Topic: Open Source LLM

We have curated 18 representative technical articles from the Meituan technology team in 2025, covering major directions such as large model open-sourcing, R&D skills, and product services. This year, our LongCat team achieved significant milestones in the AI open-source ecosystem by releasing a comprehensive suite of models including LongCat-Flash-Chat, which utilizes a 560B parameter MoE architecture to optimize computational efficiency. We also introduced specialized tools like LongCat-Video for world model exploration and LongCat-Flash-Omni for real-time multi-modal interaction. These contributions solve industry pain points such as high inference latency and the difficulty of balancing performance with lightweight deployment. For the developer community, we provide these high-performance, low-threshold open-source resources to foster innovation and collective growth in the AI era.