Z.ai's ZCode offered a time-limited way to try GLM-5.3-Flash inside its coding application. The quoted promotion specified September 3–18, 2026, with a ten-hour daily access window. Coding Plan subscribers received daily free access during that period; new users received a one-time allowance of 100 million model text units, or tokenThe chunk of text a model reads and writes in — roughly three-quarters of a word — and the unit AI usage is billed in.Full definition →, expiring when the promotion closed.
Those were two different trial arrangements: recurring access for subscribers and a fixed allowance for newcomers. The announcement describes an expired promotional window, rather than a permanent free tier.
Terms in this piece · Glossary
token — The chunk of text a model reads and writes in — roughly three-quarters of a word — and the unit AI usage is billed in.
