# I Built an AI Router That Decomposes Your Prompt and Dispatches to the Best Model

> Source: <https://dev.to/moozechen/i-built-an-ai-router-that-decomposes-your-prompt-and-dispatches-to-the-best-model-agc>
> Published: 2026-07-31 04:11:26+00:00

When you call an LLM API, you pick a model and hope it's the right one. Claude for reasoning, GPT for code, Gemini for long context... you're doing the routing manually.

I got tired of this, so I built **Flint** — a smart routing engine that does the model selection for you.

Instead of forwarding your prompt to a single model, Flint:

```
You: "Compare Python and Go for an API gateway"
         ↓
   [Decompose]
    /         Research    Analysis
(qwen3.7)   (deepseek)
    \         /
   [Synthesize]
         ↓
   Structured comparison with performance data
```

Here's what Flint produced for "Compare Python and Go for building an API gateway":

**1. Performance** — Go compiles to native code, handles tens of thousands of concurrent connections. Python's GIL limits throughput even with async frameworks.

**2. Concurrency** — Go's goroutines (~4KB stack) outperform Python's asyncio by an order of magnitude for I/O-heavy workloads.

**3. Ecosystem** — Go dominates the gateway space (Traefik, Caddy, Kong plugins). Python has frameworks but lacks dedicated gateway projects.

The research subtask fetched actual benchmark data, the analysis subtask structured the comparison, and the synthesizer wove it together. One prompt, multiple models, one answer.

`base_url`

and keep your existing codeThere's a [live demo](https://flintapi.ai/demo) — no signup needed. Type any question and see Flint's routing vs. a direct model call side by side.

`pip install openai`

+ set `base_url="https://flintapi.ai/v1"`

Open to feedback — what would you want a smart router to do that it doesn't do yet?