OpenArch PyTorch implementations of diverse LLM architectures
September 14, 2026
OpenArch provides hand-written PyTorch implementations of modern LLM architectures in single-file formats. It explicitly details structural variations such as GQA vs MQA attention, RMSNorm, and various RoPE positional encoding methods to facilitate architectural comparison.
HOW THIS AFFECTS YOU
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builderThese files provide a transparent way to inspect and integrate specific structural choices into your custom models.
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researcherYou can use these clean implementations to quickly prototype or verify new architectural components.