GLM 5.1
GLM-5.1 delivers a major leap in coding capability, with particularly significant gains in handling long-horizon tasks.
Model by Z.ai
Install
Pick your client. Read the repository before you give any tool access to your data.
{
"model": "z-ai/glm-5.1",
"baseURL": "https://openrouter.ai/api/v1"
}OpenAI-compatible API: point any OpenAI SDK at the base URL and use this model id.
Settings it needs
OPENROUTER_API_KEYrequiredsecret
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About
Use cases: code-generation, model-inference
Reviews
Write a reviewNo reviews yet. Installed it? Reviews come from verified installers only. How reviews work
Price and limits
| Variant | Input $/M tokens | Output $/M tokens | Cached input $/M |
|---|---|---|---|
| Standard | $1.4 | $4.4 | $0.26 |
Price as of Oct 26, 2026 from OpenRouter · provider's own prices: docs.z.ai. Prices change often; check before you rely on one.
- Provider
- Z.ai
- Model id
z-ai/glm-5.1- Context window
- 204,800 tokens (205K)
- Max output
- 131,072 tokens
- Input
- text
- Output
- text
- Tool calling
- Yes
- Structured outputs
- Yes
- Reasoning
- Yes
- Weights
- Open: zai-org/GLM-5.1
- Released
- Apr 7, 2026
Details
- Auth
- API key
- License
- License unknown
- Website
- z.ai
- First seen
- Oct 24, 2026
- Last checked
- Oct 26, 2026
- Source
- OpenRouter
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Cite this page
GLM 5.1: price, context window, tool use. Agent Mart. https://agentmart.dev/models/z-ai-glm-5-1 (last updated 2026-10-26)