mj_fast_shorten

Technical Specifications of mj-fast-shorten

What is mj-fast-shorten?

mj-fast-shorten is a CometAPI-hosted Midjourney-related utility model intended for prompt-shortening tasks. While the publicly indexed CometAPI page provides only limited descriptive detail, it clearly places the model in the Midjourney catalog, marks it as commercially usable, and prices it on a per-request basis. (cometapi.com)

Based on its name and catalog placement, mj-fast-shorten is best understood as a helper model for compressing or simplifying Midjourney prompts before they are sent into an image-generation workflow. That interpretation aligns with how Midjourney works in practice: image creation starts from text prompts, and developers often need cleaner, more compact prompt strings for experimentation, automation, or UX simplification.

In practical terms, this kind of model is useful when your application accepts verbose user descriptions, converts them into more concise prompt language, and then forwards the result into downstream Midjourney generation steps. Because the official indexed description is sparse, this usage description should be treated as a well-supported inference rather than an explicitly documented vendor guarantee. (cometapi.com)

Main features of mj-fast-shorten

• Prompt condensation: Designed to reduce long-form creative instructions into shorter prompt text suitable for Midjourney-oriented workflows. This is inferred from the model identifier and catalog context. (cometapi.com)
• Midjourney ecosystem alignment: The model is listed under CometAPI’s Midjourney model family, making it a natural fit for prompt preprocessing before image generation. (cometapi.com)
• Fast request-based usage: The naming and pricing structure suggest lightweight, request-level usage rather than long-running generation jobs, which is useful for real-time product features such as prompt cleanup or shortening. (cometapi.com)
• Commercial-use availability: CometAPI’s indexed listing flags the model for commercial use, which is helpful for teams embedding it into customer-facing tools or creative pipelines. (cometapi.com)
• Workflow simplification: Shorter prompts can be easier to store, compare, remix, and iterate on in systems that also use Midjourney controls such as parameters, prompt editing, and variations.
• Useful for prompt engineering pipelines: Midjourney’s documentation emphasizes that prompts are the starting point for generation, so a shortening utility can serve as a preprocessing step in prompt-engineering or prompt-normalization systems.

How to access and integrate mj-fast-shorten

Step 1: Sign Up for API Key

Sign up on CometAPI and create an API key from your dashboard. Once you have the key, store it securely and use it as a Bearer token in your API requests to access mj-fast-shorten. (cometapi.com)

Step 2: Send Requests to mj-fast-shorten API

Use CometAPI's Midjourney-compatible endpoint at POST /mj/submit/shorten.

curl https://api.cometapi.com/mj/submit/shorten \
  -H "Content-Type: application/json" \
  -H "Authorization: Bearer $COMETAPI_API_KEY" \
  -d '{
    "prompt": "a futuristic cityscape at sunset --v 6.1",
    "botType": "MID_JOURNEY",
    "accountFilter": {
      "modes": ["FAST"]
    }
  }'

Step 3: Retrieve and Verify Results

The API returns a task object with a task ID. Poll GET /mj/task/{task_id}/fetch to check generation status and retrieve the output image URL when the task reaches a terminal state.