JT-4.1 Flash 236B A21B is a large-scale language model developed by China Mobile as part of its JiuTian foundation model series. It is built on a Mixture-of-Experts (MoE) architecture designed to balance computational throughput with high-level reasoning performance. The model is specifically optimized for industrial and enterprise applications, focusing on low latency and cost efficiency during inference.
The model's architecture utilizes a total of 236 billion parameters, with only 21 billion parameters activated per token (as indicated by the "A21B" designation). This configuration allows the model to maintain the broad knowledge and logical depth associated with 200B-class dense models while achieving the operational speed of much smaller systems. It features a significant context window of 256,000 tokens, supporting the processing of extensive documents and complex multi-turn interactions.
JT-4.1 Flash 236B A21B is designed to perform competitively in both Chinese and English language tasks. It demonstrates capabilities in logical reasoning, mathematical problem-solving, and code generation. Positioned as a "Flash" variant within the 4.1 generation, it emphasizes high-speed text generation suitable for real-time customer service, automated document summarizing, and other high-volume production environments.