LongCat-Flash-Chat is a large-scale Mixture-of-Experts (MoE) model with 560B total parameters, of which 18.6B–31.3B (≈27B on average) are dynamically activated per input. It introduces a shortcut-connected MoE design to reduce communication overhead and achieve high throughput while maintaining training stability through advanced scaling strategies such as hyperparameter transfer, deterministic computation, and multi-stage optimization. This release, LongCat-Flash-Chat, is a non-thinking foundation model optimized for conversational and agentic tasks. It supports long context windows up to 128K tokens and shows competitive performance across reasoning, coding, instruction following, and domain benchmarks, with particular strengths in tool use and complex multi-step interactions.
With CoreAI, you can start chatting with Meituan: LongCat Flash Chat instantly — no separate subscription needed. CoreAI bundles access to Meituan: LongCat Flash Chat along with 300+ other AI models from Meituan and other providers like OpenAI, Anthropic, Google, Meta, and more.
Chat with Meituan: LongCat Flash Chat and 300+ other AI models — all in one app.