The all-in-one AGI infrastructure platform B.AI announces the official launch of Zhipu's GLM-5.3-Flash (320B-A18B) on its platform, with full free access available via the official B.AI API group. As the first natively multimodal model in the GLM-5 series, GLM-5.3-Flash features a total of 320 billion parameters and 18 billion activated parameters, powered entirely by domestically developed AI chips. It introduces for the first time a hybrid architecture combining sparse and linear attention, paired with a 1M token context length, delivering exceptional performance and unmatched cost-efficiency—making it a leading force among domestic models. Starting today, developers can access this powerful tool at zero cost through the B.AI official API group, effortlessly handling complex reasoning, long-text processing, and multimodal tasks. B.AI continues to lower the barrier to AI adoption by providing accessible computing power, enabling more developers to leverage top-tier domestic models.
B.AI Launches GLM-5.3-Flash with Full Free API Access
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Summary
B.AI has launched GLM-5.3-Flash (320B-A18B), a native multimodal model in the GLM-5 series, with full free API access. Built on domestic AI chips, it features 320 billion total and 18 billion active parameters, a hybrid attention architecture, and support for 1 million token ultra-long contexts. Developers can now use the model free of charge to handle complex reasoning, long-form text, and multimodal tasks. This AI + crypto news update highlights on-chain momentum as the model gains traction.
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