announcement aidev NEEDS REVIEW SIG 3/5

GLM 5.3 ID appears in OpenRouter's catalog at 1M context

The ID z-ai/glm-5.3 showed up in OpenRouter's public model-list API on 2026-08-21, listed at 1,048,576 context. Catalog observation only — no Z.ai announcement was checked, and the entry could be a test or placeholder.

PUBLISHED—
OBSERVED2026-08-21
AGE5d
SOURCES1
  • Model ID: z-ai/glm-5.3
  • Catalog name: Z.ai: GLM 5.3
  • Listed context length: 1,048,576
  • Source endpoint: https://openrouter.ai/api/v1/models
  • First seen 2026-08-21; absent from the prior read
  • Not a vendor announcement — treat as a trace, not a shipped product fact
new-modelmodel-supportcontext-window

COMMUNITY

No curated reactions recorded for this event. Facts and takes are kept in separate layers — community context is added by hand, never blended into the record above.