Short answer
“GLM Auto” is ambiguous. If you mean AutoGLM, Z.ai documents AutoGLM-Phone-Multilingual as a phone-agent framework for understanding screens and carrying out device actions. If you mean CometAPI’s auto entry, that is a separate listing beside GLM-5.5; the comparison page does not explain what auto selects or how to call it. These names do not establish that the two are the same product—or that CometAPI’s auto is a Z.ai model. (Z.AI AutoGLM documentation; CometAPI comparison)
Which “GLM Auto” do you mean?
| If you mean… | What the documentation supports | What it doesn’t establish |
|---|---|---|
| AutoGLM / AutoGLM-Phone-Multilingual | Z.ai describes a phone-agent framework combining visual understanding, planning, and device control. Its documentation lists Android phones and English and Chinese as supported. (Z.AI AutoGLM documentation) |
It does not make AutoGLM synonymous with a general-purpose GLM chat model or CometAPI’s auto entry. |
CometAPI’s auto entry |
CometAPI lists the API model ID auto beside a separate GLM-5.5 entry with ID glm-5.5. (CometAPI comparison) |
The comparison does not define auto, identify what it routes to, or provide an endpoint for it. |
If you’re looking for a phone-control agent: AutoGLM
AutoGLM is for a different job from a chat API that returns text. Z.ai describes a system that observes a phone screen, plans actions, and operates a device. Its Open-AutoGLM repository describes the phone-agent framework, including sensitive-action confirmation and manual takeover for login or verification-code scenarios. (github.com)
The repository states that the project is “for research and learning purposes only” and prohibits illegal uses. Review its terms before deployment; this statement is not a claim that the project’s license itself prohibits every commercial use. (github.com)
That makes AutoGLM a candidate to evaluate for mobile UI automation. It does not establish that every action in a supported app will succeed or that the framework is a hosted service with production guarantees.
If you mean an API’s auto option
CometAPI’s comparison labels one entry AUTO, assigns it the ID auto, and displays a dash rather than an endpoint. The same page lists /v1/chat/completions for GLM-5.5 as a separate entry. The page does not explain what auto routes to, whether its destination can vary, or what capabilities and limits apply. (CometAPI comparison)
Practical takeaway: don’t integrate auto in production based on that comparison alone. Confirm the provider’s current API reference, endpoint, request format, and routing behavior first.
Production API: what the framework documents
The Open-AutoGLM command-line instructions show the framework being configured with a model API URL and model name, and provide an API-key option. For example, the documented interactive command is:
python main.py --base-url <MODEL_API_URL> --model <MODEL_NAME>
The README also shows API-key authentication with --apikey. These are framework configuration instructions with placeholders, not a complete request to a named hosted AutoGLM API. The instructions do not supply a specific hosted endpoint, model value, or provider-specific authentication details for that service. (github.com)
So the available documentation supports configuring the phone-agent framework to connect to a model API, but does not establish a turnkey Z.ai-hosted AutoGLM inference endpoint. Before relying on it in a production service, confirm the actual model-serving channel, endpoint/base URL, model identifier, authentication method, request compatibility, and service availability with the provider or deployment you plan to use. The README’s example does not by itself establish production support or an SLA.
That is different from CometAPI’s auto entry: the comparison gives its ID but no endpoint or routing details. Do not substitute a request for another GLM model and assume auto is compatible.
Which one should you choose?
- You need an agent to operate a phone: evaluate AutoGLM against your devices, apps, permissions, confirmation steps, and failure-handling requirements. Its documented purpose is phone interaction. (
Z.AIAutoGLM documentation) - You need a named GLM model for a text API: use that model’s own current documentation and exact model ID; do not treat
autoas a documented substitute. - You want a gateway to choose a model automatically: CometAPI’s comparison alone does not tell you what its
autoentry selects. Verify routing, supported inputs, limits, pricing, and behavior if the destination changes before using it in a production path. (CometAPI comparison)
The CometAPI page leaves context-window, maximum-output, and modality fields unpopulated for both GLM-5.5 and AUTO. Its displayed price formatting also does not clearly explain the relationship between the amounts shown. Those fields are not a reliable basis for a capability or cost comparison. (CometAPI comparison)
Bottom line: for phone automation, the relevant documented name is AutoGLM-Phone-Multilingual. For CometAPI’s auto, the listing shows a name and ID, but does not establish its meaning or production API details. Keep the two interpretations separate, and confirm the serving endpoint and terms for your intended channel before deployment.
Sources
AutoGLM-Phone-Multilingual — Z.AI Developer Documentation