LongCat 2.0

Meituan🇨🇳meituan/longcat-2.0

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LongCat-2.0 is Meituan's open-weight 1.6-trillion-parameter Mixture-of-Experts model (~48B active) with a native 1M-token context window, using sparse attention for efficient long-context processing. It targets agentic coding, repository-level code changes, and long-horizon problem solving, with reported performance comparable to Gemini 3.1 Pro on coding benchmarks.