# Glm

> Call the GLM API (GLM 5.3 and earlier GLM 5 and 4 series) through RunAPI using OpenAI-compatible Chat Completions. Use for GLM text chat, streaming, or an existing compatibility client that needs the conditional reference.

- Skill: `runapi-ai/glm` (Agent Skill, multi-file: 2 files)
- Install (CLI): `npx skillmds@latest add runapi-ai/glm`
- Raw SKILL.md: https://api.skillmd.com/api/skills/runapi-ai/glm/raw
- Safety review: pending (external: skill-scanner PASS, skillspector PASS)
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Integrations & APIs
- Author: runapi-ai (https://skillmd.com/u/runapi-ai)
- Updated: 2026-09-17
- Page: https://skillmd.com/skills/runapi-ai/glm

---


# GLM on RunAPI

Use OpenAI-compatible Chat Completions at `https://runapi.ai/v1` as the primary protocol.

## Primary protocol recipe

### Authenticate

Set `OPENAI_API_KEY` to a RunAPI API key and `OPENAI_BASE_URL` to `https://runapi.ai/v1`.

### Send request

```python
from openai import OpenAI
client = OpenAI(api_key="YOUR_RUNAPI_TOKEN", base_url="https://runapi.ai/v1")
response = client.chat.completions.create(
    model="glm-5.3",
    messages=[{"role": "user", "content": "Summarize this review."}],
)
print(response.choices[0].message.content)
print(response.usage)
```

For long output, call the same method with `stream=True` and
`stream_options={"include_usage": True}`; consume every chunk through `[DONE]`.

### Verify result

Require final assistant content, a terminal `finish_reason`, and authoritative
`usage`. A stream is complete only after its terminal usage chunk and `[DONE]`.

### Stop boundaries

Correct a rejected shape once using the structured error. Retry transport once
only before any response or Usage and when replay is safe. Record a terminal
error and stop without changing model or protocol. For `glm-5.3`, keep requests
to text history on Chat Completions. Add tools, reasoning, structured output, or
multimodal input only when the current RunAPI contract explicitly verifies that
capability.

## Compatibility protocols

Do not use compatibility protocols with `glm-5.3`; use the primary recipe.
Load [compatibility protocols](references/compatibility-protocols.md) only when an existing client requires Anthropic Messages or Gemini contents for an earlier compatible model.

## GLM-5.3 capability boundary

| Capability | Current behavior |
|---|---|
| Text history, sync, streaming | Supported through OpenAI-compatible Chat Completions |
| OpenAI Responses, Anthropic Messages, Gemini contents | Not supported for `glm-5.3` |
| Tools, reasoning controls, structured output, multimodal input | Not declared pending model-specific evidence |
| Usage | Preserve returned token and cache fields; never infer missing details |

## Supported models

| Model ID | Use when |
|---|---|
| `glm-5.3` | Latest text workloads through Chat Completions |
| `glm-5.2` | Cross-protocol flagship text workloads |
| `glm-5.1` | Recent GLM chat workloads |
| `glm-5-turbo` | Faster GLM chat |
| `glm-5` | General GLM 5 requests |
| `glm-4.7` | GLM 4.7 compatibility |
| `glm-4.6` | Stable GLM 4.6 requests |
| `glm-4.5` | GLM 4.5 compatibility |
| `glm-4.5-air` | Lightweight GLM 4.5 requests |

## References

- <https://runapi.ai/models/glm.md>
- <https://runapi.ai/providers/z-ai.md>
- <https://runapi.ai/models.md>