Publishers have spent decades selling advertising to influence human readers. Now a new advertising market is emerging for a different audience — the machines increasingly deciding which information humans see.
WHAT’S HAPPENING
Time has begun selling advertising designed specifically to be read by AI agents rather than human visitors.
Time creates simplified Markdown versions of its webpages that are easier for AI systems to process. Working with ad-tech company Mobian, it is inserting sponsored, FAQ-style brand content into those machine-readable pages. Early advertisers have included Ally Bank and the Project Management Institute.
The ads are labeled as sponsored content in the Markdown, but they are not part of the normal webpage a human reader typically sees.
That means part of the internet is beginning to develop one presentation for people and another for machines.
WHY IT MATTERS
Digital advertising has traditionally been built around getting a person’s attention.
This model is different.
The advertiser is trying to place information where an AI system encounters it while gathering information, potentially making the machine—not the human—the first audience for the advertisement.
There is no solid evidence yet that buying these placements reliably changes what ChatGPT, Gemini, Perplexity or other AI systems ultimately tell users.
But the commercial incentive is obvious.
If people increasingly ask AI systems for recommendations, explanations and product information instead of visiting webpages directly, advertisers will want access to the information those machines encounter before generating their answers.
WHO BENEFITS
Publishers could gain a new way to monetize growing AI-bot traffic at a time when traditional search referrals are under pressure.
Advertisers gain another potential route into AI-driven discovery.
And an entirely new advertising industry could emerge around measuring whether AI systems see, process and eventually surface sponsored information.
The problem is that measurement remains immature. The advertising industry is still trying to determine how to prove that an ad shown to an AI agent actually influenced anything downstream.
WHO LOSES
AI companies may resist allowing publishers or advertisers to influence their information pipelines from outside their own platforms.
Perplexity already has.
After Time’s experiment became public, Perplexity said it blocked the Markdown advertising from influencing its search index and characterized the practice as deceptive. It also warned that publishers using similar techniques could face reductions in their trust scores.
Users also face a transparency problem.
Sponsored material can be labeled when the AI retrieves it, but that label could disappear between the original source and the final AI-generated answer unless systems are specifically designed to preserve the distinction.
WHAT HAPPENS NEXT
The fight will be over who controls advertising inside the AI information chain.
Publishers have an incentive to monetize what AI crawlers consume.
Advertisers want their information available when machines are deciding what to retrieve.
AI companies have an incentive to prevent outside parties from quietly shaping their answers — and potentially to control AI advertising themselves.
Time’s experiment is still early, and Perplexity’s response shows there is no accepted rulebook yet.
But something important has already changed:
The web no longer has only human readers worth advertising to. Machines are becoming an audience too.
