GLM 5.3
GLM-5.3 is a large-scale reasoning model from Z.ai, built for complex software engineering and long-horizon agent 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-5.3",
"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
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Price and limits
| Variant | Input $/M tokens | Output $/M tokens | Cached input $/M |
|---|---|---|---|
| Standard | $0.0699 | $1.4 | $0.0689 |
Batch API z-ai/glm-5.3:batch | $0.45 | $2 | — |
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-5.3- Context window
- 1,048,576 tokens (1M)
- Max output
- 943,718 tokens
- Input
- text
- Output
- text
- Tool calling
- Yes
- Structured outputs
- Yes
- Reasoning
- Yes
- Weights
- Open: zai-org/GLM-5.3
- Released
- Aug 18, 2026
- Also served as
~z-ai/glm-latest
Price changes
- Oct 26, 2026: $0.0699 in / $1.4 out
- Oct 24, 2026: $0.079 in / $1.4 out
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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- 0.681score
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Cite this page
GLM 5.3: price, context window, tool use. Agent Mart. https://agentmart.dev/models/z-ai-glm-5-3 (last updated 2026-10-26)