AIREITER
Midjourney V8.1 AI Image Generator and API
Midjourney V8.1 is the latest image generation model from the Midjourney series, delivering refined aesthetics, stronger prompt adherence, and improved text rendering. Generate 4 images per request with native Midjourney syntax, choose Draft or Fast speed and Standard or HD quality, and use Retexture or Remove Background tools for targeted edits.
Latest Midjourney generation
V8.1 produces images with refined aesthetics, stronger prompt adherence, and improved coherence across complex scenes. It handles long descriptions, multi-subject compositions, and stylized art directions with greater consistency than previous versions.
Native Midjourney syntax
Use the full Midjourney parameter syntax directly in your prompt: --ar for aspect ratio, --s for stylize, --chaos for variation, --seed for reproducibility, --sref for style references, and more. No translation layer between your prompt and the model.
Speed and quality tiers
Choose Draft for lower-cost iteration or Fast for standard generation. Within Fast, select Standard or HD quality - HD applies a 1.5x price multiplier for higher-fidelity output. Each request returns up to 4 images.
Retexture and Remove Background
Beyond text-to-image, V8.1 includes a Retexture tool that regenerates an image with a new style while preserving its composition, and a Remove Background tool that produces a clean subject cutout in a single request.
What to Generate with Midjourney V8.1
Marketing and brand creative
Generate campaign visuals, product hero shots, and social media creative with precise stylistic control. Use --sref to lock a consistent art direction across a series, and --ar to match each placement format.
Concept art and illustration
Describe scenes, characters, and environments in natural language with Midjourney parameters for composition and style. V8.1 improved coherence makes it well suited to character concepts, environment painting, and editorial illustration.
Retexture existing images
Upload an image and describe a new visual style. Retexture regenerates the image with the new texture or aesthetic while preserving the original composition - useful for style transfer, material changes, and visual experimentation.
Background removal
Use Remove Background to produce a clean subject cutout from any image in a single request. The result is ready for compositing, product listings, or layered design workflows.
Supported Midjourney V8.1 Controls
The playground and API expose the controls verified through real generation tasks on AIReiter.
Speed tiers
Draft for lower-cost, faster iteration. Fast for standard-quality generation. The speed tier affects both the price and the generation time.
Quality tiers
Standard for everyday generation. HD for higher-fidelity output with a 1.5x price multiplier. HD is only available with the Fast speed tier - Draft does not support HD.
Native parameters
Pass Midjourney parameters directly in the prompt: --ar (aspect ratio), --s (stylize 0-1000), --chaos (0-100), --seed, --sref (style reference URL), --oref (image reference URL), --iw (image weight), --no (negative prompt).
Reference image
Optional. Upload one reference image to guide the generation. The image URL is prepended to the prompt and processed as an image-to-image input. Retexture and Remove Background require an input image.
Midjourney V8.1 Pricing
Generate - Draft and Fast Standard
9.75 credits per request. Covers Draft speed and Fast Standard quality. Each request returns up to 4 images regardless of how many pass content review.
Generate - Fast HD
14.625 credits per request. The HD quality tier applies a 1.5x multiplier to the base price for higher-fidelity output. HD is only available with Fast speed.
Retexture
14.625 credits per request. Fixed price for regenerating an uploaded image with a new style while preserving composition. Returns up to 4 images.
Remove Background
9.75 credits per request. Fixed price for producing a clean background-removed cutout from an uploaded image. No prompt needed.
Generate with Midjourney V8.1
Use the same controls in the browser playground or through the API. Native Midjourney syntax supported throughout.
Write the prompt
Describe the subject, scene, composition, lighting, and style. Add Midjourney parameters like --ar for aspect ratio, --s for stylize, or --sref for a style reference directly in the prompt text.
Choose speed and quality
Select Draft for lower-cost iteration or Fast for standard generation. If you choose Fast, pick Standard or HD quality. HD costs 1.5x the base price for higher-fidelity output.
Add a reference image (optional)
For text-to-image, skip this step. For image-guided generation, upload one reference image. For Retexture or Remove Background, an input image is required.
