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# ChatGPT ads hit $1B run rate, but advertisers want proof before scaling up
- URL: https://fabric.media/chatgpt-ads-hit-1b-run-rate-but-advertisers-want-proof-before-scaling-up/
- Published: 2026-09-05T13:43:50.000Z
- Updated: 2026-09-05T13:43:50.000Z
- Description: OpenAI’s ad business reached a $1 billion annualized run rate, based solely on actual spend, not credits, but that trails its own $2.5 billion 2026 projection.
- Author: Fabric.Media Editorial
- Tags: Ad-tech, AI, Joanna Gerber, ChatGPT ads hit $1B run rate, advertiser demands

**Why it matters.** Advertisers say dollars stay in test budgets until OpenAI supports third-party incrementality and MMM tools, since Lifesight needs roughly six months of data to model cross-channel lift.

*Signal from* [*adexchanger.com*](https://adexchanger.com/?ref=fabric.media) *·* [*Joanna Gerber*](https://fabric.media/tag/by-joanna-gerber/) *·* [*read the original*](https://www.adexchanger.com/ai/chatgpt-ads-hit-a-1-billion-run-rate-heres-what-advertisers-say-will-get-them-to-spend-more/?ref=fabric.media)*.*