Xing4.0-29B-A4B is a 29-billion-parameter mixture-of-experts language model released by China Telecom, trained entirely on Huawei's Ascend NPU hardware rather than Nvidia GPUs. The model activates only 4 billion parameters per token, supports up to 512K context windows, and is optimized for agentic tasks including tool calling, coding, and multi-step planning. It integrates with deployment frameworks like vLLM and agent platforms including Claude Code.