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GLM-5.3

90 days since Z.ai announced it ·

GLM-5.3 is an open-weights LLM from Z.ai, announced 14 Aug 2026. It costs $1.40 per 1M input tokens and $4.40 per 1M output tokens. Its context window is 1M tokens. It has 744B parameters.

Input
$1.40
per 1M tokens
Cache write
—
per 1M tokens
Cache read
$0.26
per 1M tokens
Output
$4.40
per 1M tokens
Context window
1M
tokens
Parameters
744B
total

Our coverage

We haven’t written about GLM-5.3 yet.

Z.ai · Big

open weights
  1. GLM-5.3 +59d
  2. GLM-5.2

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  3. GLM-ASR-Nano-2512

Facts last updated , from Z.ai’s own pages.