openai.com draws its headings and body text in OpenAI Sans. That is the only custom font on the page. We measured it on October 21, 2026.
The fonts openai.com draws
| Font | Used for | Share of its custom-font text | Licence | How common |
|---|---|---|---|---|
| OpenAI Sans | Headings, Body text | 100% | Company typeface, not verified as obtainable | – |
Share is how much of the page’s custom-font text each font draws. System fonts and icon fonts are never counted. Each site was opened twice in a real browser and Chrome was asked which font file drew each piece of text. We count a font for a site only if both runs saw it and it drew at least 2% of the site’s custom-font text. The full method.
Can I use the same fonts?
- OpenAI Sans: we could not verify that this typeface can be licensed, and it carries the name of the company that uses it, so we neither recommend it nor link a source.
openai.com among ai sites
openai.com is one of the 31 ai sites we measured. Across them, Inter is the most used font you can get, on 3 of the 31 (10%). All the fonts ai sites use.
What pairing does openai.com use?
openai.com uses one family, OpenAI Sans, for both headings and body text. So do 280 of the 407 sites we analyzed (69%). Pairings of two different fonts.
Other ai sites we measured
- anthropic.com Anthropic Sans Text, Anthropic Serif Text
- bolt.new Schibsted Grotesk
- character.ai Open Sans, At Hauss
- cursor.com Cursor Gothic, Berkeley Mono, EB Garamond
- deepmind.google Google Sans Flex
- descript.com Booton
See the fonts on all 407 sites.
FAQ
What font does openai.com use?
openai.com draws its headings and body text in OpenAI Sans. We measured it on October 21, 2026.
Is OpenAI Sans free?
We could not verify that OpenAI Sans can be licensed, so we do not state a licence. It carries the name of the company that uses it, which usually means a custom house font.
What font pairing does openai.com use?
One family, OpenAI Sans, for both headings and body text.
Can I use the same fonts as openai.com on my own site?
Only if the licence allows it. Free and open-source fonts can be used freely. Commercial fonts need your own licence, even though you can see the file on openai.com. Each font's licence is on this page, from its source.
How do you know which font openai.com uses?
We opened openai.com in a real browser and asked Chrome which font file drew each piece of text, twice in separate sessions. A font counts only if both runs saw it and it drew at least 2% of the site's custom-font text.
Can I check a different website?
Yes. Paste its address into the free font finder.