Interim Chief AI Officers are uncommon, because few companies have had a permanent one to replace. The interim model exists mostly at larger companies running a fixed AI transformation program. For founder-led companies under $50M in revenue, fractional is the usual model and interim is the exception.
What an interim CAIO does
An interim CAIO works full-time for a defined period, usually six to twelve months, to deliver a program: standing up an AI governance board, selecting a platform for the whole company, running a set of pilots across departments and building an internal team to carry the work on. The role ends when the program is delivered or a permanent leader is hired. Pricing resembles any interim executive: roughly $20,000 to $40,000 a month, or a day rate of $1,500 to $3,000 for four or five days a week.
What a fractional CAIO does
A fractional CAIO works 1 to 4 days a month on an open-ended retainer. The work is steady and open-ended: keeping the AI policy current as tools change, adding use cases one or two at a time, judging vendors, training new staff and reporting results. Where providers publish fees, retainers run about $1,750 to $12,000 a month. The steady model suits AI in smaller companies because the tools change every few months, and a decision made once goes stale.
When each fits
Choose interim when the work is a time-bound program that needs a full week and an internal team to lead. Examples: a company with 500 employees rolling out one AI platform across every department, or a merger where two companies’ data and AI tools need to be combined. Choose fractional when the work is ongoing and the company has fewer than about 200 people. Most of the companies on this site fall in that second group.
The private equity case
PE firms increasingly ask portfolio companies for an AI value creation plan: where automation can lift margin over the hold period. Two models are common. A fund-level operating partner or a fractional CAIO serves several portfolio companies, each for a few days a month, using the same playbook. Or a larger portfolio company hires an interim to run a defined margin program over six to nine months. For a $10M to $50M portfolio company, the fractional model is usually the better value, because the work is a series of process changes, each of which needs time to settle.
The exit case
Buyers now ask about AI in diligence. They want to know which tools touch customer data, whether client contracts allow it, who owns code and content produced with AI tools, and whether reported savings are real. A fractional CAIO brought in 12 to 24 months before a sale can put a policy, a tool register and measured results on the record. An interim brought in during the sale can document what exists but cannot create a track record.
Moving between the two
Some fractional CAIOs will work more days during a heavy quarter, such as a platform migration. If you expect that, agree a day rate for extra time in the original contract.