Z.ai: GLM 4.6

z-ai/glm-4.6

Compared with GLM-4.5, this generation brings several key improvements: Longer context window: The context window has been expanded from 128K to 200K tokens, enabling the model to handle more complex...

Modalities

In / out price

$0.43 / $1.75 per 1M

Context

205K

Released

Sep 30, 2025

Why use GLM 4.6

Step-by-step reasoning mode
Tool and function calling (agent-ready)
Structured (JSON) outputs

Pricing

Input	$0.43 / 1M tokens
Output	$1.75 / 1M tokens
Cached input (read)	$0.080 / 1M tokens

List prices via OpenRouter, checked daily. Real cost depends on the provider and on reasoning tokens.

How it ranks

Coding index45.8

Source: Artificial Analysis (artificialanalysis.ai) via OpenRouter (openrouter.ai/rankings).

Cost calculator

Pick a task, set how often you run it, and compare what it costs on each model.

TaskInput tokens≈ 602 wordsOutput tokens≈ 1,504 wordsRuns per month

Input served from cache: 0%Repeated prompts (same instructions or document) are billed at the cheaper cache-read price where the model supports it.

Model	Per run	Per month	Per 1,000 runs
Z.ai: GLM 4.6	$0.0038	$3.84	$3.84

Estimates from list prices via OpenRouter; real bills vary by provider and reasoning tokens.

Will it fit? Context window simulator

Each square is about one page (500 words). Colored squares are your content; grey squares are free space in the model's context window.

Your content

Novel (90,000 words)

Total: about 120,000 tokens (≈ 90,226 words). Token counts are estimates.

Models

Zoom (square size): 6pxZoom out to see a whole million-token window at once.

Z.ai: GLM 4.6

204,800 tokens ≈ 308 pages

Fits: uses 59% of the window.

Write with the best model for the job

WordGPT picks and switches models for you: drafting, editing and files in one place. Free plan, no credit card.

Try it free

Why use GLM 4.6

Pricing

How it ranks

Cost calculator

Will it fit? Context window simulator

Z.ai: GLM 4.6

More from Z.ai (GLM)