Zhipu AI officially launched its latest flagship large language model, GLM-5.2, on June 17, 2026, at 5:21 PM. The model features a 1 million token context window, leading in long-horizon task completion, and is now available to all GLM Coding Plan users across Lite, Pro, Max, and team versions [1, 2, 3, 4].
On the same day, GLM-5.2 was fully open-sourced under the MIT license and made accessible via API service on China's national supercomputing internet platforms. The model files and API services were launched simultaneously, allowing broad public and commercial use [1, 2, 5, 4].
Chinese GPU vendors Mooki (沐曦股份) and Moore Threads (摩尔线程) announced Day-0 adaptations, confirming that GLM-5.2 is supported on their AI GPU products from launch day. This coordination ensures smooth deployment and optimization across major domestic hardware ecosystems [3, 6].
Following the model's announcement and release, Zhipu's stock price surged nearly 28%, closing at 1,404 Hong Kong dollars. The company’s board expects GLM-5.2 to boost usage and call volumes on its open platform and API services, driving further growth [5, 7].
GLM-5.2’s 1 million token context window far exceeds typical large language models, aiming to improve understanding and reasoning on extended documents or conversations [1, 2, 5, 7]. Zhipu’s rollout of this model marks a significant technological advance in large-scale language processing available under open-source terms.
API access for GLM-5.2 will go live next week for developers and enterprises wanting to integrate the model into their applications [1, 2, 5, 4].
