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Apr 21, 2026 · Artificial Intelligence

OpenMythos: Rebuilding Claude Mythos with Recursive Transformers and MoE

OpenMythos is an open‑source PyTorch reimplementation of Anthropic's Claude Mythos that uses a mixed‑expert routed recurrent Transformer, introduces Recursive Depth Transformers, Multi‑Latent Attention, and several stability mechanisms, and demonstrates parameter‑efficient scaling backed by empirical studies.