# Dynamic AI model selector with Requesty and Google Sheets: n8n workflow

> Started by someone opening a chat with it, and works across Google Sheets. It hands the judgement calls to OpenAI.

Source: https://millionrounds.com/workflow/dynamic-ai-model-selector-with-requesty-and-google-sheets (Millionrounds; every figure on the page links to its filing or article)

[Automation library](https://millionrounds.com/workflows) · [Data collection](https://millionrounds.com/workflows?category=Data+collection#library)

# Dynamic AI model selector with Requesty and Google Sheets

Started by someone opening a chat with it, and works across Google Sheets. It hands the judgement calls to OpenAI. 20 steps: a working afternoon to understand properly.

Medium Calls a model: OpenAI

[Download free](https://millionrounds.com/login?next=%2Fapp%2Fworkflow%2Fdynamic-ai-model-selector-with-requesty-and-google-sheets)

**20 steps** Medium: a working afternoon

**0** Branches: places the flow splits

**0** Loops or waits

**1** Service it connects to

## The flow

Starts it 3 Model 2 Logic 8 Service 7

The steps in the order they run, from what starts it.

- 1 **Initialize Workflow** Manual trigger *Starts it*
- 2 **Model Selection Form** Form trigger *Starts it*
- 3 **Chat Interface** Chat trigger *Starts it*
- 4 **OpenAI Chat Model** Lm Chat Open Ai *Model*
- 5 **Get Current Workflow** N8n *Service*
- 6 **Fetch Available Models** Http Request *Service*
- 7 **Set Selected Model** Set *Logic*
- 8 **Read Current Model** Google Sheets *Service*
- 9 **AI Agent (Optional)** Agent *Model*
- 10 **Merge Data** Merge *Logic*
- 11 **Split Model Data** Split Out *Logic*
- 12 **Clear Previous Selection** Google Sheets *Service*
- 13 **Get Current Model** Set *Logic*
- 14 **Update Dropdown Options** Code *Logic*
- 15 **Extract Model IDs** Set *Logic*
- 16 **Save Model Selection** Google Sheets *Service*
- 17 **AI API Request** Http Request *Service*
- 18 **Update Workflow** N8n *Service*
- 19 **Extract Response** Set *Logic*
- 20 **Format Response** Code *Logic*

## How it's built

- **Starts on:** Someone opening a chat with it
- **Steps:** 20
- **Size:** Medium: a working afternoon
- **Connects to:** Google Sheets
- **Model:** OpenAI

## Questions

What does it need to run?

An n8n account, plus your own Google Sheets account, and a key for OpenAI. You connect your own accounts after importing it; none are included.

What starts it?

It starts on someone opening a chat with it.

Does it use AI?

Yes. It calls OpenAI. Model calls are billed by the provider, not by n8n.

How long does it take to set up?

Plan an afternoon. 20 steps is enough that you should read each one before running it.

How do I import it?

Copy the workflow, open a new workflow in n8n and paste. The steps appear on the canvas, ready for your own accounts.

**Before you run it**

Nothing here has been tested by us. It is somebody's working automation, read and described from its own steps. Treat the connections it wants as a list of accounts it will touch, and read the 20 steps before you point it at anything that matters.

## Run it in n8n

- **Create your n8n account** Free to start. n8n is where the workflow runs. [Create an n8n account ↗](https://millionrounds.com/n8n)
- **Download the workflow** Free with a Millionrounds account. [Download free](https://millionrounds.com/login?next=%2Fapp%2Fworkflow%2Fdynamic-ai-model-selector-with-requesty-and-google-sheets)
- **Paste it into n8n** Open a new workflow in n8n and paste. Then connect your own accounts.

Stored with the author's traces removed: canvas notes, instance identifiers, saved credential names and any live document they had left behind.

## Connects to

Each opens the other workflows that use it.

[Google Sheets](https://millionrounds.com/workflows?service=Google+Sheets#library)

## Workflows like it

Also data collection, with the same services where possible, closest in size first.

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- [**Draft daily crypto news tweets with CryptoPanic and Google** 20 steps · calls a model · Gmail, Google Sheets](https://millionrounds.com/workflow/draft-daily-crypto-news-tweets-with-cryptopanic-and-google)
- [**Extract portfolio project credits from web pages with OpenAI** 20 steps · calls a model · Google Sheets](https://millionrounds.com/workflow/extract-portfolio-project-credits-from-web-pages-with-openai)
- [**Forecast property CAPEX and ROI weekly with Google Sheets** 20 steps · calls a model · Google Sheets](https://millionrounds.com/workflow/forecast-property-capex-and-roi-weekly-with-google-sheets)
- [**Generate personalized financial plans with Gemini and Sheets** 20 steps · calls a model · Gmail, Google Drive](https://millionrounds.com/workflow/generate-personalized-financial-plans-with-gemini-and-sheets)