Free perks just got better! The mysterious blockbuster "Ox Alpha" aka GLM-5.3-Flash is now officially live on http://B.AI, fully open and free for everyone! As the first native all-modality model in the GLM-5 series, GLM-5.3-Flash boasts 320B total parameters and 18B active parameters, built entirely on domestic AI chips. The model introduces a hybrid architecture combining sparse and linear attention for the first time, enhanced by the mHC mechanism and pre-trained on 30T multimodal data. Paired with a 1M ultra-long context, it delivers a perfect blend of superior intelligence and ultimate cost-effectiveness. Now available for full free access via the official API group—unlock this hardcore tool, rivaling Claude Opus 4.8 in Coding and Agent scenarios, at zero cost! Try it for free now: https://chat.b.ai/chat