GLM-5.3 Prime spotted on Alibaba Model Studio API
Confirmed2 evidence links
English original

Z.ai
GLM-5.3 Prime is a model from Z.ai. Release date unknown. The context window is 1,000,000 tokens. The maximum output is 131,072 tokens.
The context window is 1,000,000 tokens. The maximum output is 131,072 tokens.
Release date unknown