GLM-5.3-Flash variant launches with claimed speeds of up to 200 tokens per second
A September 21 announcement lists the model code as glm-5.3-flashx, priced at 2.5× as much as GLM-5.3-Flash on both the API and Coding Plan.
TLDR
A September 21, 2026 post announces glm-5.3-flashx, a faster GLM-5.3-Flash variant with claimed speeds of up to 200 tokens per second. The announcement puts its price at 2.5× that of GLM-5.3-Flash on both the API and Coding Plan. It says access is open to all API users, while Coding Plan users can apply through a linked form.
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