AI Prompt Generator — Midjourney, Flux & Video Prompts, Free, No Login
AI Prompt Generator
Your prompt will appear here...
Free, no login, no API key — this is deterministic template assembly, not an AI call, so the same selections always produce the same prompt and you can hand-tweak it before use.
What is an AI prompt generator?
An AI prompt generator helps you write the instruction you give an AI image, video or text model. Good prompts are not magic spells — they are structured descriptions: a clear subject, a style, lighting and camera choices for images, or a role, task, tone and format for text. This tool builds those prompts from dropdowns and fields, so you never memorize Midjourney flags or stare at a blank box. It is deterministic template assembly, not an AI call: no login, no API key, no cost, and the same selections always produce the same prompt, which you can hand-tweak before pasting into Midjourney, Flux, ChatGPT, Gemini, Veo or Sora.
Anatomy of a good image prompt
Think in five slots. Subject: what is in the scene, stated plainly ("a lighthouse on a cliff at dawn"). Style: photorealistic, cinematic, anime, oil painting — style words steer the whole look more than any other slot. Lighting: golden hour, neon, studio softbox — lighting decides mood. Camera and lens: 85mm portrait flattens and flatters faces, 35mm wide shows environments, macro reveals texture, drone gives scale. Parameters: aspect ratio and model flags. Fill all five and models have little left to guess; leave slots empty and the model fills them randomly, which is why the same vague prompt gives wildly different images.
Midjourney parameters, explained simply
--ar sets aspect ratio (16:9 wide, 1:1 square, 9:16 vertical). --stylize (0–1000) controls how strongly Midjourney's own aesthetic influences the result — low values follow your words literally, high values look more "Midjourney". --chaos (0–100) controls variation: 0 gives predictable grids, high values give surprising compositions. --no excludes things ("--no text, watermark" is the most useful flag in existence, since models still mangle text). Flux and Stable Diffusion use plain words instead of flags, and video models (Veo, Sora) want motion language — "camera moves slowly left" — which is why this tool changes its suffix per target model.
Text prompts: role, task, tone, format
For ChatGPT and Gemini, the most reliable structure is four parts: a role ("Act as an expert marketing copywriter"), a specific task ("Write a product description for..."), a tone (professional, casual, persuasive) and a format (outline, bullet list, step-by-step). Vague tasks get vague answers — "write about dogs" produces generic text, while a role plus a concrete task plus a format produces something usable. Switch to the Text tab above and the tool assembles exactly this structure. One honest limit: no prompt template fixes a bad task — if you do not know what you want, the model cannot know either.
Common prompt mistakes
First, stuffing contradictory styles ("photorealistic anime oil painting") — models average them into mush; pick one dominant style. Second, over-long prompts: beyond ~60 meaningful words, models start dropping details — put the important subject first, decorations last. Third, negative prompting by description ("a room without windows" often still adds windows) — use --no flags or explicit negative prompts instead. Fourth, changing five things at once between generations — change one element per iteration, or you never learn what worked. Fifth, copying "viral" prompts verbatim: they were tuned for one model version and one seed, and rarely transfer cleanly.
Frequently asked questions
What is an AI prompt generator?
It is a tool that builds structured prompts for AI image, video and text models from your choices — subject, style, lighting, camera and parameters — so you get a copy-ready prompt without memorizing syntax or facing a blank box.
Do I need to pay or use an API key?
No. This generator is deterministic template assembly, not an AI call: it runs entirely in your browser, needs no login and no API key, and costs nothing no matter how many prompts you build.
How do Midjourney prompts differ from Flux prompts?
Midjourney uses flags like --ar, --stylize, --chaos and --no. Flux and Stable Diffusion use plain words instead of flags. This tool changes its output suffix automatically when you switch the target model.
What do --ar, --stylize and --chaos mean?
--ar sets aspect ratio. --stylize (0–1000) sets how strongly Midjourney's own aesthetic influences the image. --chaos (0–100) sets how varied and surprising the compositions are. Low chaos is predictable; high chaos is experimental.
Why do my images ignore parts of my prompt?
Usually because the prompt is too long, contradictory, or puts the important subject last. Models weigh early words most and drop details past roughly 60 meaningful words. Put the subject first, pick one dominant style, and change one element per iteration.
Can I use generated prompts commercially?
Prompts themselves are plain text instructions and generally free to reuse. The images or videos you generate with them are governed by the model provider's terms — check Midjourney, Flux, Veo or Sora's current commercial-use rules for your plan.
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