GLM 5.3 Prime

Z.AI🇨🇳z-ai/glm-5.3-prime

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GLM-5.3-Prime is the high-speed serving tier of Z.ai's open-weight GLM-5.3 flagship, running the same weights (1M-token context, up to 128K output) behind an accelerated stack for 1.5-2x the output throughput at $2.80/$8.80 per million input/output tokens. Reasoning is always on (low, high, or max effort), and it targets latency-sensitive coding, streaming code generation, and long-horizon multi-turn agent orchestration.