In the early hours of today, Zhipu introduced the API for its new-generation foundation model, GLM-5.3. This model excels in complex coding, defensive cybersecurity, and long-range tasks, achieving a score of 60 on the Artificial Analysis Intelligence Index. It ranks among the global cutting-edge models in terms of capability, on par with closed-source flagship models such as Claude Fable 5 and GPT-5.6 Sol, and ties for first place with Kimi K3 among open-source models.