AI model · Z.ai
GLM 5.3 Prime
Model ID: z-ai/glm-5.3-prime
- Input
- $2.80 per 1M tokens
- Output
- $8.80 per 1M tokens
- Context
- 1M tokens at once
- Max output
- 131K tokens per reply
- Released
- 23 Sep 2026 Z.ai
What it can do
- YesReasoning
- YesTool calling
- NoImage input
- NoOpen weights
- NoFree to use
Takes text; gives text.
How its listing describes it
GLM-5.3-Prime is the high-speed variant of Z.ai's GLM-5.3, inheriting its full capabilities while delivering 1.5–2× the output throughput through inference acceleration. It supports text input and output with a 1M-token...
Sources
- Z.ai: GLM 5.3 Prime on OpenRouter — read 2 Oct 2026