In January 2024 Publicis, one of the largest advertising groups in the world, announced a €300 million investment in an AI programme called CoreAI. Its rival WPP declared an annual investment of hundreds of millions of pounds in a similar direction. When the giants that run the world’s biggest advertising budgets rebuild their entire way of working around AI, it says something simple: the old operating model of digital agencies has stopped being competitive.
But what does that actually mean for a business looking for an agency? Almost every agency today writes “AI” somewhere on its site. This guide will help you tell apart the ones that genuinely work differently from the ones that added a buzzword to the homepage.
What an AI digital agency really is
An AI digital agency is not an agency that uses ChatGPT to write posts. It is an agency that rebuilt its working processes around three principles.
1. Data before opinions. Creative and budget decisions are made on the basis of continuous data analysis, not gut feeling. AI analyses campaign performance at a level of detail a human analyst never reaches.
2. A different production speed. What took a traditional agency two weeks — dozens of ad variations, landing pages, videos — is done in days. For the client that means more experiments, faster learning, and results that improve month over month.
3. Automation of the routine. Reports, campaign optimisation, lead tracking — all running automatically. The team’s hours go into strategy and creative, not into copying numbers into a spreadsheet.
Why this matters to you as a client
The economics of a traditional agency are built on billable hours, which gives it a built-in interest in things taking time. An agency built on AI inverts the equation: it profits from fast results, because its time is not consumed by grunt work. In practice this translates into three differences you will feel: shorter working cycles, more variations and tests at any budget, and full transparency in the data (because reports are generated automatically and there is nothing to hide).
There is a fourth difference, new for 2026: an agency that lives and breathes AI understands how to make you visible to the new search engines. Your customers are now asking ChatGPT and Perplexity “who is best at…” — and appearing in those answers (GEO) demands expertise a traditional agency simply does not have.
Seven questions to ask an agency before you sign
1. “Show me an example of a process you run end to end with AI.” A good answer involves an organised system, not “we use a chatbot”.
2. “How do you measure success?” Good answer: leads, cost per lead, return on investment. Weak answer: impressions and likes.
3. “What happens to my data?” Who owns the accounts, the audiences and the data? (The right answer: you do.)
4. “How many creative variations will I get per month?” An AI agency should be producing dozens, not three.
5. “How do you work on presence inside AI engines?” This is the test for real GEO expertise.
6. “Who is the team that will actually work on my account?” AI does not remove the importance of people; it amplifies them.
7. “What is the commitment and what are the exit terms?” An agency confident in its results will not tie you down for a year in advance.
What an AI digital agency costs
In the Israeli market, a monthly retainer for full digital marketing management runs between 5,000 and 30,000 shekels depending on scope (media budget not included). Focused projects — building automation infrastructure, standing up AI agents, strategy — run between 10,000 and 80,000 shekels. The important point holds in any market: do not compare price against price, compare output against output. An AI agency at a similar price should be delivering several times the deliverables and experiments.
The one red flag that gives everything away
Ask to see how they work on the inside. An agency genuinely built on AI will be glad to show you its systems, dashboards and automations — that is its source of pride. An agency that stammers at this point works like everyone else and simply markets itself differently. The rule is simple: whoever is selling you AI has to be able to demonstrate it on their own business.
Frequently asked questions
What is the difference between an AI digital agency and a regular digital agency?
The difference is in the process, not the tools: an AI agency has built its way of working around data, automation and fast production, which translates into more experiments, faster learning and better results on the same budget.
Is an AI agency more expensive?
Usually not — retainers are comparable. The difference is in output: more creative, more testing and transparent reporting at the same price. That is why you compare output, not price.
Does a small business need an AI agency?
A small business gains the most from it — a limited budget demands maximum efficiency, and an AI agency extracts more from every unit of spend. Alternatively, you can start with a focused project instead of a retainer.
What is GEO and why does it matter when choosing an agency?
GEO (Generative Engine Optimisation) is the work of building your presence inside the answers given by AI engines such as ChatGPT and Perplexity. A growing share of customers searches there — and an agency without GEO expertise leaves that arena to your competitors.