CogView 4

z-ai/cogview-4-250304

Z.ai's first open-source text-to-image model (6B, Apache 2.0, March 2025), notable for drawing Chinese characters in images and taking long Chinese or English prompts; outputs 512 to 2048 px. GLM-Image has since replaced it as Z.ai's main image model.

Get API Key Read the Docs

curl "$AUDIOLAB_API_URL/v1/images/generations" \
  -H "Authorization: Bearer $AUDIOLAB_API_KEY" \
  -H "Idempotency-Key: $AUDIOLAB_REQUEST_ID" \
  -H "Content-Type: application/json" \
  -d '{
  "model": "z-ai/cogview-4-250304",
  "prompt": "A mountain lake at sunrise."
}'

Input Price: $0.0085 / image
Output Price: —
Input: Text
Output: Image

Capabilities

Explore what CogView 4 supports, then use the API section for a request tailored to this model.

Model Information

Provider: Z.AI
Product: Image Generation
Release Date: Mar 4, 2025
Data Policy: Not specified
Region: Singapore
Input: Text
Output: Image

Provider Documentation

Playground

Try CogView 4 by Z.AI. Requests use the selected workspace’s credits and API pricing.

CogView 4

This model uses a dedicated input format. Explore its API example or open the supported playground.

View API reference

Providers

Compare available endpoints, pricing, and context limits for CogView 4.

Provider	Context	Output	Input Price	Output Price	Endpoint
Z.AI	Not specified	Image	$0.0085 / image	—	`cogview-4-250304`

Prices are catalog rates. Your workspace’s estimate and endpoint pricing determine the final charge.

Input and Output Limits

Formats and limits AudioLab enforces on each request.

Limit	Value
Max input bytes	1024
Max images	1

Provider Notes

One 1024×1024 image at the published per-image tariff, returned as base64 after validation.

Status

Current catalog availability. Your workspace’s access is checked separately before a request runs.

Checking availability…

A live availability check is not available right now.

Getting Started

Use your workspace API key and the exact model identifier below. Set the API URL to the endpoint shown in your workspace and keep credentials on your server.

curl "$AUDIOLAB_API_URL/v1/images/generations" \
  -H "Authorization: Bearer $AUDIOLAB_API_KEY" \
  -H "Idempotency-Key: $AUDIOLAB_REQUEST_ID" \
  -H "Content-Type: application/json" \
  -d '{
  "model": "z-ai/cogview-4-250304",
  "prompt": "A mountain lake at sunrise."
}'

Read the Endpoint Reference

Request Parameters

Available parameters depend on the provider and request format. The endpoint reference explains accepted values and required fields.

Parameter	Details
`model`	`z-ai/cogview-4-250304` — Required model identifier.
`prompt`	View Accepted Values

Input and Output Limits

Formats and limits AudioLab enforces on each request.

Limit	Value
Max input bytes	1024
Max images	1

Similar Models

Explore more image generation and compare their capabilities.

Model	Context	Input Price	Output Price
GLM ImageZ.AI	Not specified	$0.0128 / image	—
Gemini Nano Banana 2.1Google Gemini	Not specified	$1.275 / 1M tokens	$25.50 / 1M tokens
GPT Image 2.5 FlareOpenAI	Not specified	$4.25 / 1M tokens	$25.50 / 1M tokens
GPT Image 2.5 Flare (2026-09-08)OpenAI	Not specified	$4.25 / 1M tokens	$25.50 / 1M tokens
GPT Image 2.5 SunburstOpenAI	Not specified	$4.25 / 1M tokens	$25.50 / 1M tokens
GPT Image 2.5 Sunburst (2026-09-08)OpenAI	Not specified	$4.25 / 1M tokens	$25.50 / 1M tokens

View All Image Generation