Chat with GLM 5.3 Flash.

Reads text, pictures and video, and holds a million words at once. Only 18B of its 320B works on each word, so it is quick and cheap for its size. This is what you get by default.

Start chatting with GLM 5.3 Flash now — free, no account

At a glance

  • Maker: Z.ai
  • Active parameters: 320B
  • Context window: 1M
  • Size: Very large
  • Memory: Handles very long documents
  • Good at: Coding and long, multi-step work
  • Supports: tools, images, zero data retention

Announced in Introducing GLM-5.3-Flash.

Model availability changes as upstream capacity comes and goes — the picker on the chat page shows what is ready right now.

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