Tachyon JSON v6: The World's Fastest JSON Library. 5.5 GB/s throughput via AVX2 ASM kernels & Lazy Indexing. C++20 header-only, nlohmann-like syntax, 160x faster than standard DOM parsers.
fast lightweight json cross-platform cpp json-api modern-cpp json-parser header-only data-serialization json-library json-serializer single-header cpp20 tachyon-json
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Updated
Jan 8, 2026 - C++