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#04 Robin: Gemini 3 Pro + n8n: The "Brain" Your Automation Needs (But Keep It Away From Tools)
Published 2 months, 2 weeks ago
Description
Gemini 3 Pro changes the game for automation, but if you treat it like GPT-4, you’re going to have a bad time. We found out the hard way that while this model is a reasoning beast, it absolutely falls apart when you ask it to execute actions.
We’ll talk about:
- Why Gemini 3 Pro is the "Architect" your workflows need, not the "Builder"
- How to shove 100+ page PDFs into a single prompt (and why you might not need a vector database anymore)
- The "Thinking Level" setting n8n hides from you—and how to hack it using HTTP nodes
- Why tool-calling breaks thinking signatures (and the exact error to watch for)
- A cost-saving strategy: When to downgrade to Gemini 2.5 Flash
Keywords:
Gemini 3 Pro, n8n automation, AI workflows, context window, RAG alternatives, AI agents, prompt engineering, Google DeepMind, low-code tools, workflow optimization, API integration, AI cost management
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