GLM-5 is an open-weight large language model hosted on Hugging Face under the zai-org organization. It belongs to the class of foundation models designed for text generation and tool use through a structured function-calling mechanism.
The model incorporates a chat template that supports optional tool definitions supplied in JSON within XML tags. When tools are provided, it generates function calls in a specific XML format that includes the function name and argument key-value pairs. This enables the model to invoke external functions as part of its response process. The template also defines handling for visible text content, whether supplied as strings or structured items, and specifies special tokens such as a pad token set to <|endoftext|.
It is delivered as a downloadable model repository on the Hugging Face platform. Users can access the associated configuration files that embed the chat template in Jinja format. The hosting organization aligns with the broader Hugging Face ecosystem focused on open source and open science initiatives.
No specific pricing, licensing terms, or deployment methods beyond the repository itself are stated in the model page.
In the Foundation models & chat space, GLM 5 takes a focused approach. It focuses on running and experimenting with a capable open-weight language model locally or via self-hosted inference without relying on proprietary APIs. GLM 5 is an open-source project aimed at developers. The project is open source (Apache-2.0). GLM 5 is available on the web, the command line, and API.
Behind GLM 5 is ZAI Org, and the product first shipped in 2026. The project is developed in the open on GitHub with 6.7k stars and 12 commits in the last 90 days. PulseGate's similarity index places it among 18 comparable tools. Among its 5 catalogued features are Tool Calling, Chat Template, and Function Calling. It exposes integrations via a public API.
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