GLM 4.6
VerifiedGLM 4.6 offers extensive context for advanced text tasks.
About GLM 4.6
GLM 4.6 is a proprietary large language model released by Z.AI. It processes text inputs within a context window of 202752 tokens. The architecture supports extended sequences while remaining closed-source.
Its primary strength lies in managing very long text contexts for coherent output. This capability suits scenarios where maintaining continuity across thousands of tokens matters. Parameter count details are not specified by the provider.
Typical usage includes document analysis, multi-turn conversations, and content generation. Developers integrate it via API for tasks demanding large context retention. The closed nature limits local deployment options.
Capabilities
How GLM 4.6 compares
GLM 4.6 (striped bar) vs other language models on intelligence, speed and price.
Price
USD per 1M output tokens · Lower is better · GLM 4.6 ranks #57 of 78
Sources: Artificial Analysis (intelligence, speed) · OpenRouter (price).
Best for
Long Document Analysis
GLM 4.6 processes inputs up to 202752 tokens, enabling detailed review and summarization of full-length reports, books, or research papers in a single pass.
Extended Multi-Turn Dialogues
The model maintains coherence across very long conversation histories, supporting complex ongoing discussions without losing earlier context.
Large Codebase Tasks
With its extensive context capacity, GLM 4.6 can analyze and generate code across entire repositories or lengthy scripts while tracking dependencies.
Strengths & limitations
Strengths
- +Handles very long contexts effectively
- +Strong bilingual performance in English and Chinese
- +Competitive reasoning and coding abilities
- +Efficient for a large-context LLM
Limitations
- –Text-only modality with no vision support
- –Subject to typical LLM hallucinations
- –Knowledge cutoff inherent to training data
Cost calculator
Estimate what GLM 4.6 would cost for your usage.
Based on GLM 4.6's $0.43/1M input · $1.74/1M output. Estimate only — actual cost varies by provider and caching.
Quick start
OpenRouter's API is OpenAI-compatible — most SDKs work by just swapping the base URL. Only the model slug changes between models.
import OpenAI from "openai";
const client = new OpenAI({
baseURL: "https://openrouter.ai/api/v1",
apiKey: process.env.OPENROUTER_API_KEY,
});
const completion = await client.chat.completions.create({
model: "z-ai/glm-4.6",
messages: [{ role: "user", content: "Hello!" }],
});
console.log(completion.choices[0].message.content);Model slug: z-ai/glm-4.6
Editor's verdict
GLM 4.6 is Z.AI's proprietary language models with a 203K-token context window.
At $1.74 per 1M output tokens, it is mid-priced for its class.
It is available through Z.AI's API and aggregators like OpenRouter.
Best suited to handles very long contexts effectively and strong bilingual performance in english and chinese.
Frequently asked questions
GLM 4.6 supports a context window of 202752 tokens.
User reviews
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