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Since Friday (May 15, 2026), I have been building a local AI chat app of my own with the help of generative AI🚀 The main reason is to use Gemma 4 on my laptop in an environment where I can expect what will happen. In addition, this project has been helping me learn a lot about how vibecoding tools work under the hood!
This chat app is built under the following setup:
• Next.js
• Two API Routes, separating LLM inference from the back-end part of the app
• Transformers.js (running on the server side)
• The ONNX q4 version of gemma-4-e2b-it
Note that this chat app is still in development and, despite its name, has not got any built-in tools yet. However, a first step is very important in app building, isn't it? I hope that this post inspires anyone to build their own local AI chat app!
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Here is a post on X where I shared this AI chat app building project!
https://x.com/_shun0t/status/2055662929782174141
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Hey there! Can you share the public link to this project?
You can do this by changing the General Access setting on your Melius project from 'Restricted' to 'Anyone with the link.'
17 months ago, we launched an AI chatbot for a small business client.
Here's an honest update.
Two months in, the numbers were modest.
80 conversations. 708 messages. 14% conversation-to-lead rate.
Not bad. But most visitors still preferred the contact form.
So we left it running.
We watched how people used it and made improvements. Nothing major.
17 months later:
1,350 conversations. 179 leads. 13.2% conversion rate.
At 16x the volume, the quality held almost exactly.
But there was a real shift around July 2025 that’s worth pointing out.
1. Average chats per month doubled, from 40 to 79.
A clear sign that where conversations are taking place is changing. People are no longer browsing sites in the same way.
They want their questions answered fast, and if you can’t deliver that, you miss out.
2. The chatbot became the #1 lead source on the site
From July 2025 onwards, the chatbot has consistently driven more leads than the forms, and that's held through 2026.
3. The average conversation runs 9 messages deep.
These are not quick FAQ lookups.
Some conversations span materials, pricing, customisation, planning permission and delivery.
These are real pre-sales conversations handled without a team member in the room.
PS: Only 3 thumbs down in 17 months. We'll take that.
Good work. Yeah as the industry shifts customer behavior does so as well
Starting point of a recent build 👋
This was for a B2B marketing agency in Berlin. The project included 6 pages with CMS structure and light animations.
I always begin like this. No styling, no colors, just layout, spacing and hierarchy in grayscale.
If the structure does not work on its own, the design will not fix it later.
Here is a related project for context
Marketing Agency Website Design Case Study
This early phase is usually where most of the real decisions are made.
Will share more breakdowns like this.
Great work!
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