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Overview

GLM-4.6V series are Z.ai’s iterations in a multimodal large language model. GLM-4.6V scales its context window to 128k tokens in training, and achieves SoTA performance in visual understanding among models of similar parameter scales. Crucially, GLM-4.6V integrate native Function Calling capabilities for the first time. This effectively bridges the gap between “visual perception” and “executable action,” providing a unified technical foundation for multimodal agents in real-world business scenarios.

Positioning

High Performance

Input Modality

Video / Image / Text / File

Output Modality

Text

Context Length

128K

Resources

Introducing GLM-4.6V

1

Native Multimodal Tool Use

Traditional tool usage in LLMs often relies on pure text, requiring multiple intermediate conversions when dealing with images, videos, or complex documents—a process that introduces information loss and engineering complexity.GLM-4.6V is equipped with native multimodal tool calling capability:
  • Multimodal Input:  Images, screenshots, and document pages can be passed directly as tool parameters without being converted to text descriptions first, minimizing signal loss.
  • Multimodal Output:  The model can visually comprehend results returned by tools—such as searching results, statistical charts, rendered web screenshots, or retrieved product images—and incorporate them into subsequent reasoning chains.
This native support allows GLM-4.6V to close the loop from perception to understanding to execution, enabling complex tasks like mixed text-image content creation and visual web searching.
2

Capabilities & Scenarios

GLM-4.6V can accept multimodal inputs—mixed text/image papers, reports, or slides—and automatically generate high-quality, structured image-text interleaved content.
  • Complex Document Understanding:  Accurately understands structured information from documents containing text, charts, figures, and formulas.
  • Visual Tool Retrieval:  During generation, the model can autonomously call search tools to find candidate images or crop key visuals from the source multimodal context.
  • Visual Audit & Layout:  The model performs a “visual audit” on candidate images to assess relevance and quality, filtering out noise to produce structured articles ready for social media or knowledge bases.
3

Overall Performance

We evaluated GLM-4.6V on over 20 mainstream multimodal benchmarks, including MMBenchMathVista, and OCRBench. The model achieves SOTA performance among open-source models of comparable scale in key capabilities such as multimodal interaction, logical reasoning, and long-context understanding.Description

Examples

Highlights Analysis
  • Supports native multimodality, enabling direct processing of documents containing visual elements (e.g., images, tables, curves, etc.). This eliminates the need for cumbersome and error-prone preprocessing steps such as OCR and document parsing.
  • In addition to text output, the model is capable of independent decision-making to locate the pages and regions where relevant content resides. It can also invoke tools via MCP for screenshot capture and embedding, generating well-illustrated reports.
  • On the basis of in-depth paper reading and information analysis & consolidation, the model is endowed with reasoning capabilities, allowing it to express its own “insights” on specific topics.

Prompt

DescriptionBased on the key visualizations from the two papers, this research report delivers a comprehensive, illustration-integrated analysis of the bench described in the literature.

Display

Think
Answer
Rendered Result:Description

Quick Start

Basic Call
Streaming Call