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Midjourney Image API developer guide

Midjourney Image is currently "Available". This guide provides model IDs, price snapshots, and copyable examples for integration. Midjourney Image model page

Overview

Vendor: Midjourney
Type: Image
Number of tiers: 1
Endpoint tags: image-task

Available tiers and pricing

The model in requests must use the model IDs in the table below, case-sensitive.

Tier	Model ID	Input	Output	Context
Midjourney Image	`midjourney`	$0.011000–$0.594000 / 次	总价按请求参数和实际用量计算	—

Prices are build-time snapshots; refer to the pricing page and console for the latest prices.

Base URL and authentication

Base URL is https://api.rokoapi.com/v1. All requests must include Authorization: Bearer $OPENAI_API_KEY.

Console

Quickstart

curl https://api.rokoapi.com/v1/images/tasks \
  -H "Authorization: Bearer $OPENAI_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
  "model": "midjourney",
  "prompt": "A serene lake at dawn, photorealistic",
  "mode": "fast",
  "quality": "standard"
}'

Common parameters

Parameter	Description
`model`	Use the public model IDs from the table above.
`prompt` / `messages`	Input prompt, conversation messages, or generation instructions; format depends on the endpoint.
`quality` / `duration` / `image_urls`	Generation models can accept size, quality, duration, aspect ratio, or reference asset URLs based on model capabilities.

After a successful async generation task submission, a task ID is returned. Poll GET /v1/tasks/{task_id} until the status becomes completed or failed.

Notes

Use only the model IDs listed on this page; unprovisioned or retired names will return a model unavailable error.
If you encounter a 403 error, check your account balance, key group, and model access permissions.
Multimodal, tool calling, caching, and streaming capabilities depend on the upstream model and channel configuration; refer to actual responses.