AI model · Z.ai
GLM 5.1
Model ID: z-ai/glm-5.1
- Input
- $0.97 per 1M tokens
- Output
- $3.03 per 1M tokens
- Context
- 205K tokens at once
- Max output
- 131K tokens per reply
- Released
- 7 Apr 2026 Z.ai
What it can do
- YesReasoning
- YesTool calling
- NoImage input
- YesOpen weights
- NoFree to use
Takes text; gives text.
How its listing describes it
GLM-5.1 delivers a major leap in coding capability, with particularly significant gains in handling long-horizon tasks. Unlike previous models built around minute-level interactions, GLM-5.1 can work independently and continuously on...
Sources
- Z.ai: GLM 5.1 on OpenRouter — read 2 Oct 2026