Automation library · Data collection

Automate LLM testing with OpenAI and Google Sheets

Started by another system calling it, and works across Google Sheets. It hands the judgement calls to OpenRouter. 12 steps: a working afternoon to understand properly.

MediumCalls a model: OpenRouter

12 stepsMedium: a working afternoon
0Branches: places the flow splits
0Loops or waits
1Service it connects to

The flow

Starts it 2Model 3Logic 4Service 3

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

  1. 1Structured Output ParserOutput Parser StructuredModel
  2. 2WebhookWebhookStarts it
  3. 3OpenRouter Chat ModelLm Chat Open RouterModel
  4. 4Manual TriggerManual triggerStarts it
  5. 5Basic LLM ChainChain LlmModel
  6. 6Keep Original DataSetLogic
  7. 7Extract DataSetLogic
  8. 8Get TestsGoogle SheetsService
  9. 9MergeMergeLogic
  10. 10LimitLimitLogic
  11. 11Execute SubworkflowHttp RequestService
  12. 12Update ResultsGoogle SheetsService

How it's built

Starts on
Another system calling it
Steps
12
Size
Medium: a working afternoon
Connects to
Google Sheets
Model
OpenRouter

Questions

What does it need to run?

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

What starts it?

It starts on another system calling it.

Does it use AI?

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

How long does it take to set up?

Plan an afternoon. 12 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 12 steps before you point it at anything that matters.