# Evaluation metric: summarization with Gemini and OpenAI: n8n workflow

> Started by another system calling it, and works across Google Drive. It hands the judgement calls to Gemini and OpenAI.

Source: https://millionrounds.com/workflow/evaluation-metric-summarization-with-gemini-and-openai (Millionrounds; every figure on the page links to its filing or article)

[Automation library](https://millionrounds.com/workflows) · [Research and reporting](https://millionrounds.com/workflows?category=Research+and+reporting#library)

# Evaluation metric: summarization with Gemini and OpenAI

Started by another system calling it, and works across Google Drive. It hands the judgement calls to Gemini and OpenAI. 14 steps: a working afternoon to understand properly.

Medium Calls a model: Gemini, OpenAI

[Download free](https://millionrounds.com/login?next=%2Fapp%2Fworkflow%2Fevaluation-metric-summarization-with-gemini-and-openai)

**14 steps** Medium: a working afternoon

**0** Branches: places the flow splits

**0** Loops or waits

**1** Service it connects to

## The flow

Starts it 2 Model 5 Logic 2 Service 5

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

- 1 **OpenAI Chat Model** Lm Chat Open Ai *Model*
- 2 **When fetching a dataset row** Evaluation trigger *Starts it*
- 3 **LLM** Lm Chat Google Gemini *Model*
- 4 **Output** Output Parser Structured *Model*
- 5 **Webhook** Webhook *Starts it*
- 6 **Summarise Agent** Chain Llm *Model*
- 7 **Download Transcript** Google Drive *Service*
- 8 **Evaluate Summarisation** Chain Llm *Model*
- 9 **Get Gdrive URL** Set *Logic*
- 10 **Is Evaluating?** Evaluation *Service*
- 11 **Extract from File** Extract From File *Service*
- 12 **Set Outputs** Evaluation *Service*
- 13 **Respond to User** No Op *Logic*
- 14 **Set Metrics** Evaluation *Service*

## How it's built

- **Starts on:** Another system calling it
- **Steps:** 14
- **Size:** Medium: a working afternoon
- **Connects to:** Google Drive
- **Model:** Gemini, OpenAI

## Questions

What does it need to run?

An n8n account, plus your own Google Drive account, and a key for Gemini and OpenAI. 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 Gemini and OpenAI. Model calls are billed by the provider, not by n8n.

How long does it take to set up?

Plan an afternoon. 14 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 14 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%2Fevaluation-metric-summarization-with-gemini-and-openai)
- **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 Drive](https://millionrounds.com/workflows?service=Google+Drive#library)

## Workflows like it

Also research and reporting, with the same services where possible, closest in size first.

- [**AI crew to automate fundamental stock analysis - Q&A workflow** 14 steps · calls a model · Google Drive, Qdrant](https://millionrounds.com/workflow/ai-crew-to-automate-fundamental-stock-analysis-q-and-a-workf)
- [**Create free Slack Pro alternative with Google Drive** 14 steps · calls a model · Google Drive, Slack](https://millionrounds.com/workflow/create-free-slack-pro-alternative-with-google-drive)
- [**Daily WhatsApp group summarizer – GPT-4o, Google Sheets** 14 steps · calls a model · Google Drive, Google Sheets](https://millionrounds.com/workflow/daily-whatsapp-group-summarizer-gpt-4o-google-sheets)
- [**Translate lab report PDFs for patients with Google Drive** 14 steps · calls a model · Gmail, Google Drive](https://millionrounds.com/workflow/translate-lab-report-pdfs-for-patients-with-google-drive)
- [**AI-Powered Jira Bug Reporting with Gmail and Google Drive** 14 steps · Gmail, Google Drive](https://millionrounds.com/workflow/ai-powered-jira-bug-reporting-with-gmail-and-google-drive)
- [**Automate image compression in Google Drive with Tinify API** 14 steps · Gmail, Google Drive](https://millionrounds.com/workflow/automate-image-compression-in-google-drive-with-tinify-api)