How to Write AI Image Prompts for Midjourney and DALL-E: The 2026 Prompt Format Guide

The same creative idea can produce a stunning image in Midjourney and a generic mess in DALL-E — or the other way around. The reason is almost never the tool's quality. It's the prompt format. Each AI image generator reads and processes your instructions differently, and writing for one as if it were the other is the single most expensive mistake beginners make in 2026.

This guide breaks down exactly how to write AI image prompts for Midjourney and DALL-E — the platform-specific formats, the 6-part prompt formula that works across both, and the real-world techniques that separate generic output from portfolio-ready results.

Why Midjourney and DALL-E Need Different Prompt Formats

Before diving into the formula, it helps to understand why format matters so much. Midjourney and DALL-E were trained on different datasets and optimized for different output styles. Those differences show up in how they interpret your words.

Midjourney excels at artistic, stylized, and aesthetic imagery. It responds strongly to visual art descriptors, artistic movement names, mood keywords, and photography terms. Its prompt parser treats everything between your words as weighted attention — order matters, and shorter phrases tend to land with more precision.

DALL-E 3 (available through ChatGPT and OpenAI's API) was trained with a stronger emphasis on following detailed natural-language descriptions. It handles complex compositional instructions better than Midjourney and produces more literal interpretations of your words. DALL-E also handles text rendering inside images significantly better.

Using the wrong format for the wrong tool is like handing a recipe written in French to a chef who only reads Mandarin. The ingredients are the same. The result is not.

The 6-Part AI Image Prompt Formula

Regardless of which generator you use, every strong image prompt answers six questions. Fill in each part, then adapt the format for your target platform (covered in the next section).

1. Subject — What Is in the Image?

Name your primary subject with specific visual details. Instead of "a woman," say "a woman in her 60s with silver hair and reading glasses." Specificity narrows the model's attention to what you actually want.

2. Action — What Is the Subject Doing?

Static subjects are boring. Add a verb. "Standing by a window" beats "by a window." "Reaching for a coffee mug" beats "holding coffee." Even landscapes benefit from implied action — "a fog rolling over a mountain valley" is more dynamic than "a mountain valley."

3. Environment — Where Is This?

Setting and background tell the story. "A cozy café in Paris at golden hour" vs. "a Starbucks" is a meaningful difference. Be intentional about whether the environment should be busy or minimal, natural or built.

4. Style — What Artistic Direction?

This is where Midjourney and DALL-E diverge most. For Midjourney, list style keywords: "oil painting," "film photography," "art nouveau illustration," "cinematic still." For DALL-E, describe the style in natural language: "painted in the style of a 19th-century oil portrait." Both are powerful; the format changes.

5. Lighting — How Is the Scene Lit?

Lighting defines mood. Common options: "soft natural light," "dramatic rim lighting," "golden hour," "overcast and moody," "neon reflections on wet pavement." For Midjourney, a single lighting keyword often suffices. For DALL-E, weave it into the descriptive sentence.

6. Technical Parameters — Camera, Angle, and Format

Lens choice, aspect ratio, and rendering style give you control over composition. For Midjourney, these are often flag parameters (--ar 16:9, --style raw). For DALL-E, describe them in prose: "shot on a 35mm film camera with a wide-angle lens."

Prompt Format by Platform

The table below summarizes how to adapt the 6-part formula for each major AI image generator in 2026.

Generator	Best Prompt Format	Ideal Length	Top Tip
Midjourney	Comma-separated keyword phrases	20-40 words	Lead with subject and style; add --ar and --stylize parameters
DALL-E 3	Full descriptive sentences (prose)	40-60 words	Write as if describing the image to someone who cannot see it
Stable Diffusion	Weighted keyword lists in parentheses	10-30 words	Use (keyword) for higher weight and [keyword] for lower weight
Ideogram	Mixed keyword + sentence	20-40 words	Best for typography and text rendering inside images

Midjourney Prompt Format in Practice

Midjourney rewards brevity and keyword density. The model was trained on image-caption pairs from the web, so it "thinks" in visual descriptors rather than grammatically complete sentences.

Notice what this prompt does:

• Subject: a samurai warrior at a mountain pass
• Environment: misty, at dawn, heavy snow
• Style: Japanese woodblock print (ukiyo-e)
• Lighting/mood: dramatic contrast
• Technical: 35mm film photography, cinematic composition, aspect ratio, stylize flag

Midjourney also supports image prompts — you can paste a reference image URL at the start of your prompt and use the --iw parameter (0.5 to 2) to control how much the image influences the output vs. your text.

