Coding fonts used to be a personal-taste sideshow. Then Cursor, GitHub Copilot, Claude Code, Zed and v0 changed the job: you spend most of the day reading machine-written code: scanning diffs, eyeballing suggestions, deciding accept or reject. Your editor font went from decoration to instrument.
Two things matter now. First, the monospace you actually read code in. Second, the new part: using AI itself to pick and pair fonts for whatever you’re building, without it defaulting to Inter and Roboto every time.
Below: the monospace shortlist, a prompt you can steal, and the practices that keep AI honest about type.
Try it in Typedex
Search “JetBrains Mono”, “Geist Mono”, or a vibe like “mono”, “code”, “ligatures”.
Legible at small sizes, with a disambiguated 0/O and 1/l/I, built for reading diffs in Cursor, Copilot, Zed and VS Code.
JetBrains Mono is a typeface specifically designed for developers, featuring a modern monospaced design that enhances code readability. It includes a variety of ligatures and is optimized for use in IDEs and text editors. The font is known for its clear distinction between similar characters, making it ideal for programming.
Geist Mono is a modern monospaced typeface designed for coding and technical applications. It features a clean and geometric design, making it highly legible at various sizes. The typeface is known for its versatility and is often used in programming environments and digital interfaces.
Berkeley Mono is a monospaced typeface designed for clarity and readability in coding and technical documentation. It is known for its clean lines and balanced proportions, making it suitable for both programming environments and print. The typeface combines a modern aesthetic with traditional monospaced characteristics, providing versatility across various applications.
Explore IBM Plex Mono designed by Mike Abbink, Paul van der Laan, Pieter van Rosmalen at Adobe Fonts.
Space Mono is a fixed-width typeface designed for use in coding environments and digital interfaces. It features a modern, geometric style that is both functional and aesthetically pleasing, making it suitable for a variety of applications, particularly in tech and design. The font is known for its clear legibility and distinctive character shapes.
Explore Fira Code available at Adobe Fonts.
Source Code Pro is a monospaced typeface designed for coding environments. It was created as a companion to Source Sans and is known for its clear and legible characters, making it ideal for programming and technical documentation. The font features a modern aesthetic with a focus on readability at various sizes.
Martian Mono is a monospaced typeface that draws inspiration from the Martian Grotesk font. It is designed for code style applications, featuring a brutal and eye-catching aesthetic that enhances readability in programming environments. This font is known for its modern and geometric characteristics, making it suitable for both digital and print use.
Paste this into Cursor, Claude, ChatGPT, or any model. Fill in the bracketed bits. The constraints are what stop it from defaulting to the same three fonts.
You are a typographer helping me choose fonts for a software project. Context: - Product: <describe it, e.g. "a developer dashboard / SaaS app / marketing site"> - Vibe: <e.g. "modern, technical, trustworthy"> - Surfaces: <e.g. "app UI, long-form docs, code blocks"> - Constraints: free / open-source only (Google Fonts or OFL), fast to load, needs tabular numbers. Do this: 1. Recommend a type system: one display/heading font, one body/UI font, and one monospace font for code. 2. For each: exact family name, why it fits, the weights I actually need (not all of them), and a Google Fonts or @font-face source URL. 3. Give a ready-to-paste CSS snippet with :root font-family variables and sensible fallback stacks. 4. For the monospace, prioritize legibility: a clear 0/O and 1/l/I, and good operator ligatures for reading AI-generated diffs. 5. List 2 alternatives per role in case of licensing or availability issues. No preamble. Be concise.