The quick brown fox jumps over the lazy dog
OpenAI Sans vs Inter
A bespoke corporate grotesque against the open-source default of product UI. OpenAI Sans was drawn in 2025 by OpenAI's in-house design team with Berlin foundry ABC Dinamo for the company's first rebrand, while Inter is Rasmus Andersson's 2017 neo-grotesque, built at Figma specifically for screens and now one of the most-served fonts on the web.
OpenAI Sans is a commercial font, so it is shown here in Inter, its closest free alternative. All free alternatives to OpenAI Sans →
The quick brown fox jumps over the lazy dog
- OpenAI Sans blends clean geometric lines with small, deliberate irregularities meant to soften the robotic precision of a pure geometric sans; Inter is a straighter, more rational neo-grotesque with no such quirks.
- Inter has a tall x-height, open apertures, and an optical size axis, so it holds up at small sizes and in dense data — the job it was designed for.
- Inter ships as a variable font from Thin (100) to Black (900) with true italics and a deep OpenType feature set, including alternate forms, tabular figures, and ligatures.
- OpenAI Sans is a proprietary, single-company typeface: it replaced the multiple fonts OpenAI used across its products, and it is not sold or licensed to the public at any price.
- Inter is free under the SIL Open Font License and runs on Figma, Notion, GitLab, Mozilla, and NASA, with ABC Dinamo still extending OpenAI Sans to global scripts and a mono version.
OpenAI Sans
Reach for OpenAI Sans only if you are OpenAI — it is a bespoke brand asset you cannot license, so its value to everyone else is as a reference for the look of a warmed-up, slightly imperfect grotesque.
Inter
Reach for Inter when you need that same clean, neutral screen voice in product UI, dashboards, and small text, with a free license and a decade of proven use behind it.