Short answer
EMARKETER forecasts US AI ad spending of $32.03 billion in 2026, rising to $68.25 billion by 2030. More than 80% of 2026 spend sits next to AI content in search, such as ads beside Google AI Overviews. Ads inside standalone LLM chatbots like ChatGPT, Copilot and Gemini are the smallest category: under $1 billion in 2026, just over $5 billion by 2030.
What counts as AI advertising
| Category | What it is | Examples |
|---|---|---|
| AI search-adjacent | Search ads shown alongside AI-generated summaries | Ads beside Google AI Overviews |
| AI conversational search | Ads inside search-based chat experiences | Google AI Mode |
| AI chatbot (LLM ads) | Ads inside standalone LLM assistants | ChatGPT, Microsoft Copilot, Gemini |
The forecast excludes traditional search ads on results pages with no AI-generated content.
The numbers
| 2026 | 2030 | |
|---|---|---|
| US AI ad spend, all categories | $32.03 billion | $68.25 billion |
| AI chatbot ads (LLM ads) | under $1 billion | just over $5 billion |
What it means for B2B
- Most AI ad money still flows through Google, which you already buy through existing campaigns
- Chatbot ads are small but growing fast, so early B2B advertisers face fewer competitors in their topics
- Organic visibility in AI answers (AEO and GEO) matters as much as paid placements, because most of what buyers read in an AI answer is unpaid
Questions
Is ChatGPT advertising worth it if the market is still small?
For B2B, a smaller market can mean less competition for niche buyer topics. Test with a defined budget and judge it on identified companies and pipeline.
Does this forecast cover Europe?
No. These figures are for the United States only.
Facts checked against the sources below on 13 October 2026. Platforms change quickly: if something here no longer matches what you see, tell us and we will update it.
