What is LongCat-Flash?
LongCat-Flash is a powerful, open-source large language model developed by Meituan, designed to excel in complex agentic tasks and provide highly efficient, real-time AI capabilities. It addresses the growing need for intelligent systems that can perform sophisticated actions and integrate seamlessly into diverse applications, offering a competitive edge in performance and cost-effectiveness.
Key Features
Innovative MoE Architecture 🧠: Leveraging a 560-billion-parameter Mixture-of-Experts (MoE) architecture, LongCat-Flash dynamically activates only 18.6 billion to 31.3 billion parameters (averaging ~27 billion) based on context. This intelligent design optimizes computational efficiency while maintaining robust performance, ensuring you get the most from your resources.
Ultra-Fast Inference Speed 🚀: Built with a shortcut-connected architecture and customized underlying optimizations, the model achieves an impressive inference speed of over 100 tokens per second (TPS) on NVIDIA H800 GPUs. This high throughput is critical for real-time applications and complex agentic workflows, significantly reducing latency and operational costs.
Exceptional Agentic Task Performance 🛠️: LongCat-Flash stands out in agentic tasks, outperforming leading models like GPT-4.1, Claude4, Gemini2.5 Flash, DeepSeek v3.1, Qwen3, and Kimi K2 on benchmarks like τ2-Bench and VitaBench. Its advanced multi-agent synthesis framework enables it to tackle high-difficulty scenarios requiring iterative reasoning and environmental interaction with superior accuracy.
Strong General Capabilities 💬: Beyond its agentic strengths, the model delivers robust performance in general tasks such as code generation and conversational responses, approaching the level of GPT-4o. This versatility makes it a valuable tool for a wide range of development and communication needs.
Use Cases
LongCat-Flash's unique blend of efficiency and advanced capabilities opens up numerous practical applications:
Intelligent Assistants & Chatbots: Develop highly responsive and capable AI assistants that can understand complex queries, interact with tools, and provide detailed, context-aware responses, enhancing user experience in customer service or internal operations.
Automated Marketing & Content Generation: Generate tailored marketing copy, such as promotional slogans or campaign ideas, by integrating with existing services. For example, craft compelling Mid-Autumn Festival messages like "Meituan, letting thoughts arrive before the moonlight."
Advanced Code Generation & Development Tools: Utilize its strong coding capabilities to accelerate software development, automate routine coding tasks, or assist developers in debugging and generating complex code snippets more efficiently.
Why Choose LongCat-Flash?
LongCat-Flash offers distinct advantages that set it apart, making it an ideal choice for developers and businesses:
Unmatched Performance in Agentic Tasks: Its demonstrated superiority in agentic benchmarks means you can build more reliable and effective AI agents capable of handling intricate, multi-step problems that challenge other leading models. You gain a competitive edge in automation and intelligent system development.
Cost-Effective High-Speed Inference: With inference costs as low as 5 RMB per million tokens and a speed exceeding 100 TPS, LongCat-Flash provides a highly economical solution for deploying powerful AI. This efficiency allows you to scale your applications without incurring prohibitive operational expenses.
Open-Source and Developer-Friendly: As an open-source model available on Hugging Face and GitHub, LongCat-Flash provides complete resources and a supportive ecosystem for developers. You can integrate, customize, and innovate with confidence, leveraging a powerful foundation model designed for real-world applications.
Conclusion
LongCat-Flash delivers a compelling combination of architectural innovation, competitive performance in agentic tasks, and cost-efficient high-speed inference. It's an essential tool for developers and organizations looking to build next-generation intelligent applications. Explore how LongCat-Flash can empower your projects and drive innovation today.
More information on LongCat-Flash
Launched
Pricing Model
Free
Starting Price
Global Rank
Follow
Month Visit
<5k
Tech used
LongCat-Flash was manually vetted by our editorial team and was first featured on 2025-09-08.
Related Searches
LongCat-Flash Alternatives
Load more Alternatives-
LongCat-Video: Unified AI for truly coherent, minute-long video generation. Create stable, seamless Text-to-Video, Image-to-Video & continuous content.
-
Reka Flash 3: Low-latency, open-source AI reasoning model for fast, efficient apps. Powering chatbots, on-device AI & Nexus.
-
Tongyi DeepResearch: The first open-source AI Web Agent for autonomous, state-of-the-art web research & complex reasoning. Unmatched accuracy.
-
LightAgent: The lightweight, open-source AI agent framework. Simplify development of efficient, intelligent agents, saving tokens & boosting performance.
-
