plano/demos/use_cases/chatgpt-preference-model-selector

🗝️ RouteGPT (Beta)

RouteGPT is a dynamic model selector Chrome extension for ChatGPT. It intercepts your prompts, detects the user's intent, and automatically routes requests to the most appropriate model — based on preferences you define. Powered by the lightweight Arch-Router, it makes multi-model usage seamless.

Think of it this way: changing models manually is like shifting gears on your bike every few pedals. RouteGPT automates that for you — so you can focus on the ride, not the mechanics.

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📁 Project Name

Folder: chatgpt-preference-model-selector

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🚀 Features

• 🧠 Preference-based routing (e.g., "code generation" → GPT-4, "travel help" → Gemini)
• 🤖 Local inference using Ollama
• 📙 Chrome extension interface for setting route preferences
• ⚡ Runs with Arch-Router-1.5B.gguf

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📦 Installation

1. Clone and install dependencies

git clone https://github.com/your-org/chatgpt-preference-model-selector.git
cd chatgpt-preference-model-selector
npm install

2. Build the extension

npm install 
npm run build

This will create a build/ directory that contains the unpacked Chrome extension.

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🧠 Set Up Arch-Router in Ollama

Ensure Ollama is installed and running.

Then pull the Arch-Router model:

ollama pull hf.co/katanemo/Arch-Router-1.5B.gguf:Q4_K_M

Or run it directly:

ollama run hf.co/katanemo/Arch-Router-1.5B.gguf:Q4_K_M

🌐 Allow Chrome to Access Ollama

Start Ollama with appropriate network settings:

OLLAMA_ORIGINS=* OLLAMA_HOST=0.0.0.0 ollama serve

This:

• Binds Ollama to 0.0.0.0 for external access
• Sets CORS to allow requests from Chrome

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📩 Load the Extension into Chrome

1. Open chrome://extensions
2. Enable Developer mode (top-right toggle)
3. Click "Load unpacked"
4. Select the build/ folder inside chatgpt-preference-model-selector

Once loaded, RouteGPT will begin intercepting and routing your ChatGPT messages based on the preferences you define.

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⚙️ Configure Routing Preferences

1. In ChatGPT, click the model dropdown.
2. A RouteGPT modal will appear.
3. Define your routing logic using natural language (e.g., brainstorm startup ideas → gpt-4, summarize news articles → claude).
4. Save your preferences. Routing begins immediately.

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💸 Profit

RouteGPT helps you:

• Use expensive models only when needed
• Automatically shift to cheaper, faster, or more capable models based on task type
• Streamline multi-model workflows without extra clicks

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🧪 Troubleshooting

• Make sure Ollama is reachable at http://localhost:11434
• If routing doesn’t seem to trigger, check DevTools console logs for [ModelSelector]
• Reload the extension and refresh the ChatGPT tab after updating preferences

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🧱 Built With

• 🧠 Arch-Router (1.5B)
• 📙 Chrome Extensions API
• 🛠️ Ollama
• ⚛️ React + TypeScript

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📜 License

Apache 2.0 © Katanemo Labs, Inc.