Because a prototype isn't a product. No real data access. No auth. No way to share it safely. Retool surveyed 307 CTOs/CISOs: 93% worry about vibe-coded apps in production. Only 8% call their AI governance "strong." The gap between "look what I made" and "here, use it" is the
@linusekenstam
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AI rapid prototyping leads to UI dead end
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I prototyped this the way everyone builds now: described the app in a paragraph, let AI generate it.
— Linus ✦ Ekenstam (@LinusEkenstam) 17 juin 2026
10 minutes in, I had a working UI.
And that's exactly where most AI-built apps die. pic.twitter.com/S54KVXQ41ZI prototyped this the way everyone builds now: described the app in a paragraph, let AI generate it. 10 minutes in, I had a working UI. And that's exactly where most AI-built apps die.
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Example outputs from Midjourney, NBP, ChatGPT Image 2
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Example outputs,
Midjourney, NBP, ChatGPT Image 2. Full prompts in alt. -
Testing same prompt on 5 models using PromptDeck rewrites
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Same input: "a lighthouse keeper in a storm" First: raw prompt into all 5 models.
Output: PromptDeck's per-model rewrite. We're getting useful tips and explainers per model output. retool -
AI models each speak unique prompt languages
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Every AI model speaks a different language. Midjourney wants keywords + flags. Nano Banana Pro and ChatGPT Image 2 want full sentences. Seedance and Kling Omni want you to direct, not describe. Same idea, 5 dialects. Most people use one prompt for all of them, and wonder why
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One sentence yields 5 AI prompts, app shipped in a day with ReTool
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I typed one sentence.
— Linus ✦ Ekenstam (@LinusEkenstam) 17 juin 2026
I got back 5 production-grade prompts. One each for Midjourney, Nano Banana Pro, ChatGPT Image 2, Seedance 2 and Kling Omni.
Then I shipped the app behind it in a day.
Here's the full build with ReTool 🧵 pic.twitter.com/cxCjbpHU5BI typed one sentence. I got back 5 production-grade prompts. One each for Midjourney, Nano Banana Pro, ChatGPT Image 2, Seedance 2 and Kling Omni. Then I shipped the app behind it in a day. Here's the full build with ReTool
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Singularity begins: US government pulls models, little control ahead
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Looks like US government will have to pull a lot of models at this point. Jokes aside, we’re witnessing the beginning of the singularity. Models are becoming. This clearly demonstrates that we have very little control over what comes next. If a mixture of smaller, cheaper
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Using ChatGPT to make a coloring book drawing photorealistic
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Poppy asked me to make her drawing real. She instantly complained the arms and castle was not purple. ChatGPT 1. Take a photo of coloring book
2. Prompt ”make this photorealistic” 3. Watch your kids amaze and improve their pen and paper skills due to critical thinking -
How to create super exclusive birthday cards with ChatGPT
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create super exclusive birthday cards 1. Open ChatGPT
2. Upload your Photo
3. Paste Prompt (in alt + below) Works well for adults, kids, animals… -
Beard disrupts dubbing models; clean-shaven faces recommended
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*disclaimer with my video, my beard is making it hard for most if not all dubbing models out there, hence some shaking and blurring around my mouth in the dubbed version. Yours should be just fine, if you don't have a large facial beard hiding your mouth.