Free tool

Architectural AI Prompt Generator

Pick the project type, space, style, lighting, perspective and materials. We assemble a copy-ready prompt for Midjourney, Syntina and ChatGPT Image, plus a one-line brief summary for your team.

Prompt inputs
Primary materials
Generated prompt

Positive prompt

interior architectural visualization, of a contemporary living room, modern minimalist design, clean lines, eye-level perspective, natural human viewpoint, golden hour sunlight, warm highlights, featuring oak wood, polished concrete, floor-to-ceiling glass, warm inviting atmosphere, presentation-grade detail, photoreal

Negative prompt

distorted geometry, warped perspective, incorrect scale, extra objects, low quality, blurry, watermark, text, oversaturated colors, plastic materials

Brief summary

Interior — Living room · Style: Modern minimalist · Lighting: Golden hour · Perspective: Eye level · Materials: Oak / wood, Concrete, Glass · Mood: Warm · Detail: Presentation (medium)

The prompt works in Midjourney, Syntina, ChatGPT Image and similar models. For architectural prompts, change the perspective and lighting combination to produce many variations of the same scene.

Why this tool

A prompt is a set of architectural decisions

An AI render is rarely better than its prompt. The most common failure on architectural projects is writing the prompt freehand and skipping a critical variable, so the model decides the material, the light or the camera for you. The form settles project type, space, style, lighting, perspective and materials up front, which is what lets you build a consistent chain of variations instead of one-off images.

Use the brief summary for internal alignment and the English prompt for the model. The same form gives the whole presentation set one language. If you want to understand why each field matters, the prompt-writing guide shows real outputs for weak and strong prompts.

Workflow

  1. 1Pick the project type and the space so scale and function are settled first.
  2. 2Add a style and a mood to get close to the client's reference images.
  3. 3Change lighting and perspective to plan a set of 6 to 8 variations.
  4. 4Keep the two or three primary materials fixed across the set; surface consistency is what a client notices.
  5. 5Copy the prompt, then add model-specific parameters (aspect ratio, seed) in your tool.

FAQ

About writing prompts

Why does the tool add a negative prompt?
The three most common failures in architectural images are distorted geometry, wrong scale and plastic-looking materials. The default negative prompt targets those three. If your model ignores negative prompts (most current diffusion-transformer models do), simply drop that part after copying.
Which models does the generated prompt work with?
Midjourney, Syntina (Nano Banana Pro, GPT-Image-2), Stable Diffusion XL, Flux and DALL-E 3. Model-specific syntax such as Midjourney's --ar 16:9 or --v 7 is added by you after copying; the prompt itself is plain descriptive English.
How many variations should I generate from one scene?
For a presentation, at least 3 perspectives × 2 lighting conditions is a healthy minimum. Change only the perspective and lighting fields in the form and keep everything else fixed; that gives you a consistent 6-image set instead of six unrelated images.
What makes an architectural prompt work?
Four decisions carry most of the result: (1) building type and scale, (2) the functional identity of the space, (3) the time of day for the light, (4) the two or three primary materials. Style and mood stabilise the result once those four are explicit. The form is built around exactly those decisions.
Is it free?
Yes. The generator runs in your browser, there is no sign-up and no limit. A Syntina account is only needed if you want to generate images from the prompt inside Syntina.

The faster route

Start from an image instead of a prompt

In Syntina you upload a sketch, a viewport screenshot or a reference photo and get an architectural image in seconds. The generator gives you a starting text; Syntina enriches the prompt and builds the variations for you.