GLM-5.2

GLM-5.2 is the latest flagship large language model (LLM) developed by zai-org, hosted on Hugging Face. It is specifically designed to excel in long-horizon tasks, offering a substantial improvement over its predecessor, GLM-5.1. A key feature is its robust capability to handle a solid 1M-token context, enabling stable performance over extended interactions and complex problems. The model also boasts enhanced coding abilities, providing multiple thinking effort levels to optimize between performance and latency. Architecturally, GLM-5.2 introduces innovations like IndexShare, which reuses indexers across sparse attention layers, significantly reducing computational FLOPs at a 1M context length. It also features an improved MTP layer for speculative decoding, boosting acceptance length. The model is released under an MIT open-source license, ensuring broad accessibility without regional or technical restrictions. GLM-5.2 demonstrates competitive benchmark results across various reasoning, coding, and agentic tasks when compared to other leading models like Claude Opus, GPT-5.5, and Gemini 3.1 Pro. It supports local deployment through popular frameworks such as SGLang, vLLM, and Transformers, including specialized support for Ascend NPU platforms.