Media report · AI-ASSISTED BRIEF
Meituan LongCat Open-Sources LongCat-2.5, a 1.6T-Parameter Multimodal Model With Million-Token Context
Report publication · YYSI publication
According to IT Home, Meituan's LongCat team has open-sourced LongCat-2.5 under the MIT license, allowing commercial inference and further training without extra authorization. The natively multimodal model targets long-horizon agent tasks, has 1.6 trillion total parameters with about 48 billion activated per token, and supports a one-million-token context. It uses discrete visual tokens processed by the main model and a W4A4 INT4 inference scheme, with optimizations for domestic AI chips.
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