AI was supposed to help advertising teams get to the useful part faster. Instead, some agencies are receiving briefs that take longer to read, harder to interpret and more difficult to turn into a decision.
Digiday reports that agency leaders are seeing AI-generated briefs expand into hundreds of pages filled with familiar strategy language but little clarity about the marketing problem. Nadja Bellan-White, M&C Saatchi’s North American CEO, estimated that 85% of briefs sent to the agency by clients were written using AI tools. Her verdict was blunt: the industry is approaching “a tipping point.”
The problem is not that AI can produce a bad sentence. It is that a tool designed to accelerate thinking is being used to avoid thinking in the first place.
The brief is becoming a test of judgment
Brief writing has become one of the most common uses of generative AI in marketing. Digiday cites a Basis Technologies survey in which 56.4% of marketers and agencies said they use AI to build strategy, media or creative briefs. The use cases are easy to understand: AI can scan research, summarize brand guidelines, suggest audiences, compare media plans and produce a first version in seconds.
That speed creates a tempting shortcut. The brief appears finished before anyone has made the difficult choices that give it value.
Several agency executives told Digiday that the result is a document with no clear through-line. One described AI-generated writing as “pontificating on a sentence structure” until a brief becomes 10 pages long. Another said the technology was making already-disjointed briefs worse. The language gets more polished while the underlying decision remains unresolved.
This is where the familiar signs of AI writing become an operational problem. Repeated frameworks, inflated claims about commercial objectives and long paragraphs that avoid a precise instruction do not simply make a document annoying. They transfer the work downstream, forcing strategists, creatives and clients to reconstruct the original question before they can answer it.
Automation is moving the work, not removing it
The industry has spent years treating AI productivity as hours saved. But a faster first draft does not necessarily mean a faster process. If every generated claim needs checking, every recommendation needs qualification and every vague objective needs a human to translate it, the work has not disappeared. It has moved to the people responsible for making the final call.
That movement matters because a brief is not only a container for information. It is a record of judgment. It establishes what the team believes is true, what it is trying to change and what it is willing to ignore. A document can be comprehensive and still fail at all three.
The reported consequences are already practical. Digiday cites a GWI survey of 150 British marketers in which 29% said inaccurate or misleading AI-generated insights had cost their companies financially. It also describes staffers using AI to process consumer research, economic trends and brand material while managers worry that critical thinking is being outsourced along with the drafting.
That is why the suggested response from agency leaders is less technological than managerial. Christina Riccitelli of OpAD said managers should intervene when junior staff lean too heavily on AI. Bellan-White went further, recommending that people shut their laptops and phones and have an actual conversation about the brief.
The advice sounds almost aggressively offline because the missing capability is not another prompt. It is ownership. Teams need someone who understands the client, the market context and the trade-offs well enough to decide what matters before asking a machine to make the answer sound complete.
For agencies and marketers, the useful question is no longer whether AI was involved in producing a brief. It is whether a human being can explain the brief without opening the file. If the answer is no, AI has not streamlined the strategy process. It has hidden the absence of strategy inside a more impressive document.