DALL-E 3 Prompt Format in Practice

DALL-E 3 prefers natural-language descriptions that read like photo captions or museum labels. Think in complete thoughts, not keyword lists.

Same creative brief. Entirely different phrasing. DALL-E will interpret "stands at a misty mountain pass in the early dawn" more literally than Midjourney would — which is exactly what you want when you need precise compositional control.

5 Common AI Image Prompt Mistakes (and How to Fix Them)

1. Being Too Vague About the Subject

"A beautiful landscape" could produce anything from a tropical beach to an arctic tundra. Instead: "a windswept coastline in Iceland at blue hour, volcanic rock formations, crashing waves, moss-covered cliffs." The model cannot invent what you do not give it.

2. Skipping the Medium or Style

AI image generators will pick a default interpretation if you do not specify. If you want a painting, say "oil painting" or "watercolor illustration." If you want a photograph, say "shot on Kodak Portra 400." Without this, Midjourney defaults to its own aesthetic which may not match your vision.

3. Using Midjourney Prompts in DALL-E (and Vice Versa)

The comma-separated style that crushes it in Midjourney often produces flat or confused results in DALL-E. Before copying a prompt from one platform to another, rewrite it in the target format. This is one of the highest-ROI changes you can make in your image generation workflow.

4. Overcrowding the Prompt with Competing Subjects

Each additional element dilutes the model's attention. One clear subject with a secondary element produces stronger results than a scene with five equally-weighted objects. Use the prompt length as a natural constraint — if you are at 80 words, start cutting.

5. Ignoring Negative Prompting

Midjourney supports --no parameters to exclude elements ("--no text, watermark, blurry"). DALL-E does not have a direct equivalent, but you can include negative phrasing in your description: "a clean book cover with no text overlay." Stable Diffusion has the most robust negative prompting system with dedicated negative prompt fields.

How Prompt Helper Gemini Fits Into Your Image Prompt Workflow

Prompt Helper Gemini is a free Chrome extension that enhances prompts for ChatGPT, Gemini, Claude, Grok, and Perplexity — including their image generation modes. While it does not run directly inside Midjourney (which uses Discord) or the DALL-E interface, it is a powerful tool for refining your image prompts before pasting them into either platform.

Here is how to use it in your workflow:

• Use the Build tab with Image mode to paste your rough idea and get an enhanced, detailed prompt
• Select your desired style (detailed, concise, artistic, photorealistic) to match your target generator
• Copy the refined output and format it for Midjourney or DALL-E as described above
• The keyboard shortcut Ctrl+Shift+E (Windows) or Cmd+Shift+E (Mac) lets you improve prompts without leaving your browser tab

The free tier gives you 5 prompt enhancements per week — enough to refine your most important images. The Pro tier unlocks unlimited enhancements and full prompt history.

Reference: Quick Cheat Sheet by Generator

Midjourney:

• Format: keyword phrases separated by commas
• Length: 20-40 words
• Style keywords work better than full sentences
• Use --ar, --stylize, --v, --no parameters
• Reference images via image URL + --iw flag

DALL-E 3:

• Format: full descriptive sentences (40-60 words)
• Write as you would describe the image to someone who cannot see it
• Best for: complex compositions, photorealism, text rendering
• Specify camera/medium in natural language
• No parameter flags — describe everything in prose

Stable Diffusion:

• Format: weighted keyword lists with parentheses
• Length: 10-30 words
• (keyword) = higher weight, [keyword] = lower weight
• Use negative prompt field to exclude unwanted elements
• CFG scale controls how strictly the model follows your prompt

The Bottom Line

Writing effective AI image prompts is not about using more words — it is about using the right kind of words in the right format for your target generator. Midjourney rewards artistic shorthand and keyword density. DALL-E rewards natural-language descriptions that read like vivid captions. Stable Diffusion rewards weighted keyword precision.

Master the 6-part formula, adapt it to each platform's preferred format, and your hit rate on strong images will climb dramatically. And when you need a quick enhancement for prompts going into ChatGPT or Gemini's image modes, Prompt Helper Gemini handles the refinement in one click.