# GLM 5.2

Z.ai released GLM 5.2, a flagship built for long-horizon agentic tasks on a solid 1M-token context and positioned by its published benchmarks as the strongest open-source coding model. Rather than forwarding vendor numbers, Fireworks ran the open weights on its own GPUs and inference engine and scored 91.4% (181/198) on GPQA-Diamond in high reasoning mode, matching Z.ai's reported 91.2%. The model ships under an MIT license and is live on Fireworks for developers and LLM researchers.

Z.ai released GLM 5.2, a flagship built for long-horizon agentic tasks on a solid 1M-token context and positioned by its published benchmarks as the strongest open-source coding model. Rather than forwarding vendor numbers, Fireworks ran the open weights on its own GPUs and inference engine and scored 91.4% (181/198) on GPQA-Diamond in high reasoning mode, matching Z.ai's reported 91.2%. The model ships under an MIT license and is live on Fireworks for developers and LLM researchers.