CAST · AI Prompt Builder: Professional AI Prompts for Freepik, Midjourney & More

6.7.2026 · 1 min · Esther Jaggy Aebi

Home page of CAST - AI Prompt Builder

Writing AI prompts is an art, but it doesn't have to take hours. With CAST, the AI Prompt Builder by ej.AI.minds, you create professional prompts for the most popular AI image tools in seconds. Developed for creatives, freelancers and SMEs, in Switzerland and worldwide.

What is CAST?

CAST is a browser-based AI tool that helps you create structured and effective prompts, with no prior knowledge and no effort. You choose your tool, enter your idea, and CAST turns it into a finished, optimised prompt, ready to copy.

Which AI tools does CAST work with?

CAST supports all the major AI image and video tools:

• Freepik AI / Magnific AI
• Midjourney, incl. --ar, --v, --stylize parameters
• Runway Gen-3 (video)
• ChatGPT / DALL-E
• Google Gemini / Nano Banana
• Magnific AI (upscaling)
• Higgsfield AI (video)

An eye reimagined, created with CAST - AI Prompt Builder

Why CAST, and not just write it yourself?

A good prompt needs structure: subject, style, lighting, camera angle, mood, aspect ratio. CAST knows all these parameters and combines them automatically, tailored to each tool and in the right order. The result: better images, less frustration, more creativity.

CAST in practice: this is how easy it is

1. Choose your AI tool (e.g. Magnific/Freepik, Midjourney …)
2. Choose subject, style, mood and settings
3. Generate your prompt, ready in seconds
4. Copy it and use it directly in your AI tool
5. All prompts are saved, so you can come back to them anytime

Pricing: fair and transparent

CAST is available as a monthly subscription: CHF 19.00 per month, cancel anytime. No annual contract, no hidden costs. Developed and run in Switzerland.

Try CAST now

Start today at cast.ejaiminds.com and see how quickly and easily good AI prompts come together.

Woman lost in thought, created with CAST - AI Prompt Builder

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