Generate and iterate
Submit the task, then poll for the result. Each Generate request returns up to 4 images. Refine the prompt, parameters, or tier and generate again until the result lands.
Use Midjourney V8.1 through the AIReiter API
Submit one normalized task and query the same external task ID until the generation reaches a terminal state.
Model IDs
Use mj_v8_1 for Generate, mj_v8_1_retexture for Retexture, and mj_v8_1_remove_bg for Remove Background. All three are grouped under the same page on AIReiter.
Submit a task
POST /api/openapi/submit with the model, params (prompt, speed, quality, optional image_url), and a unique out_task_id. The response returns a pending status and the estimated credit cost.
Query the result
POST /api/openapi/query with the same out_task_id. Poll until status is completed or failed. Completed responses include the final credits_used and the output image URLs.
Asynchronous by design
Midjourney V8.1 processes tasks asynchronously. The submit call returns immediately; use the query endpoint to track progress and retrieve the final images.
Related AI Image Models on AIReiter
GPT-Image 2
A strong general-purpose image model with 1K to 4K output, custom pixel sizes, and up to 10 reference images for editing. Choose it when you need image-to-image or multi-reference composition.
Nano Banana Pro
A Google image model with 1K, 2K, and 4K tiers and broad aspect-ratio support. Choose it when you want reference-guided generation and editing with fast iteration.
Seedream 5.0 Pro
A ByteDance image model with 1K and 2K output and up to 10 reference images for high-precision generation and editing. Choose it for detailed multi-reference workflows.
Midjourney V8.1 FAQ
Answers about generation, quality tiers, pricing, tools, and API usage.
/ 01Is there a Midjourney API?
Yes. AIReiter provides a Midjourney V8.1 API that lets you generate images programmatically. Send a prompt with native Midjourney parameters (--ar, --s, --sref, etc.) via POST /api/openapi/submit, then poll POST /api/openapi/query with the same out_task_id until the task completes. You get up to 4 images per request and pay per request, not per image.
/ 02What is Midjourney V8.1?
Midjourney V8.1 is the latest image generation model from the Midjourney series. It delivers refined aesthetics, stronger prompt adherence, and improved text rendering. Each Generate request returns up to 4 images, and the model supports native Midjourney parameters like --ar, --s, --chaos, --seed, and --sref.
/ 03What is the difference between V8.1 and V7?
V8.1 introduces a quality parameter (Standard/HD) with HD applying a 1.5x price multiplier for higher-fidelity output. V7 has Draft, Fast, and Turbo speed tiers but no quality tier. V8.1 has Draft and Fast speeds only. V8.1 also improves aesthetics, prompt adherence, and text rendering over V7.
/ 04Can I use native Midjourney syntax?
Yes. Pass Midjourney parameters directly in the prompt text: --ar for aspect ratio, --s for stylize, --chaos for variation, --seed for reproducibility, --sref for style references, --oref for image references, --iw for image weight, and --no for negative prompts. No translation layer is needed.
/ 05What are the speed and quality options?
Speed: Draft (lower cost, faster) or Fast (standard). Quality: Standard or HD. HD costs 1.5x the base price and is only available with Fast speed. Draft is Standard quality only.
/ 06How is Midjourney V8.1 priced?
Generate costs 9.75 credits per request for Draft or Fast Standard, and 14.625 credits for Fast HD. Retexture costs 14.625 credits per request. Remove Background costs 9.75 credits per request. Each request returns up to 4 images. Failed tasks are not charged.
/ 07What is Retexture?
Retexture regenerates an uploaded image with a new visual style or texture while preserving the original composition. Upload one image and describe the desired transformation. It costs 14.625 credits per request and returns up to 4 images.
/ 08What is Remove Background?
Remove Background erases the background from an image, producing a clean subject cutout. Upload one image - no prompt needed. It costs 9.75 credits per request and returns a single processed image.
/ 09Which API model IDs should I use?
Use mj_v8_1 for Generate, mj_v8_1_retexture for Retexture, and mj_v8_1_remove_bg for Remove Background. Submit via POST /api/openapi/submit, then poll POST /api/openapi/query with the same out_task_id until completed or failed.