OpenAI API on new websites

1. OpenAI API appeared on about 930 new sites in the last 30 days.^[1]
2. Half of new OpenAI API sites also use Next.js.
3. It is unusually common on .ai domains: 8.5% of the domains running it, against 3.1% of domains across new sites.

The line is the 7-day average share of new sites that use OpenAI API, since 10 September.

#	Movement	Tool	Share of all sites	Share of category	Bar
1	▼1	Anthropic	0.1%	25.7%
2	–	Abacus.AI	0.1%	21.6%
3	▲1	OpenAI API	0.1%	20.1%
4	–	Google Gemini API	<0.1%	10.2%
5	–	One API	<0.1%	5.7%

All-time shares across the new sites we track: of all of them, and of the sites using any AI API tool. All 204 in AI API

Tool	Sites with both	vs all new sites	Bar
Google Analytics	1,243	3.8x
Google Tag Manager	1,407	3.7x
Next.js	1,551	3.5x
Vercel	1,262	3.0x
React	2,054	2.4x

Tools that turn up far more often on OpenAI API sites than on new sites in general, and how many times as common each one is there.

1,899 of the 3,209 sites using OpenAI API are product launches we list individually. The other 1,310 are new business and personal sites: they count towards the figures above but are not listed here. A watch sends them to you.

• Scopewise scopewise.app
• Coveron coveron.com
• Recroid recroid.com

Site	Found	Also detected
SMITCH Studio — မြန်မာ Content ကို AI နဲ့ smitchstudio.app · Content	Oct 19
Moody – Teleprompter for Mac (Notch) moodyteleprompter.com · Content	Oct 19
Heysell — AI-менеджер з продажу в переписці heysell.app	Oct 19
Jämför offerter från hantverkare – gratis | Brixy brixy.se · Sweden	Oct 19
AscensosApp Vortex - Transforma tu carrera profesional ascensosapp.com	Oct 19
PlanEvents | Plan events, discover services & find inspiration planevents.eu · Belgium	Oct 19
AutoLinx | CRM para concessionária e revenda de veículos autolinxcrm.com · Marketing · Brazil	Oct 19
4Fit CRM | CRM para academia e gestão de academia 4fitcrm.com · Marketing · Brazil	Oct 19
Doomhowl World Buff Schedule · Your Local Time doombuff.com · Games	Oct 19
Scopewise scopewise.app · Productivity	Oct 19
Coveron coveron.com · United States	Oct 19
Recroid recroid.com · Hiring & HR · India	Oct 19

Showing the most recent 12 of 1,899.

Watches, exports and the API give you all 3,209 sites using OpenAI API, from £15 a month.

1. These figures cover websites that went live since April 2026, not the web as a whole.
2. Country comes from what each site says about itself, such as a company registration, legal terms or a phone number, not just its domain ending. We count a country only where it is stated plainly enough to be sure: a governing-law clause or company registration number on a legal page, a phone country code, or a country domain ending. Sites that publish none are not counted at all.
3. Green hosting is the share whose web host The Green Web Foundation lists as running on green energy, among sites checked since 1 April 2026, against the same share for every new site we checked over that time. Data from The Green Web Foundation.