GLM-5.3 is 50% off through DigitalOcean on AI Gateway

Vercel's AI Gateway is offering GLM-5.3 at a 50% discount through Tuesday, September 8, in partnership with DigitalOcean, using the promo name 'zai/glm-5.3-promo-50'. The promo routes only to DigitalOcean and stops serving when the offer ends, while the standard model name continues to work across all providers after September 7. GLM-5.3 supports a 1M token context window and 128K token maximum output.

GLM-5.3 https://vercel.com/ai-gateway/models/glm-5.3 is 50% off on AI Gateway through Tuesday, September 8, in partnership with DigitalOcean. Using the promo name zai/glm-5.3-promo-50 gets the discounted rate. It routes only to DigitalOcean, with no fallback to another provider, and it stops serving when the offer ends. Using the standard name i.e., zai/glm-5.3 with provider options to sort DigitalOcean as the preferred provider keeps working after September 7 and routes across every provider that serves the model, at their usual rates. Because the promo name goes away when the offer ends, treat it as something you switch on for the window rather than hardcode. To keep the standard name in your code instead, pin the provider with order: 'digitalocean' under providerOptions.gateway , which prefers DigitalOcean and falls back to the others if it cannot serve the request. GLM-5.3 takes text input, with a 1M token context window and a maximum output of 128K tokens. Discounted requests appear in your spend dashboard and carry a trace like any other request. Try GLM-5.3 https://vercel.com/ai-gateway/models/glm-5.3 in the model playground. To use it in a coding agent, see the coding agents guide https://vercel.com/docs/ai-gateway/coding-agents , then run vercel ai-gateway coding-agents setup to connect agents like Claude Code, Codex, OpenCode, Cursor, Pi, and more and select zai/glm-5.3-promo-50 inside the agent. You can view all language models https://vercel.com/ai-gateway/models?type=text available on AI Gateway.