GLM-5.3-Flash
Catalog modelA multimodal model bringing efficient reasoning to coding and agentic applications. A model by Z.ai, selected for the ProbSeek v1 catalog.
This catalog describes models selected for ProbSeek v1. Confirm account access, endpoint features, and pricing before sending requests, and review the Terms of Service and Privacy & Data Policy. Access details · Privacy & Data Policy
Intelligence for your next application.
A multimodal model bringing efficient reasoning to coding and agentic applications. Evaluate it on the tasks that matter to your product.
Explore its capabilities
Reasoning
Work through multi-step questions and tasks that benefit from deeper context.
Coding
Explore code generation, explanation, debugging, and programming assistance.
Vision
Combine language with information from images in multimodal applications.
Tool use
Build model-assisted workflows around functions defined by your application.
Know what you are building on
These capabilities describe the upstream model. Check your account documentation for confirmed availability, exact model IDs, enabled modalities, tools, and serving limits.
Read the source model card ↗A familiar place to start.
This example illustrates a chat-completions request. Set the full endpoint and API key provided with your account. Confirm the API contract before running it.
import os
import requests
response = requests.post(
os.environ["PROBSEEK_CHAT_ENDPOINT"],
headers={"Authorization":
"Bearer " + os.environ["PROBSEEK_API_KEY"]},
json={
"model": "z-ai/glm-5.3-flash",
"stream": False,
"max_tokens": 256,
"messages": [{"role": "user",
"content": "What could I build with AI?"}]
},
timeout=60
)
response.raise_for_status()
print(response.json())curl "${PROBSEEK_CHAT_ENDPOINT:?Set your full HTTPS chat endpoint}" \
--fail-with-body --max-time 60 \
-H "Authorization: Bearer $PROBSEEK_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"model": "z-ai/glm-5.3-flash",
"stream": false,
"max_tokens": 256,
"messages": [{
"role": "user",
"content": "What could I build with AI?"
}]
}' Before your first request
- Install the Python requests package, or use cURL.
- Set PROBSEEK_CHAT_ENDPOINT to your full chat-completions URL.
- Keep PROBSEEK_API_KEY in your server environment.
- Confirm model ID, pricing, endpoint limits, and effective data terms; handle API errors.
Model specifications
Reference details from the upstream model documentation.
- Model
- GLM-5.3-Flash
- Catalog model ID
- z-ai/glm-5.3-flash
- Model author
- Z.ai
- Source context window
- See model card
- Source parameters
- 320B total / 18B active
- Capabilities
- Reasoning, Coding, Vision, Tool use
- Model license
- MIT
- Service
- API inference
- Endpoint limits
- Not published