Cloudflare AI Search Adds GLM-5.3 Flash with 1M Context

What shipped: Cloudflare AI Search now supports GLM-5.3 Flash as a text generation model.

What changed: The model @cf/zai-org/glm-5.3-flash is now available to configure as the text generator for any AI Search instance. It brings a 1,048,576-token context window and runs on Workers AI. To use it, update your AI Search configuration's supported models list.

Why a builder cares: This is the first time Cloudflare has made a 1M-context model available through AI Search. For teams running semantic search on long documents, codebases, or transcripts, this means the search engine can reason over the full content — not just chunks — when generating answers. Same model, one more surface to wire it into.