MiMo-V3 is getting a new architecture. The core of it, HySparse2, is out today.
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MiMo-V3 is getting a new architecture. The core of it, HySparse2, is out today. Less prefill, a smaller KV cache, better long-context retrieval—and we got all three at once. Compared with MiMo-V2.6's Hybrid SWA architecture: • 5.02× lower prefill FLOPs at 1M tokens • 4.5× smaller KV cache at 1M tokens • Better MRCRv2 and RULER-v2 scores, plus lower AgentPPL and LongPPL Why build a new architecture? Agentic inference is a very different workload. Each round, a short action can return a long observation that needs to be prefilled, while the context keeps growing. That puts prefill cost, KV-ca
Posted by Fuli Luo (84.1k followers) 1 h ago · 1.3k likes · 47.7k views · view the original post on X. Kept by the AI Radar as AI research.
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