A balanced model for long text, practical programming, and natural writing
GLM-4.6 is a text-based large language model launched by Zhipu AI, balancing long-context processing, practical programming, reasoning, and natural writing. It is suited to analyzing requirements, materials, and historical discussions together, then delivering code, summaries, or copy. Compared with GLM-4.5, it expands the context window and improves frontend generation, tool collaboration, and multi-turn role expression.
Choose an available protocol for this model. OpenAI SDK uses a Base URL ending in /v1; Anthropic SDK uses the root URL. See each guide for protocol-specific parameters, tools and response formats.
Specifications and API features
First, clarify this model's input and standard calling method.
Model identifier
glm-4.6
Input and output
Text message input; assistant text output
Standard API
POST /v1/chat/completions; submit model and messages
The application passes relevant history and the current question in messages
Model features
Expanded long context, improved programming, tool collaboration, and natural writing
Native model features are for model selection; this platform's input limits, available parameters, and billing are subject to this model's API and pricing. Chat Completions uses stream for continuous output, and the client is responsible for storing message history.
Core Capabilities
Learn what glm-4.6 can bring to your work.
From Requirements to Editable Code
GLM-4.6 is suitable not only for completing short functions, but also for organizing modification plans around requirement specifications, existing code, and error messages. It supports mainstream programming languages and emphasizes the visual effects and logical layout of frontend pages, making it suitable for first generating page or feature drafts, then refining interactions and implementation through multiple rounds of feedback.
Long-Form Material Analysis and Tool Collaboration
A larger context window makes it easier to process multiple pieces of material, project constraints, and discussion history at once, reducing the need to split materials frequently. The model supports tool use during reasoning for task decomposition, search result synthesis, and cross-tool collaboration; performing searches or business operations requires the corresponding tools and runtime environment.
Natural Writing and Cross-Language Expression
It emphasizes readability, style adaptation, and consistency of characters across multiple rounds, making it suitable for ongoing revision of novels, screenplays, and brand copy. Its translation capabilities are optimized for French, Russian, Japanese, Korean, and informal expressions, and it can incorporate glossaries and tone requirements to maintain semantic coherence and localized expression in long passages.
Use Cases
Start with specific tasks to find where the model can be effective.
Frontend Prototypes and Feature Iteration
Provide page objectives, component requirements, existing code, and acceptance criteria, and have the model deliver layout code, interaction logic, and modification notes. Then add textual descriptions of screenshots or test errors to continue adjusting the solution. Suitable for product prototyping and development assistance; generated code still needs to be run and tested in the project environment.
Long-Document Organization and Report Drafting
Organize document text, meeting notes, and analysis questions into text, and ask the model to extract themes, compare viewpoints, and generate a report draft. You can specify chapter structure and source citation requirements to obtain summaries, discrepancy lists, and items requiring confirmation; key conclusions should retain their corresponding source materials for subsequent manual review.
Cross-Language Content and Character Management
Provide product descriptions, target languages, glossaries, and brand voice to generate localized copy or short-drama translations; you can also provide character settings and conversation history to continuously create dialogue. Deliverables are primarily text and are suitable for further polishing by editorial teams; do not equate translation or character writing with speech synthesis.
How to choose this model
Choose based on task complexity, input materials, and expected results.
How to choose when upgrading from GLM-4.5
If tasks often involve lengthy materials, code, and multi-step reasoning at the same time, GLM-4.6 is worth considering: its native context expands from GLM-4.5's 128K to 200K, with improvements to practical programming and tool use. For short Q&A or fixed-template tasks, use your own examples to compare delivery quality; there is no need to switch solely because of a version update.
How to choose between it and GLM-4.7
For general conversation, content creation, and applications that balance text analysis and code assistance, choose GLM-4.6 first. If the core tasks are code generation, tool calling, or Agent orchestration, include GLM-4.7 in comparative testing. Focus on modification correctness, tool completion, and output style, and do not apply specifications from newer versions in the series to GLM-4.6.
Getting started: handling long-form content with multiple rounds of revisions
Arrange the inputs first, then connect them to the appropriate application workflow.
Prepare the input
Provide the report draft, references, writing style, and revision requirements for this round, while retaining previously confirmed requirements.
Organize calls and follow-up workflows
Explicitly select glm-4.6 in the Chat Completions request, and organize the background, materials, and output requirements for this round into messages. First use a task with a clearly defined scope to check the response, then include actual review or test feedback in the next round of messages.
Practical task example: handling long-form content with multiple rounds of revisions
Design tasks directly from the following inputs and acceptance priorities.
Suggested task
Please condense repetitive discussion, standardize terminology, and retain all key conclusions and references; list the changes made and issues that still require author confirmation.
Key checks
Compare numbers, facts, and references in the original and revised drafts, and check whether any prior constraints were lost across multiple rounds of revisions; review the rewriting results item by item.
Usage Boundaries
Before formal use, understand the output quality and capability scope.
The native modality of GLM-4.6 is text, and it should not be used as an image recognition or audio generation model. When processing scanned materials, first extract the text; when analyzing images, provide a text description or choose a model with vision capabilities. Avoid treating attachment fields in the API as native image recognition capabilities.
Multi-turn history is managed by the application through messages. Compare numbers, facts, and citations in the original and revised drafts, and check whether previous constraints were lost during multi-turn revisions; rewrite results should be reviewed item by item.
Code generation and tool planning do not mean automatically executing programs, deploying web pages, or completing searches. Function calls in the direct generation endpoint need to be executed by the application and have their results returned; actions involving writing, publishing, and similar operations should be configured with authorization and confirmation steps, and code should be tested before being put into use.
Frequently Asked Questions
Answers to common questions when using glm-4.6.
Can GLM-4.6 directly view images or generate speech?
Its native input and output are both text, making it suitable for Q&A, code, writing, and text analysis. Image recognition or speech generation should use models with the corresponding capabilities; even if the call structure includes image or audio fields, this does not mean GLM-4.6 has these capabilities.
Does a 200K context mean it can output 200K?
No. The context window describes the overall text range available to a task, while the native maximum output is separately limited to 128K tokens. Actual requests must also account for input, conversation history, and response budget; for long-material tasks, first define a summary or chapter objective to avoid requesting too much content at once.
How should the GLM-4.6 thinking switch be understood?
Native usage provides thinking.type, which can be set to enabled or disabled and is enabled by default. It is not the same control method as reasoning_effort and should not be directly interchanged. When designing applications, distinguish between native thinking settings and the reasoning parameters of the selected calling endpoint.
How do I call glm-4.6 using the standard API?
Submit model=glm-4.6 and messages to /v1/chat/completions. Read standard results from choices[].message.content; for streaming calls, use stream to obtain incremental results. Use this platform's API Key and set the full base URL according to the SDK you use.
GLM-4.6 supports tool calling, so will it automatically access the internet?
Tool calling capability means the model can select tools and organize call parameters; it does not mean every question will automatically access the internet. The direct generation endpoint requires declaring tools and handling execution results; when using a session workflow with tools, you should also clearly specify the retrieval target, authorization scope, and required deliverables.