Z.ai API
Canonical page on the main site: sinoaihub.com/api/zai
Type
api
Definition
Z.ai API is Zhipu AI's official API platform (endpoint https://api.z.ai/api/paas/v4/chat/completions).
Key facts
- Endpoint: https://api.z.ai/api/paas/v4/chat/completions
- Authentication: Bearer API key
- Capabilities: streaming, tool calling, vision
Provider
Api Type
official
Endpoint
https://api.z.ai/api/paas/v4/chat/completions
Authentication
Bearer API key
Streaming
Yes
Function Calling
Yes
Tool Calling
Yes
Vision
Yes
Context Limits
| model | input_limit | output_limit |
|---|---|---|
| glm-5.3 | 1048576 | 131072 |
| glm-5.3-flash | 1048576 | 131072 |
Regions
- international
- china
Cloud Providers
- Z.ai
- BigModel
Pricing Ref
Documentation
https://docs.z.ai/
Limitations
- Rate limit documentation page not located (docs.z.ai paths 404) as of 2026-09-27
Verification Status
verified
API Changes
No documented API changes on record as of 2026-09-29.
Last Verified
2026-09-20
Source history
No documented source-change events located as of 2026-09-20.
Sources
| evidence_id | source_name | source_url | source_type | published | verified | confidence | conflict |
|---|---|---|---|---|---|---|---|
| src-apis-zai-1 | Z.ai docs — Quick Start | https://docs.z.ai/ | Official documentation | — | 2026-09-20 | high | — |
| src-apis-zai-2 | Z.ai docs — GLM-5.3 model page | https://docs.z.ai/guides/llm/glm-5.3 | Official documentation | — | 2026-09-20 | high | — |