JT-4.1 Flash 236B A21B (Reasoning)

JT-4.1 Flash 236B A21B (Reasoning) is an advanced large language model developed by China Mobile, released on July 9, 2026. Designed specifically for professional-grade reasoning and complex information processing, the model features an extensive 256k token context window to handle large documents and data inputs effectively. It forms part of the JT-4.1 Flash product family, targeting tasks requiring deep logical deduction, data analysis, and sophisticated natural language comprehension.

The architecture incorporates a massive parameter scale of 236 billion parameters, optimized to balance computational throughput and logical inference depth. While traditional flash configurations focus primarily on high-speed low-latency responses, this reasoning variant dedicates internal compute resources toward multi-step problem solving, making it well-suited for structured workflows such as coding environments, advanced analytics, and strategic planning tasks.