OpenAI has told the market it expects ChatGPT advertising to generate $100 billion a year by 2030. Emarketer, an independent research firm, forecasts that every standalone chatbot ad surface in the United States combined, ChatGPT included, will generate $5.41 billion in 2030. The two numbers cover the same five-year horizon, and one is roughly ten times the other.
Search Engine Land reported the comparison on July 14, drawing on Emarketer’s new chatbot ad forecast. The research firm’s estimate covers ChatGPT, Microsoft’s Copilot, Google’s AI Mode (Google’s conversational search experience), and Amazon’s Alexa for Shopping, the service formerly known as Rufus. That is the entire addressable category Emarketer sees forming by 2030, not OpenAI’s individual share of it.
The near-term numbers tell a similar story. OpenAI has projected $2.5 billion in ad revenue for this year alone. Emarketer estimates the whole US standalone chatbot ad market, across all four platforms, will not reach $1 billion in the same period. OpenAI is forecasting more revenue for itself this year than Emarketer expects the entire category to produce.
OpenAI opened ChatGPT to advertising tests in February and set the $100 billion five-year goal by April. Per the reporting on the forecast gap, OpenAI’s internal math assumes the company will pull spend away from established search advertising and help a still-forming chatbot ad category mature quickly. It also assumes ChatGPT ads will grow faster than any ad format has grown before. Emarketer’s model assumes something closer to the market’s current trajectory: a small, early surface expanding at an ordinary pace.
Neither number is a verified result. OpenAI’s $100 billion figure is a company forecast for its own future ad business, not an audited outcome. Emarketer’s $5.41 billion ceiling is also a projection, built on assumptions about how quickly chatbot usage and ad load will scale through 2030. Treating either as settled would be a mistake.
The distance between the two forecasts is still informative on its own. A market projected at roughly $5 billion across four major platforms cannot absorb ad budgets the way a $100 billion market could, regardless of which forecast proves closer to reality.
Search teams currently being told to shift spend toward chatbot ad placements should size any near-term test against Emarketer’s smaller number, not OpenAI’s. Treat a chatbot ad pilot as an early experiment on a developing surface, not as a replacement for a search budget line that will keep mattering for years.
This account is based on reporting by Search Engine Land, published July 14, 2026.
