fmtlib/fmt tops GitHub Trending charts

{fmt} is unglamorous developer infrastructure at its best: narrowly focused, technically excellent, and durable enough to become foundational. This star surge signals renewed discovery and adoption—not a brand-new breakthrough.

• –The library combines Python-style formatting, compile-time format-string checks, Unicode support, and extensibility for user-defined types.
• –Version 12.2.0 added a type-safe C11 API, C++20 module support, faster floating-point formatting, and smaller debug binaries, but released on June 16, 2026. [Release notes](https://github.com/fmtlib/fmt/releases/tag/12.2.0)
• –Its benchmark profile remains compelling: the release notes report 22.07 ns for floating-point formatting versus 726.27 ns for sprintf and 864.34 ns for ostringstream.
• –Teams already targeting modern C++ may prefer std::format for fewer dependencies, while {fmt} remains attractive for portability, performance, and broader compiler support.
• –The project is AI-adjacent rather than AI-native, but it is useful foundational infrastructure for C++ inference engines, runtimes, and developer tools.