Vercel added Z.ai's GLM-5.3 to AI Gateway, making it a model choice within the gateway's shared API. Applications select it with the identifier zai/glm-5.3. The announcement also describes connecting coding agents to the gateway and choosing that model there. Release details.
The integration places model access alongside the gateway's usage tracking, budgets and retry and failover configuration. That is the concrete deployment change: a team can evaluate GLM-5.3 through the same service it uses to manage other model calls. The announcement's performance comparisons remain vendor claims, separate from this integration capability. Gateway workflow.
Terms in this piece · Glossary
AI agent — An AI system that doesn't just answer once but works toward a goal in a loop — taking actions, reading the results, and deciding what to do next.
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.
context window — The maximum amount of text a model can consider at once — its working memory for the current conversation or task.
