OpenAI began testing ads in ChatGPT in January 2026, initially limited to Free and Go tier users. What looked like a stopgap measure to sustain free access has become a $1 billion annualized revenue business. Today, the expansion is clear: the number of ad formats has grown, Free and Go users are saturated with sponsored content, and OpenAI itself is investing in AI-powered sponsored agents — an unprecedented format that lets users start a direct conversation with a brand-sponsored bot after clicking an ad.
The most recent announcement, published September 16 by OpenAI itself under the title "Reimagining Advertising with AI," detailed the introduction of Sponsored Agents: instead of being redirected to a sales page after clicking an ad in ChatGPT, users start a conversation with an AI agent funded by the sponsoring brand. The rationale is that, rather than a static banner, users receive a contextualized conversational experience. The company admits it is testing this functionality and that it "makes it easier to create ads by simply writing a few prompts in ChatGPT." In other words, the ad creation tool is integrated directly into the product where ads are displayed.
But the expansion doesn't stop there. CNBC reported in August that ChatGPT's advertising revenue had already reached $1 billion in annualized run rate, a figure OpenAI uses to justify its "diversified" business model. However, there is a growing tension between the company's need to monetize and the promises it made when first launching the feature. In January, when ads were first announced, OpenAI stated that "ads don't influence the answers ChatGPT gives you" and that "we keep your conversations private." A few months later, the company updated its privacy policy on February 9, 2026 to formalize exactly what data is shared with advertisers and what controls users have.
The problem is that the continuous expansion of ad formats — from classic banners to Sponsored Agents, from mobile to desktop — fundamentally alters the product's experience. ChatGPT, once marketed as a clean, distraction-free AI tool, is gradually transforming into an advertising platform. For Free and Go users, this means an increasingly cluttered interface filled with sponsored prompts, brand agent recommendations, and ad cards interspersed among responses. For ChatGPT Plus or Pro subscribers, the situation is different: ads don't appear directly in their paid tier, but the value of their subscription diminishes as the core functionality — conversational AI — is progressively replaced by sponsored experiences.
OpenAI's business model is shifting rapidly. In 2025, the company generated $11.2 billion in revenue. Projections for 2026 point to roughly $20 billion, with advertising revenue representing an ever-larger share. The company has already expanded ads to over 40 countries and aims to reach $2.5 billion from advertising alone this year. To achieve that number, it isn't enough to place more banners — new formats, increased user engagement, and inevitably a more intrusive presence in the product are required.
What makes Sponsored Agents particularly interesting from a business perspective is that they create a near-perfect feedback loop: the user interacts with the brand agent, the brand obtains conversation data, OpenAI sells more ad space, and simultaneously the ad creation tool improves with the data generated. It's ultimately a business model that transforms ChatGPT from a public utility product into an AI-powered marketing platform. And the question is whether the cost of exhaustive monetization will outweigh the brand value OpenAI built by positioning itself for years as the antidote to invasive internet advertising.
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