OpenAI is usually the better pick for API image generation costs. It has clear per-image pricing. It is built for developers. Midjourney is great for style and polish, but its API story is messy because there is no simple official public API plan like OpenAI’s image API. So the cheapest option depends on one boring question: are you making images by hand, or through software?
TLDR: If you need an image API for an app, OpenAI is easier to price and plug in. For example, 500 standard DALL·E 3 images at $0.04 each would cost about $20. Midjourney’s $30 Standard plan can be better for manual creative work, especially with relaxed generation, but it is not a clean API product. If your team spends 3 hours per month fighting setup, that “cheap” option may not feel cheap at all.
The short version
OpenAI charges like a vending machine. Put in a prompt. Pay for an image. Done.
Midjourney charges more like a gym membership. You pay monthly. You get a bundle of fast GPU time. Some plans include relaxed modes. You can make a lot if you use it well.
That sounds nice. But here is the annoying bit. Midjourney does not offer a simple official public API like OpenAI does. So when people say “Midjourney API pricing,” they often mean one of three things:
- A normal Midjourney subscription used through Discord or the web app.
- A third-party wrapper that connects to Midjourney somehow.
- A private or internal setup that may be fragile.
Honestly, it feels like buying a sports car and then realizing the keys are hidden in a Discord channel.
OpenAI image pricing is easier to understand
OpenAI prices image generation by output. You pay per image. The exact price depends on the model, quality, and size.
For DALL·E 3, common public pricing has been:
- 1024 x 1024 standard: about $0.04 per image.
- 1024 x 1024 HD: about $0.08 per image.
- larger wide or tall HD image: about $0.12 per image.
DALL·E 2 has been cheaper, but it is older. It can still be useful for simple tasks. Think icons, rough concepts, or quick background ideas.
This pricing is nice for planning. If your app makes 1,000 images, you can estimate the bill. If users make 10,000 images, you can estimate that too. There are no mental gymnastics over “GPU minutes” at 11:48 p.m.
Midjourney pricing is more like a creative subscription
Midjourney plans have often looked like this:
- Basic: about $10 per month.
- Standard: about $30 per month.
- Pro: about $60 per month.
- Mega: about $120 per month.
Annual billing usually lowers the monthly average. Plans include different amounts of fast GPU time. Higher plans add more comfort, more jobs, and privacy features.
Midjourney also has relaxed generation on some plans. This means your job may wait in line, but it does not burn fast time in the same way. For heavy human use, that can be a big deal.
Here is a simple estimate. Suppose a prompt creates a grid of 4 images and uses about 1 minute of fast GPU time. A Standard plan with around 15 fast GPU hours gives about 900 such prompts. That is 3,600 first-pass images. At $30, that looks like less than 1 cent per image.
Sounds amazing, right?
The catch is that real work is not that tidy. You upscale. You reroll. You test weird prompts. You ask for “more cinematic” seven times. Suddenly your beautiful math is wearing clown shoes.
API use changes the cost math
If you are making images for yourself, Midjourney can be great value. If you are building a product, OpenAI looks better fast.
Why? Because APIs need boring things. Boring is good here.
- Stable endpoints.
- Clear usage billing.
- Rate limits you can plan around.
- Error messages that make sense.
- Terms that fit software use.
OpenAI gives you that structure. You send a request. You get an image. You track cost in your dashboard.
Midjourney is different. Without a public official API, you may need a third-party service. That service may charge more than the basic Midjourney plan. Some charge per generation. Some charge monthly. Some add queues. Some break when Midjourney changes things.
Expect to waste time on small failures. A job may take 20 seconds longer than usual. A queue may freeze. A prompt may return in a format your app was not ready for. None of this is fun when a customer is staring at a loading spinner.
Simple cost examples
Let’s use round numbers. These are not promises. Always check current pricing before buying. But the examples help.
Example 1: Marketing team
A small team needs 300 images per month for blog banners, ads, and social posts.
- OpenAI: 300 x $0.04 = about $12.
- Midjourney: Basic at $10 may work, but manual steps may slow the team.
Winner: Midjourney for style testing. OpenAI for simple repeatable workflows.
Example 2: SaaS app
An app lets users create avatars. It needs 5,000 images per month.
- OpenAI: 5,000 x $0.04 = about $200.
- Midjourney: subscription math may look cheaper, but API access is the problem.
Winner: OpenAI. The clean API saves headaches.
Example 3: Artist or creator
A creator needs lots of mood boards and concept art. Speed is nice, but not always required.
- OpenAI: paying per image can add up.
- Midjourney: Standard or Pro can be strong value, especially with relaxed mode.
Winner: Midjourney, if manual work is fine.
Quality matters too
Cost is not the whole story. A cheap bad image is still bad.
Midjourney often wins on rich style, dramatic lighting, texture, and “wow” factor. It is popular for fantasy art, fashion ideas, posters, game concepts, and brand mood boards.
OpenAI is strong when you need an app-friendly process. It is also good for prompt control, editing flows, and product features that need consistency.
If your goal is the prettiest single image, Midjourney may win. If your goal is 50,000 images flowing through an app with less drama, OpenAI is the safer bet.
Hidden costs people forget
Here is where budgets get sneaky.
- Human time: Manual copying and downloading costs money.
- Failed generations: Bad prompts still cost time or credits.
- Upscaling: Better images may use more resources.
- Storage: Generated images need hosting.
- Moderation: User prompts can get weird fast.
- Engineering time: A shaky setup can eat a sprint.
This is why the cheapest image price can lose. If OpenAI costs $40 more per month but saves 6 developer hours, it is probably cheaper in real life.
So which one should you choose?
Pick OpenAI if you need:
- An official API.
- Predictable image costs.
- Easy usage tracking.
- Software integration.
- Less operational stress.
Pick Midjourney if you need:
- Beautiful artistic outputs.
- Mood boards and concept art.
- Manual creative exploration.
- High visual polish.
- Subscription value for heavy personal use.
Final call: For API pricing, OpenAI wins on clarity. Midjourney wins on visual flair, but its API path is not clean. If you are building a business feature, start with OpenAI. If you are making stunning concepts and can work by hand, Midjourney is still a joy, even if the pricing math gets a little slippery.