result.
Where I fit
I work as a fractional Chief AI Officer for two to four days a month, and my team builds what we plan. If you only have one question, you may not need a retainer. Start with a Boardroom AI Briefing or an AI Strategy Sprint.
Questions
What is the difference between a fractional Chief AI Officer and an AI consultant?
A consultant gives advice on a defined question. A fractional Chief AI Officer owns AI on your leadership team month after month: the priorities, the risk, the suppliers and the return.
Is a fractional Chief AI Officer more expensive than a consultant?
Not necessarily. Both are usually priced by the day. The difference is the commitment: a consultant is paid per project, and a fractional Chief AI Officer is on a monthly retainer.
Can a fractional Chief AI Officer also build?
Some can. I have a build team, so the plan becomes something that works, not a report.
When should we hire a full-time Chief AI Officer?
When AI is core to the business and there is enough work for a full-time executive with their own team.
Do we need a Chief AI Officer if we already have a CTO or CIO?
Often, yes, for a period. A CTO or CIO runs technology. A Chief AI Officer owns where AI changes cost, risk and revenue across the business, and works alongside them.
This guide is general information. The right choice depends on your business, your team and how much AI matters to your numbers.