B.AI to End GLM-5.3-Flash Free Trial, Launch 90% Discounted API Pricing on September 12

B.AI said its limited-time free trial for GLM-5.3-Flash will soon end, and a discounted API pricing plan will begin on September 12 at 10:00 SGT. According to ChainCatcher, users will pay 10% of the original price, with input pricing starting at $0.015 per million tokens and output pricing starting at $0.05 per million tokens. The native multimodal model has 320 billion total parameters and 18 billion active parameters. It uses a hybrid sparse and linear attention architecture and supports a 1 million-token context window, with B.AI saying it is designed for coding, agents, long-context processing, and high-frequency API workloads.