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branding.md
  • Brand colors: #4724AB, #5832E2
  • fonts: Sans-serif Gerstner Programm: Geist or Space Grotesk, Monospace FT System Mono: Geist Mono or IBM Plex Mono
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eonist commented Feb 13, 2026 •
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are there any google fonts that looks a bit like these that I can use instead?

Here are some solid Google Fonts alternatives that match the vibe of both Gerstner Programm (the sans-serif) and FT System Mono (the monospace) used on parallel.ai.

Alternatives for Gerstner Programm (sans-serif)

Gerstner Programm is a clean, geometric sans-serif rooted in Swiss modernist design. These Google Fonts share that same precise, technical aesthetic:

  • Geist — Vercel's typeface, heavily inspired by Swiss typography (Univers, Suisse International). Available on Google Fonts, though with limited OpenType features compared to the npm version. Probably the closest match in spirit.12
  • Space Grotesk — A proportional sans-serif variant based on Space Mono, with a geometric/grotesk feel that pairs well with tech products.34
  • DM Sans — A low-contrast geometric sans-serif by Colophon Foundry with a clean, neutral look.5
  • IBM Plex Sans — A neutral grotesk sans-serif with excellent legibility, similar corporate-clean aesthetic.4
  • Outfit — A modern geometric sans-serif with clean lines and variable font support.6
  • Work Sans — Designed for professional/screen use with good legibility at small sizes.73

Alternatives for FT System Mono (monospace)

FT System Mono is a clean, technical monospace by Frost Type. These Google Fonts monos have a similar feel:

  • Geist Mono — Designed as a coding/UI mono with a clean, modern aesthetic. Very close to FT System Mono's character.28
  • Space Mono — A fixed-width family by Colophon Foundry with a geometric, slightly quirky character.9
  • JetBrains Mono — Optimized for code readability with maximized lowercase height and hundreds of ligatures.10
  • IBM Plex Mono — A clean grotesque mono that works well in UI and terminal contexts.10
  • DM Mono — The monospace sibling of DM Sans, minimal and geometric.11

Best pairing to replicate the parallel.ai look

If you want the closest match to that Gerstner Programm + FT System Mono combo, I'd go with:

Role parallel.ai Best Google Fonts match
Sans-serif Gerstner Programm Geist or Space Grotesk 24
Monospace FT System Mono Geist Mono or IBM Plex Mono 810

The Geist + Geist Mono combo is particularly fitting since they were designed as a matched pair and share the same Swiss/geometric DNA as the parallel.ai stack. If you're using Next.js (which parallel.ai does), they integrate natively via next/font/google.122
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Footnotes

  1. https://lexingtonthemes.com/blog/geist-opentype-features.html ↩

  2. https://github.com/vercel/geist-font ↩ ↩2 ↩3 ↩4

  3. https://www.jukeboxprint.com/blog/best-google-fonts ↩ ↩2

  4. https://baselinehq.com/blog/10-underrated-free-typefaces-google-fonts-webfonts-for-designers-sans-serifs.html ↩ ↩2 ↩3

  5. https://blog.prototypr.io/10-underrated-free-sans-serif-typefaces-on-google-fonts-84a2d55a1f62 ↩

  6. https://cssauthor.com/best-free-google-fonts-for-web-design/ ↩

  7. https://www.dreamhost.com/blog/best-google-fonts/ ↩

  8. https://fonts.google.com/specimen/Geist+Mono ↩ ↩2

  9. https://fonts.google.com/specimen/Space+Mono ↩

  10. https://wpshout.com/best-programming-fonts/ ↩ ↩2 ↩3

  11. https://hail2u.github.io/mn/ ↩

  12. https://vercel.com/font ↩

  13. https://moseydesign.com.au/resources/10-sans-serifs-youll-actually-want-to-use ↩

  14. https://european-alternatives.eu/alternative-to/google-fonts ↩

  15. https://undullify.com/24-best-free-google-fonts-visual-guide/ ↩

  16. https://maxibestof.one/typefaces/gerstner-programm ↩

  17. https://maxibestof.one/typefaces/ft-system-mono ↩

  18. https://www.youtube.com/watch?v=RDtqbvFUuQo ↩

  19. https://maxibestof.one/typefaces/courier-prime ↩

  20. https://ciderhouse.media/8-sans-serif-google-fonts-we-love/ ↩

  21. https://fonts.google.com/specimen/PT+Mono ↩

  22. https://www.whatfontis.com/NMY_Gerstner-Next.similar ↩

  23. https://www.webfx.com/blog/web-design/free-programming-fonts/ ↩

  24. https://uxdesign.cc/which-open-source-monospaced-font-is-best-for-coding-6bafd8d4b43c ↩

  25. https://mushaboom.studio/articles/best-sans-serif-google-fonts ↩

  26. https://jpolak.org/photo/monospaced-fonts-i-have-used/ ↩

  27. https://fontsource.org/fonts/geist-mono ↩

  28. https://tasarlab.com/en/10-frequently-preferred-google-fonts-and-their-features-in-design/ ↩

  29. https://www.reddit.com/r/vim/comments/1itjglg/is_anyone_else_very_picky_about_which_monospace/ ↩

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eonist commented Feb 13, 2026

Fonts Used on parallel.ai

The Parallel AI website uses two custom typefaces, both self-hosted as .woff2 files via Next.js font loading.

Sans-serif (primary): Gerstner Programm

The main body and heading font is Gerstner Programm, assigned to the CSS variable --font-sans.

  • Loaded in two weights: 400 (Regular) and 500 (Medium)
  • CSS variable chain: --font-sans → --font-gerstnerprogramm → "gerstnerProgramm", "gerstnerProgramm Fallback"
  • The fallback font is a metrics-adjusted local Arial (with custom ascent-override, descent-override, and size-adjust values to minimize layout shift)

Gerstner Programm is a geometric sans-serif typeface originally designed by Karl Gerstner in 1964 and later digitized/released commercially. It's known for its clean, modernist aesthetic — a popular choice for tech and design-forward brands.

Monospace (secondary): FT System Mono

The monospace/code font is FT System Mono, assigned to the CSS variable --font-mono.

  • Loaded in two weights: 400 (Regular) and 500 (Medium)
  • CSS variable chain: --font-mono → --font-ftsystemmono → "ftSystemMono", "ftSystemMono Fallback"
  • The fallback is also a metrics-adjusted local Arial
  • This font is used for code-like elements, benchmark data labels, and the "machine mode" styling (data-mode=machine)

FT System Mono is a monospaced typeface by the foundry Future Fonts / Frost Type, designed with a clean technical feel that pairs well with geometric sans-serifs.

Font Stack Summary

Role Font CSS Variable Weights Fallback
Sans-serif (primary) Gerstner Programm --font-sans 400, 500 Arial (metrics-adjusted)
Monospace FT System Mono --font-mono 400, 500 Arial (metrics-adjusted)

Technical Notes

  • Built with Next.js font optimization — fonts are preloaded via <link rel="preload"> tags in the HTML <head>
  • Four .woff2 font files are loaded total (2 weights × 2 typefaces)
  • The site applies the antialiased class globally for font smoothing
  • Tailwind CSS is used for utility classes with the font variables (font-sans, font-mono)

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