GLM 5.3 FlashX
GLM-5.3-FlashX is the high-speed variant of Z.ai's GLM-5.3-Flash, a native multimodal model delivering inference speeds of up to 200 tokens/s.
Model by Z.ai
Chalk Labs
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Install
Pick your client. Read the repository before you give any tool access to your data.
{
"model": "z-ai/glm-5.3-flashx",
"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: model-inference
Reviews
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Price and limits
| Variant | Input $/M tokens | Output $/M tokens | Cached input $/M |
|---|---|---|---|
| Standard | $0.37 | $1.25 | $0.09 |
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-flashx- Context window
- 1,048,576 tokens (1M)
- Max output
- 131,072 tokens
- Input
- text, image, video
- Output
- text
- Tool calling
- Yes
- Structured outputs
- Not listed
- Reasoning
- Yes
- Weights
- Closed
- Released
- Sep 18, 2026
Details
- Auth
- API key
- License
- Proprietary
- Website
- z.ai
- First seen
- Oct 24, 2026
- Last checked
- Oct 26, 2026
- Source
- OpenRouter
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Cite this page
GLM 5.3 FlashX: price, context window, tool use. Agent Mart. https://agentmart.dev/models/z-ai-glm-5-3-flashx (last updated 2026-10-26)