Midjourney vs Stable Diffusion – what are the differences?

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Two iconic generative art platforms, Stable Diffusion and Midjourney. But, what’s the difference? Let’s get straight into it.

Stable Diffusion and Midjourney are part of the new generation of AI art software that uses text prompts for generating images. Otherwise known as text-to-image. Both these AI image generators produce high-quality images with a variety of different add-on options. Midjourney can tweak and fine-tune images to fit a certain parameter based on the user’s needs. It centres around creating a unique ‘artistic’ style and “expanding the imaginative powers of the human species“.
Stable Diffusion capitalises on the positives of low-dimensional data representation. Stable Diffusion is accessible and user-friendly open-source model which can cater to specific needs. 

Both models have a lot of similarities when it comes to seed value, aspect ratio and to a certain degree image customization. But they also differ in many ways in regards to quality and price. 

Let’s break it down.

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Differences between Midjourney and Stable Diffusion

  • Image Quality
  • Price
  • Image Customisation 

Image Quality


Midjourney is a highly efficient software that, at the time of writing, has eight models. It is currently on V5 which has been fine-tuned and developed resulting in realistic and high-resolution images. When used correctly, input prompts can curate often indistinguishable images. Additionally, through the use of the positive and negative prompts users can edit the result of the image to taste. 
The default image size in Midjourney is 1024 x 1024 pixels.

Stable Diffusion 

Stable Diffusion AI art generator, in comparison, generates lower-resolution quality images. As a result of its open-source nature leading to many tweaked and retrained different models, it’s slightly more difficult to judge Stable Diffusion’s performance. However, after tests and comparisons on the most popular Stable Diffusion models, they still don’t compare to the image quality of Midjourney.
This is not to say that Stable Diffusion doesn’t produce artistic images. The software still permits detailed image editing with consideration to user preferences.
Default image size in Stable Diffusion is 512 x 512 pixels. 



To access Midjourney, you must pay a monthly fee. At the end of March this year, Midjourney removed free trials from their software.

Subscription plans:
Basic Plan: Monthly Subscription – $10/ month or Annual Subscription – 96$ ($8 / month)
Standard Plan: Monthly Subscription – $30/ month or Annual Subscription – 288$ ($24 / month)  
Pro Plan: Monthly Subscription – $60/ month or Annual Subscription – 576$ ($48 / month)

Stable Diffusion

Stable Diffusion, on the other hand, offers both a free web version and a paid version. As well as the free web version, users can access a free trial for the paid version where they have 25 credits to spend. As a result of Stable Diffusion being an open-source model there isn’t one fixed price. The models paid subscriptions start from 9$.

Image Customisation


Midjourney offers an intricate set of commands which, though may be more complicated to learn in regards to specific keywords, allow for an extension in the different styles of images. Midjourney is used through Discord. The software also allows users to input images into the command bar to be AI generated with image-to-image software. 
Midjourney supports prompt and negative prompt which is a tool that acts as a content filter to ensure an accurate output image. Midjourney offers four output images. Midjourney, unfortunately, doesn’t support inpainting and outpainting.

Stable Diffusion

Stable Diffusion has a user-friendly interface where the user can insert prompts and negative prompts to develop images. Similarly to Midjourney, Stable Diffusion offer four default images but it is possible to render this to more or less. However, unlike Midjourney, Stable Diffusion allow for inpainting and outpainting. Thus, offering a more in depth selection for image customisation.


Midjourney and Stable Diffusion are two of the most popular AI image generators currently accessible. Another being DALL E2. There are similarities between the two applications such as their text-to-image generative software which uses text prompts to create images unique to the users requests. However, the software differ in terms of their pricing, their quality and in a few ways there customisation.