OpenAI said on Wednesday it is expanding advertising on ChatGPT to 26 more countries, bringing the total to 89, as it builds the ads business ahead of a potential IPO. The company said in August that ads had reached an annualized revenue run rate of $1 billion, and that more than 100,000 advertisers have run campaigns since testing began in the US earlier this year.

The expansion adds 14 more Latin American countries, including Argentina, Chile, Colombia and Peru, following launches in Mexico and Brazil. Ads are also launching across Europe, the Middle East, Africa and Asia, including Nigeria, South Africa, Serbia, Ukraine, Cambodia, Bangladesh and Pakistan.

Ads appear only on ChatGPT's Free and Go plans; Plus, Pro and Enterprise subscriptions remain ad-free. Advertisers in the new markets can buy through technology partners or self-service via Ads Manager, and in September OpenAI added AI-powered advertiser tools and began testing business-sponsored agents with select US advertisers.