Sales lead routing with Gemini Sentiment Analysis & Model Evaluation Framework

This n8n template demonstrates how to deploy an AI workflow in production while simultaneously running a robust, data-driven Evaluation Framework to ensure quality and optimize costs.

Use Cases Model Comparison: Quickly A/B test different LLM models (e.g., Gemini 3 Pro vs. Flash Lite) for speed and cost efficiency against your specific task.

Prompt Regression: Ensure that tweaks to your system prompt do not introduce new errors or lower the accuracy of your lead categorization.

Production Safety: Guarantee that test runs never trigger real-world actions like sending emails to a client or sales team.

Requirements A configured Gmail Trigger (or equivalent email trigger).

A Google Gemini account for the LLM models.

An n8n Data Table containing your "Golden Dataset" of test cases and ground truths.

How it Works The workflow contains two distinct, parallel execution paths: